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<ul id="pagelocation">
<li>id3v2.3.0</li>
</ul>
<div dir="ltr" id="content" lang="en"><span class="anchor" id="top"></span>
<span class="anchor" id="line-3"></span><p class="line867"><span class="anchor" id="top"></span> <span class="anchor" id="line-4"></span>Informal Standard <br>
<span class="anchor" id="line-5"></span>Document: id3v2.3 <br>
<span class="anchor" id="line-6"></span>M. Nilsson<br>
3rd February 1999 <span class="anchor" id="line-7"></span><span class="anchor" id="line-8"></span><span class="anchor" id="line-9"></span></p><p class="line867">
</p><h1 id="head-0b2a9a0361388ae81f2ca83d66eaa02d4ea76d05">1. ID3 tag version 2.3.0</h1>
<span class="anchor" id="line-10"></span><p class="line867"><span class="anchor" id="status"></span> <span class="anchor" id="line-11"></span>
</p><h2 id="head-7d04f74ec3f80b6f8761bb601a3a0be9377162e5">1.1. Status of this document</h2>
<span class="anchor" id="line-12"></span><p class="line862">This document is an informal standard and replaces the <a href="http://www.id3.org/id3v2-00"> id3v2.2.0</a> <span class="anchor" id="line-13"></span>standard.
The informal standard is released so that implementors could have a set
standard before a formal standard is set. The formal standard will use
another version or revision number if not identical to what is
described in this document. The contents in this document may change
for clarifications but never for added or altered functionallity. <span class="anchor" id="line-14"></span><span class="anchor" id="line-15"></span></p><p class="line874">Distribution of this document is unlimited. <span class="anchor" id="line-16"></span><span class="anchor" id="line-17"></span></p><p class="line867"><span class="anchor" id="abstract"></span> <span class="anchor" id="line-18"></span>
</p><h2 id="head-23ac0ee64acc84a9f496e03b940d5701d6ac9e8f">1.2. Abstract</h2>
<span class="anchor" id="line-19"></span><p class="line874">This document describes the ID3v2.3.0 standard, which is a more <span class="anchor" id="line-20"></span>developed version of the ID3v2 informal standard (version [:id3v2-00: <span class="anchor" id="line-21"></span>2.2.0]), evolved from the ID3 tagging system. The ID3v2 offers a flexible way <span class="anchor" id="line-22"></span>of storing information about an audio file within itself to determine <span class="anchor" id="line-23"></span>its origin and contents. The information may be technical information, <span class="anchor" id="line-24"></span>such as equalisation curves, as well as related meta information, such <span class="anchor" id="line-25"></span>as title, performer, copyright etc. <span class="anchor" id="line-26"></span><span class="anchor" id="line-27"></span></p><p class="line867"></p><div class="table-of-contents"><p class="table-of-contents-heading">Contents</p><ol><li><a href="#head-0b2a9a0361388ae81f2ca83d66eaa02d4ea76d05">ID3 tag version 2.3.0</a><ol><li><a href="#head-7d04f74ec3f80b6f8761bb601a3a0be9377162e5">Status of this document</a></li><li><a href="#head-23ac0ee64acc84a9f496e03b940d5701d6ac9e8f">Abstract</a></li></ol></li><li><a href="#head-2d62428ce142c0165419bd5c2a6d2d48e4f1fb56">Conventions in this document</a></li><li><a href="#head-0ef7011e13ae8b3678a676a65b64760b9cedf1de">ID3v2 overview</a><ol><li><a href="#head-697d09c50ed7fa96fb66c6b0a9d93585e2652b0b">ID3v2 header</a></li><li><a href="#head-237cdb2af1eb3a0b2a83dac400cac09f52afa939">ID3v2 extended header</a></li><li><a href="#head-1a37d4a15deafc294208ccfde950f77e47000bca">ID3v2 frame overview</a><ol><li><a href="#head-671e80857a8fbb3b050387a8bc439e8780a999e1">Frame header flags</a></li></ol></li><li><a href="#head-67925bcb6b2031594e0f1a4797488f62a64cb450">Default flags</a></li></ol></li><li><a href="#head-e4b3c63f836c3eb26a39be082065c21fba4e0acc">Declared ID3v2 frames</a><ol><li><a href="#head-86fc458c0f12976c6866d12610551218827dca80">Unique file identifier</a></li><li><a href="#head-05145d86196104464db40d63035e402ee3c504e7">Text information frames</a><ol><li><a href="#head-42b02d20fb8bf48e38ec5415e34909945dd849dc">Text information frames - details</a></li><li><a href="#head-29e37534e169ad913deb6a4fee345028f3db7c3f">User defined text information frame</a></li></ol></li><li><a href="#head-66afd8fc82926f98baa42eade0a5e96010a2d77f">URL link frames</a><ol><li><a href="#head-871541c0b67dfb4bf890d1a2c72e7b41595b36cc">URL link frames - details</a></li><li><a href="#head-b0e8086b6e51f25d126cd5f26d13696defb44aa9">User defined URL link frame</a></li></ol></li><li><a href="#head-a0ac5e01361fd414b67a39130716fea4c970e004">Involved people list</a></li><li><a href="#head-f56120ef5f24045436031b86131ce297b0e43f42">Music CD identifier</a></li><li><a href="#head-d302f218df2a0868b706d1525e9cc78ebcb86e16">Event timing codes</a></li><li><a href="#head-febc618121880ee751b0c2a87327b0e698213dc4">MPEG location lookup table</a></li><li><a href="#head-9804169dd0fc7e12a1050a02d3419e6b3dc4f5e9">Synchronised tempo codes</a></li><li><a href="#head-e76d4fb26268baf285bff899581cc284427a2789">Unsychronised lyrics/text transcription</a></li><li><a href="#head-792dcad788fe1b8bcd7f9d7e9eec7549e1864546">Synchronised lyrics/text</a></li><li><a href="#head-31c41e8642534f1854246708af84f7d2c8d39684">Comments</a></li><li><a href="#head-d3d2bfba9882a197c1b55a80f52bb676653d3604">Relative volume adjustment</a></li><li><a href="#head-3d14382e1cdc086bc43df0f0b0e63cf0c33f7c64">Equalisation</a></li><li><a href="#head-5f9be76d443047174b52f89243bbc671d7937fa3">Reverb</a></li><li><a href="#head-70a65d30522ef0d37642224c2a40517ae35b7155">Attached picture</a></li><li><a href="#head-060e0e68febc214cad81328a2baf7fd1ce17b59b">General encapsulated object</a></li><li><a href="#head-b31a15058cdc13a61e13ab109c25782bc3387075">Play counter</a></li><li><a href="#head-2452ec9cf8b42c5c117b518b69e129ff67970852">Popularimeter</a></li><li><a href="#head-85933b08aab499dc462e7c09752076c92e80f567">Recommended buffer size</a></li><li><a href="#head-64778eca1ee53ea0f439602809c142e312669eda">Audio encryption</a></li><li><a href="#head-1f5f3f280f04ce712a1d5a3531fb0dd396c6ea9f">Linked information</a></li><li><a href="#head-dfd851b017379ad18d434c1a1be6bfb98c16c4ed">Position synchronisation frame</a></li><li><a href="#head-d25b79fcb6f0d51c28301e2cd8a1750b061a5bef">Terms of use frame</a></li><li><a href="#head-3c67d23d7cfecadd0253293fada37fbba5c6f1e1">Ownership frame</a></li><li><a href="#head-5cd03d43fbc0db57aaaf42cd5a2150705f50eada">Commercial frame</a></li><li><a href="#head-104c980db64c9df28fbaa4ae87e365d50930534d">Encryption method registration</a></li><li><a href="#head-ba309170decab08b9bcb1ffb6d6974c0bfd1ead3">Group identification registration</a></li><li><a href="#head-6e58a3ef53dd199d9af3dd33d544a39a5343ab3c">Private frame</a></li></ol></li><li><a href="#head-c632e49403443283c464955b36911f949bbb2586">The unsynchronisation scheme</a></li><li><a href="#head-2e25d065aae179b2e61ebe76ded3ce201fd6764f">Copyright</a></li><li><a href="#head-090c9e5e624f843e946e467f0ad8a1c21aacaa01">References</a></li><li><a href="#head-50c2e666f19bdeb915260d8de35bcb5bc35330d6">Appendix</a><ol><li><a href="#head-129376727ebe5309c1de1888987d070288d7c7e7">Appendix A - Genre List from ID3v1</a></li></ol></li><li><a href="#head-ab9d99d0fd7edd520f035105d0b20ac9adebce85">Author's Address</a></li></ol></div> <span class="anchor" id="line-28"></span><span class="anchor" id="line-29"></span><span class="anchor" id="line-30"></span><p class="line867"><span class="anchor" id="sec2"></span> <span class="anchor" id="line-31"></span>
</p><h1 id="head-2d62428ce142c0165419bd5c2a6d2d48e4f1fb56">2. Conventions in this document</h1>
<span class="anchor" id="line-32"></span><p class="line874">In the
examples, text within "" is a text string exactly as it appears in a
file. Numbers preceded with $ are hexadecimal and numbers preceded with
% are binary. $xx is used to indicate a byte with unknown content. %x
is used to indicate a bit with unknown content. The most significant
bit (MSB) of a byte is called 'bit 7' and the least significant bit
(LSB) is called 'bit 0'. <span class="anchor" id="line-33"></span><span class="anchor" id="line-34"></span></p><p class="line874">A
tag is the whole tag described in this document. A frame is a block of
information in the tag. The tag consists of a header, frames and
optional padding. A field is a piece of information; one value, a
string etc. A numeric string is a string that consists of the
characters 0-9 only. <span class="anchor" id="line-35"></span><span class="anchor" id="line-36"></span></p><p class="line867"><span class="anchor" id="sec3"></span> <span class="anchor" id="line-37"></span>
</p><h1 id="head-0ef7011e13ae8b3678a676a65b64760b9cedf1de">3. ID3v2 overview</h1>
<span class="anchor" id="line-38"></span><p class="line874">The two
biggest design goals were to be able to implement ID3v2 without
disturbing old software too much and that ID3v2 should be as flexible
and expandable as possible. <span class="anchor" id="line-39"></span><span class="anchor" id="line-40"></span></p><p class="line862">The first criterion is met by the simple fact that the <a href="#MPEG">MPEG</a>
decoding software uses a syncsignal, embedded in the audiostream, to
'lock on to' the audio. Since the ID3v2 tag doesn't contain a valid
syncsignal, no software will attempt to play the tag. If, for any
reason, coincidence make a syncsignal appear within the tag it will be
taken care of by the 'unsynchronisation scheme' described in <a href="#sec5">section 5</a>. <span class="anchor" id="line-41"></span><span class="anchor" id="line-42"></span></p><p class="line874">The
second criterion has made a more noticeable impact on the design of the
ID3v2 tag. It is constructed as a container for several information
blocks, called frames, whose format need not be known to the software
that encounters them. At the start of every frame there is an
identifier that explains the frames' format and content, and a size
descriptor that allows software to skip unknown frames. <span class="anchor" id="line-43"></span><span class="anchor" id="line-44"></span></p><p class="line874">If a total revision of the ID3v2 tag should be needed, there is a version number and a size descriptor in the ID3v2 header. <span class="anchor" id="line-45"></span><span class="anchor" id="line-46"></span></p><p class="line862">The ID3 tag described in this document is mainly targeted at files encoded with <a href="#MPEG">MPEG</a>-1/2 layer I, <a href="#MPEG">MPEG</a>-1/2 layer II, <a href="#MPEG">MPEG</a>-1/2 layer III and <a href="#MPEG">MPEG</a>-2.5, but may work with other types of encoded audio. <span class="anchor" id="line-47"></span><span class="anchor" id="line-48"></span></p><p class="line874">The
bitorder in ID3v2 is most significant bit first (MSB). The byteorder in
multibyte numbers is most significant byte first (e.g. $12345678 would
be encoded $12 34 56 78). <span class="anchor" id="line-49"></span><span class="anchor" id="line-50"></span></p><p class="line874">It
is permitted to include padding after all the final frame (at the end
of the ID3 tag), making the size of all the frames together smaller
than the size given in the head of the tag. A possible purpose of this
padding is to allow for adding a few additional frames or enlarge
existing frames within the tag without having to rewrite the entire
file. The value of the padding bytes must be $00. <span class="anchor" id="line-51"></span><span class="anchor" id="line-52"></span></p><p class="line867"><span class="anchor" id="sec3.1"></span> <span class="anchor" id="line-53"></span>
</p><h2 id="head-697d09c50ed7fa96fb66c6b0a9d93585e2652b0b">3.1. ID3v2 header</h2>
<span class="anchor" id="line-54"></span><p class="line874">The ID3v2 tag header, which should be the first information in the file, is 10 bytes as follows: <span class="anchor" id="line-55"></span></p><pre>ID3v2/file identifier "ID3"
<span class="anchor" id="line-56"></span>ID3v2 version $03 00
<span class="anchor" id="line-57"></span>ID3v2 flags %abc00000
<span class="anchor" id="line-58"></span>ID3v2 size 4 * %0xxxxxxx
<span class="anchor" id="line-59"></span></pre><span class="anchor" id="line-60"></span><p class="line874">The
first three bytes of the tag are always "ID3" to indicate that this is
an ID3v2 tag, directly followed by the two version bytes. The first
byte of ID3v2 version is it's major version, while the second byte is
its revision number. In this case this is ID3v2.3.0. All revisions are
backwards compatible while major versions are not. If software with
ID3v2.2.0 and below support should encounter version three or higher it
should simply ignore the whole tag. Version and revision will never be
$FF. <span class="anchor" id="line-61"></span><span class="anchor" id="line-62"></span></p><p class="line874">The version is followed by one the ID3v2 flags field, of which currently only three flags are used. <span class="anchor" id="line-63"></span><span class="anchor" id="line-64"></span><span class="anchor" id="line-65"></span></p><dl><dt>a - Unsynchronisation</dt><dd><p class="line862">Bit 7 in the 'ID3v2 flags' indicates whether or not unsynchronisation is used (see <a href="#sec5">section 5</a> for details); a set bit indicates usage. <span class="anchor" id="line-66"></span><span class="anchor" id="line-67"></span></p></dd><dt>b - Extended header</dt><dd><p class="line862">The
second bit (bit 6) indicates whether or not the header is followed by
an extended header. The extended header is described in <a href="#sec3.2">section 3.2</a>. <span class="anchor" id="line-68"></span><span class="anchor" id="line-69"></span></p></dd><dt>c - Experimental indicator</dt><dd>The
third bit (bit 5) should be used as an 'experimental indicator'. This
flag should always be set when the tag is in an experimental stage. <span class="anchor" id="line-70"></span><span class="anchor" id="line-71"></span></dd></dl><p class="line874">All
the other flags should be cleared. If one of these undefined flags are
set that might mean that the tag is not readable for a parser that does
not know the flags function. <span class="anchor" id="line-72"></span><span class="anchor" id="line-73"></span></p><p class="line874">The
ID3v2 tag size is encoded with four bytes where the most significant
bit (bit 7) is set to zero in every byte, making a total of 28 bits.
The zeroed bits are ignored, so a 257 bytes long tag is represented as
$00 00 02 01. <span class="anchor" id="line-74"></span><span class="anchor" id="line-75"></span></p><p class="line874">The
ID3v2 tag size is the size of the complete tag after unsychronisation,
including padding, excluding the header but not excluding the extended
header (total tag size - 10). Only 28 bits (representing up to 256MB)
are used in the size description to avoid the introducuction of 'false
syncsignals'. <span class="anchor" id="line-76"></span><span class="anchor" id="line-77"></span></p><p class="line874">An ID3v2 tag can be detected with the following pattern: <span class="anchor" id="line-78"></span></p><pre>$49 44 33 yy yy xx zz zz zz zz
<span class="anchor" id="line-79"></span></pre><span class="anchor" id="line-80"></span><p class="line874">Where yy is less than $FF, xx is the 'flags' byte and zz is less than $80. <span class="anchor" id="line-81"></span><span class="anchor" id="line-82"></span></p><p class="line867"><span class="anchor" id="sec3.2"></span> <span class="anchor" id="line-83"></span>
</p><h2 id="head-237cdb2af1eb3a0b2a83dac400cac09f52afa939">3.2. ID3v2 extended header</h2>
<span class="anchor" id="line-84"></span><p class="line874">The
extended header contains information that is not vital to the correct
parsing of the tag information, hence the extended header is optional. <span class="anchor" id="line-85"></span></p><pre>Extended header size $xx xx xx xx
<span class="anchor" id="line-86"></span>Extended Flags $xx xx
<span class="anchor" id="line-87"></span>Size of padding $xx xx xx xx
<span class="anchor" id="line-88"></span></pre><span class="anchor" id="line-89"></span><p class="line874">Where
the 'Extended header size', currently 6 or 10 bytes, excludes itself.
The 'Size of padding' is simply the total tag size excluding the frames
and the headers, in other words the padding. The extended header is
considered separate from the header proper, and as such is subject to
unsynchronisation. <span class="anchor" id="line-90"></span><span class="anchor" id="line-91"></span></p><p class="line874">The
extended flags are a secondary flag set which describes further
attributes of the tag. These attributes are currently defined as
follows <span class="anchor" id="line-92"></span></p><pre>%x0000000 00000000
<span class="anchor" id="line-93"></span></pre><span class="anchor" id="line-94"></span><span class="anchor" id="line-95"></span><dl><dt>x - CRC data present</dt><dd>If
this flag is set four bytes of CRC-32 data is appended to the extended
header. The CRC should be calculated before unsynchronisation on the
data between the extended header and the padding, i.e. the frames and
only the frames. <span class="anchor" id="line-96"></span><pre>Total frame CRC $xx xx xx xx
<span class="anchor" id="line-97"></span></pre><span class="anchor" id="line-98"></span><span class="anchor" id="line-99"></span></dd></dl><p class="line867"><span class="anchor" id="sec3.3"></span> <span class="anchor" id="line-100"></span>
</p><h2 id="head-1a37d4a15deafc294208ccfde950f77e47000bca">3.3. ID3v2 frame overview</h2>
<span class="anchor" id="line-101"></span><p class="line874">As the tag
consists of a tag header and a tag body with one or more frames, all
the frames consists of a frame header followed by one or more fields
containing the actual information. The layout of the frame header: <span class="anchor" id="line-102"></span></p><pre>Frame ID $xx xx xx xx (four characters)
<span class="anchor" id="line-103"></span>Size $xx xx xx xx
<span class="anchor" id="line-104"></span>Flags $xx xx
<span class="anchor" id="line-105"></span></pre><span class="anchor" id="line-106"></span><p class="line874">The
frame ID made out of the characters capital A-Z and 0-9. Identifiers
beginning with "X", "Y" and "Z" are for experimental use and free for
everyone to use, without the need to set the experimental bit in the
tag header. Have in mind that someone else might have used the same
identifier as you. All other identifiers are either used or reserved
for future use. <span class="anchor" id="line-107"></span><span class="anchor" id="line-108"></span></p><p class="line874">The
frame ID is followed by a size descriptor, making a total header size
of ten bytes in every frame. The size is calculated as frame size
excluding frame header (frame size - 10). <span class="anchor" id="line-109"></span><span class="anchor" id="line-110"></span></p><p class="line862">In the frame header the size descriptor is followed by two flags bytes. These flags are described in <a href="#sec3.3.1">section 3.3.1</a>. <span class="anchor" id="line-111"></span><span class="anchor" id="line-112"></span></p><p class="line862">There
is no fixed order of the frames' appearance in the tag, although it is
desired that the frames are arranged in order of significance
concerning the recognition of the file. An example of such order: <a href="#sec4.1">UFID</a>, <a href="#TIT2">TIT2</a>, <a href="#sec4.5">MCDI</a>, <a href="#TRCK">TRCK</a> ... <span class="anchor" id="line-113"></span><span class="anchor" id="line-114"></span></p><p class="line874">A tag must contain at least one frame. A frame must be at least 1 byte big, excluding the header. <span class="anchor" id="line-115"></span><span class="anchor" id="line-116"></span></p><p class="line862">If nothing else is said a string is represented as <a href="#ISO-8859-1">ISO-8859-1</a>
characters in the range $20 - $FF. Such strings are represented as
<text string>, or <full text string> if newlines are
allowed, in the frame descriptions. All <a href="#UNICODE">Unicode</a>
strings use 16-bit unicode 2.0 (ISO/IEC 10646-1:1993, UCS-2). Unicode
strings must begin with the Unicode BOM ($FF FE or $FE FF) to identify
the byte order. <span class="anchor" id="line-117"></span><span class="anchor" id="line-118"></span></p><p class="line862">All numeric strings and <a href="#URL">URLs</a> are always encoded as <a href="#ISO-8859-1">ISO-8859-1</a>. Terminated strings are terminated with $00 if encoded with <a href="#ISO-8859-1">ISO-8859-1</a> and $00 00 if encoded as unicode. If nothing else is said newline character is forbidden. In <a href="#ISO-8859-1">ISO-8859-1</a>
a new line is represented, when allowed, with $0A only. Frames that
allow different types of text encoding have a text encoding description
byte directly after the frame size. If <a href="#ISO-8859-1">ISO-8859-1</a>
is used this byte should be $00, if Unicode is used it should be $01.
Strings dependent on encoding is represented as <text string
according to encoding>, or <full text string according to
encoding> if newlines are allowed. Any empty <a href="#UNICODE">Unicode</a> strings which are NULL-terminated may have the Unicode BOM followed by a Unicode NULL ($FF FE 00 00 or $FE FF 00 00). <span class="anchor" id="line-119"></span><span class="anchor" id="line-120"></span></p><p class="line862">The three byte language field is used to describe the language of the frame's content, according to <a href="#ISO-639-2">ISO-639-2</a>. <span class="anchor" id="line-121"></span><span class="anchor" id="line-122"></span></p><p class="line862">All <a href="#URL">URLs</a> may be relative, e.g. "picture.png", "../doc.txt". <span class="anchor" id="line-123"></span><span class="anchor" id="line-124"></span></p><p class="line874">If
a frame is longer than it should be, e.g. having more fields than
specified in this document, that indicates that additions to the frame
have been made in a later version of the ID3v2 standard. This is
reflected by the revision number in the header of the tag. <span class="anchor" id="line-125"></span><span class="anchor" id="line-126"></span></p><p class="line867"><span class="anchor" id="sec3.3.1"></span> <span class="anchor" id="line-127"></span>
</p><h3 id="head-671e80857a8fbb3b050387a8bc439e8780a999e1">3.3.1. Frame header flags</h3>
<span class="anchor" id="line-128"></span><p class="line874">In the
frame header the size descriptor is followed by two flags bytes. All
unused flags must be cleared. The first byte is for 'status messages'
and the second byte is for encoding purposes. If an unknown flag is set
in the first byte the frame may not be changed without the bit cleared.
If an unknown flag is set in the second byte it is likely to not be
readable. The flags field is defined as follows. <span class="anchor" id="line-129"></span></p><pre>%abc00000 %ijk00000
<span class="anchor" id="line-130"></span></pre><span class="anchor" id="line-131"></span><span class="anchor" id="line-132"></span><dl><dt>a - Tag alter preservation</dt><dd>This
flag tells the software what to do with this frame if it is unknown and
the tag is altered in any way. This applies to all kinds of
alterations, including adding more padding and reordering the frames. <span class="anchor" id="line-133"></span><pre>0 Frame should be preserved.
<span class="anchor" id="line-134"></span>1 Frame should be discarded.
<span class="anchor" id="line-135"></span></pre><span class="anchor" id="line-136"></span></dd><dt>b - File alter preservation</dt><dd>This
flag tells the software what to do with this frame if it is unknown and
the file, excluding the tag, is altered. This does not apply when the
audio is completely replaced with other audio data. <span class="anchor" id="line-137"></span><span class="anchor" id="line-138"></span><pre>0 Frame should be preserved.
<span class="anchor" id="line-139"></span>1 Frame should be discarded.
<span class="anchor" id="line-140"></span></pre><span class="anchor" id="line-141"></span></dd><dt>c - Read only</dt><dd>This
flag, if set, tells the software that the contents of this frame is
intended to be read only. Changing the contents might break something,
e.g. a signature. If the contents are changed, without knowledge in why
the frame was flagged read only and without taking the proper means to
compensate, e.g. recalculating the signature, the bit should be
cleared. <span class="anchor" id="line-142"></span></dd><dt>i - Compression</dt><dd>This flag indicates whether or not the frame is compressed. <span class="anchor" id="line-143"></span><pre>0 Frame is not compressed.
<span class="anchor" id="line-144"></span>1 Frame is compressed using [#ZLIB zlib] with 4 bytes for 'decompressed size' appended to the frame header.
<span class="anchor" id="line-145"></span></pre><span class="anchor" id="line-146"></span></dd><dt>j - Encryption</dt><dd><p class="line862">This
flag indicates wether or not the frame is enrypted. If set one byte
indicating with which method it was encrypted will be appended to the
frame header. See <a href="#sec4.26">section 4.26</a>. for more information about encryption method registration. <span class="anchor" id="line-147"></span></p><pre>0 Frame is not encrypted.
<span class="anchor" id="line-148"></span>1 Frame is encrypted.
<span class="anchor" id="line-149"></span></pre><span class="anchor" id="line-150"></span></dd><dt>k - Grouping identity</dt><dd>This
flag indicates whether or not this frame belongs in a group with other
frames. If set a group identifier byte is added to the frame header.
Every frame with the same group identifier belongs to the same group. <span class="anchor" id="line-151"></span><pre>0 Frame does not contain group information
<span class="anchor" id="line-152"></span>1 Frame contains group information
<span class="anchor" id="line-153"></span></pre><span class="anchor" id="line-154"></span><span class="anchor" id="line-155"></span></dd></dl><p class="line874">Some
flags indicates that the frame header is extended with additional
information. This information will be added to the frame header in the
same order as the flags indicating the additions. I.e. the four bytes
of decompressed size will preceed the encryption method byte. These
additions to the frame header, while not included in the frame header
size but are included in the 'frame size' field, are not subject to
encryption or compression. <span class="anchor" id="line-156"></span><span class="anchor" id="line-157"></span></p><p class="line867"><span class="anchor" id="sec3.3.2"></span> <span class="anchor" id="line-158"></span>
</p><h2 id="head-67925bcb6b2031594e0f1a4797488f62a64cb450">3.4. Default flags</h2>
<span class="anchor" id="line-159"></span><p class="line874">The
default settings for the frames described in this document can be
divided into the following classes. The flags may be set differently if
found more suitable by the software. <span class="anchor" id="line-160"></span><span class="anchor" id="line-161"></span></p><ol type="1"><li>Discarded if tag is altered, discarded if file is altered. <span class="anchor" id="line-162"></span><ul><li style="list-style-type: none;">None. <span class="anchor" id="line-163"></span><span class="anchor" id="line-164"></span></li></ul></li><li class="gap">Discarded if tag is altered, preserved if file is altered. <span class="anchor" id="line-165"></span><ul><li style="list-style-type: none;">None. <span class="anchor" id="line-166"></span><span class="anchor" id="line-167"></span></li></ul></li><li class="gap">Preserved if tag is altered, discarded if file is altered. <span class="anchor" id="line-168"></span><ul><li style="list-style-type: none;"><p class="line891"><a href="#sec4.21">AENC</a>, <a href="#sec4.6">ETCO</a>, <a href="#sec4.13">EQUA</a>, <a href="#sec4.7">MLLT</a>, <a href="#sec4.22">POSS</a>, <a href="#sec4.10">SYLT</a>, <a href="#sec4.8">SYTC</a>, <a href="#sec4.12">RVAD</a>, <a href="#TENC">TENC</a>, <a href="#TLEN">TLEN</a>, <a href="#TSIZ">TSIZ</a> <span class="anchor" id="line-169"></span><span class="anchor" id="line-170"></span></p></li></ul></li><li class="gap">Preserved if tag is altered, preserved if file is altered. <span class="anchor" id="line-171"></span><ul><li style="list-style-type: none;">The rest of the frames. <span class="anchor" id="line-172"></span><span class="anchor" id="line-173"></span></li></ul></li></ol><p class="line867"><span class="anchor" id="sec4"></span> <span class="anchor" id="line-174"></span>
</p><h1 id="head-e4b3c63f836c3eb26a39be082065c21fba4e0acc">4. Declared ID3v2 frames</h1>
<span class="anchor" id="line-175"></span><p class="line874">The following frames are declared in this draft. <span class="anchor" id="line-176"></span></p><pre>4.20 AENC [#sec4.20 Audio encryption]
<span class="anchor" id="line-177"></span>4.15 APIC [#sec4.15 Attached picture]
<span class="anchor" id="line-178"></span>4.11 COMM [#sec4.11 Comments]
<span class="anchor" id="line-179"></span>4.25 COMR [#sec4.25 Commercial frame]
<span class="anchor" id="line-180"></span>4.26 ENCR [#sec4.26 Encryption method registration]
<span class="anchor" id="line-181"></span>4.13 EQUA [#sec4.13 Equalization]
<span class="anchor" id="line-182"></span>4.6 ETCO [#sec4.6 Event timing codes]
<span class="anchor" id="line-183"></span>4.16 GEOB [#sec4.16 General encapsulated object]
<span class="anchor" id="line-184"></span>4.27 GRID [#sec4.27 Group identification registration]
<span class="anchor" id="line-185"></span>4.4 IPLS [#sec4.4 Involved people list]
<span class="anchor" id="line-186"></span>4.21 LINK [#sec4.21 Linked information]
<span class="anchor" id="line-187"></span>4.5 MCDI [#sec4.5 Music CD identifier]
<span class="anchor" id="line-188"></span>4.7 MLLT [#sec4.7 MPEG location lookup table]
<span class="anchor" id="line-189"></span>4.24 OWNE [#sec4.24 Ownership frame]
<span class="anchor" id="line-190"></span>4.28 PRIV [#sec4.28 Private frame]
<span class="anchor" id="line-191"></span>4.17 PCNT [#sec4.17 Play counter]
<span class="anchor" id="line-192"></span>4.18 POPM [#sec4.18 Popularimeter]
<span class="anchor" id="line-193"></span>4.22 POSS [#sec4.22 Position synchronisation frame]
<span class="anchor" id="line-194"></span>4.19 RBUF [#sec4.19 Recommended buffer size]
<span class="anchor" id="line-195"></span>4.12 RVAD [#sec4.12 Relative volume adjustment]
<span class="anchor" id="line-196"></span>4.14 RVRB [#sec4.14 Reverb]
<span class="anchor" id="line-197"></span>4.10 SYLT [#sec4.10 Synchronized lyric/text]
<span class="anchor" id="line-198"></span>4.8 SYTC [#sec4.8 Synchronized tempo codes]
<span class="anchor" id="line-199"></span>4.2.1 TALB [#TALB Album/Movie/Show title]
<span class="anchor" id="line-200"></span>4.2.1 TBPM [#TBPM BPM (beats per minute)]
<span class="anchor" id="line-201"></span>4.2.1 TCOM [#TCOM Composer]
<span class="anchor" id="line-202"></span>4.2.1 TCON [#TCON Content type]
<span class="anchor" id="line-203"></span>4.2.1 TCOP [#TCOP Copyright message]
<span class="anchor" id="line-204"></span>4.2.1 TDAT [#TDAT Date]
<span class="anchor" id="line-205"></span>4.2.1 TDLY [#TDLY Playlist delay]
<span class="anchor" id="line-206"></span>4.2.1 TENC [#TENC Encoded by]
<span class="anchor" id="line-207"></span>4.2.1 TEXT [#TEXT Lyricist/Text writer]
<span class="anchor" id="line-208"></span>4.2.1 TFLT [#TFLT File type]
<span class="anchor" id="line-209"></span>4.2.1 TIME [#TIME Time]
<span class="anchor" id="line-210"></span>4.2.1 TIT1 [#TIT1 Content group description]
<span class="anchor" id="line-211"></span>4.2.1 TIT2 [#TIT2 Title/songname/content description]
<span class="anchor" id="line-212"></span>4.2.1 TIT3 [#TIT3 Subtitle/Description refinement]
<span class="anchor" id="line-213"></span>4.2.1 TKEY [#TKEY Initial key]
<span class="anchor" id="line-214"></span>4.2.1 TLAN [#TLAN Language(s)]
<span class="anchor" id="line-215"></span>4.2.1 TLEN [#TLEN Length]
<span class="anchor" id="line-216"></span>4.2.1 TMED [#TMED Media type]
<span class="anchor" id="line-217"></span>4.2.1 TOAL [#TOAL Original album/movie/show title]
<span class="anchor" id="line-218"></span>4.2.1 TOFN [#TOFN Original filename]
<span class="anchor" id="line-219"></span>4.2.1 TOLY [#TOLY Original lyricist(s)/text writer(s)]
<span class="anchor" id="line-220"></span>4.2.1 TOPE [#TOPE Original artist(s)/performer(s)]
<span class="anchor" id="line-221"></span>4.2.1 TORY [#TORY Original release year]
<span class="anchor" id="line-222"></span>4.2.1 TOWN [#TOWN File owner/licensee]
<span class="anchor" id="line-223"></span>4.2.1 TPE1 [#TPE1 Lead performer(s)/Soloist(s)]
<span class="anchor" id="line-224"></span>4.2.1 TPE2 [#TPE2 Band/orchestra/accompaniment]
<span class="anchor" id="line-225"></span>4.2.1 TPE3 [#TPE3 Conductor/performer refinement]
<span class="anchor" id="line-226"></span>4.2.1 TPE4 [#TPE4 Interpreted, remixed, or otherwise modified by]
<span class="anchor" id="line-227"></span>4.2.1 TPOS [#TPOS Part of a set]
<span class="anchor" id="line-228"></span>4.2.1 TPUB [#TPUB Publisher]
<span class="anchor" id="line-229"></span>4.2.1 TRCK [#TRCK Track number/Position in set]
<span class="anchor" id="line-230"></span>4.2.1 TRDA [#TRDA Recording dates]
<span class="anchor" id="line-231"></span>4.2.1 TRSN [#TRSN Internet radio station name]
<span class="anchor" id="line-232"></span>4.2.1 TRSO [#TRSO Internet radio station owner]
<span class="anchor" id="line-233"></span>4.2.1 TSIZ [#TSIZ Size]
<span class="anchor" id="line-234"></span>4.2.1 TSRC [#TSRC ISRC (international standard recording code)]
<span class="anchor" id="line-235"></span>4.2.1 TSSE [#TSEE Software/Hardware and settings used for encoding]
<span class="anchor" id="line-236"></span>4.2.1 TYER [#TYER Year]
<span class="anchor" id="line-237"></span>4.2.2 TXXX [#TXXX User defined text information frame]
<span class="anchor" id="line-238"></span>4.1 UFID [#sec4.1 Unique file identifier]
<span class="anchor" id="line-239"></span>4.23 USER [#sec4.23 Terms of use]
<span class="anchor" id="line-240"></span>4.9 USLT [#sec4.9 Unsychronized lyric/text transcription]
<span class="anchor" id="line-241"></span>4.3.1 WCOM [#WCOM Commercial information]
<span class="anchor" id="line-242"></span>4.3.1 WCOP [#WCOP Copyright/Legal information]
<span class="anchor" id="line-243"></span>4.3.1 WOAF [#WOAF Official audio file webpage]
<span class="anchor" id="line-244"></span>4.3.1 WOAR [#WOAR Official artist/performer webpage]
<span class="anchor" id="line-245"></span>4.3.1 WOAS [#WOAS Official audio source webpage]
<span class="anchor" id="line-246"></span>4.3.1 WORS [#WORS Official internet radio station homepage]
<span class="anchor" id="line-247"></span>4.3.1 WPAY [#WPAY Payment]
<span class="anchor" id="line-248"></span>4.3.1 WPUB [#WPUB Publishers official webpage]
<span class="anchor" id="line-249"></span>4.3.2 WXXX [#WXXX User defined URL link frame]
<span class="anchor" id="line-250"></span></pre><span class="anchor" id="line-251"></span><span class="anchor" id="line-252"></span><p class="line867"><span class="anchor" id="sec4.1"></span> <span class="anchor" id="line-253"></span>
</p><h2 id="head-86fc458c0f12976c6866d12610551218827dca80">4.1. Unique file identifier</h2>
<span class="anchor" id="line-254"></span><p class="line862">This
frame's purpose is to be able to identify the audio file in a database
that may contain more information relevant to the content. Since
standardisation of such a database is beyond this document, all frames
begin with a null-terminated string with a URL containing an email
address, or a link to a location where an email address can be found,
that belongs to the organisation responsible for this specific database
implementation. Questions regarding the database should be sent to the
indicated email address. The URL should not be used for the actual
database queries. The string "<a class="http" href="http://www.id3.org/dummy/ufid.html">http://www.id3.org/dummy/ufid.html</a>"
should be used for tests. Software that isn't told otherwise may safely
remove such frames. The 'Owner identifier' must be non-empty (more than
just a termination). The 'Owner identifier' is then followed by the
actual identifier, which may be up to 64 bytes. There may be more than
one "UFID" frame in a tag, but only one with the same 'Owner
identifier'. <span class="anchor" id="line-255"></span></p><pre><Header for 'Unique file identifier', ID: "UFID">
<span class="anchor" id="line-256"></span>Owner identifier <text string> $00
<span class="anchor" id="line-257"></span>Identifier <up to 64 bytes binary data>
<span class="anchor" id="line-258"></span></pre><span class="anchor" id="line-259"></span><span class="anchor" id="line-260"></span><p class="line867"><span class="anchor" id="sec4.2"></span> <span class="anchor" id="line-261"></span>
</p><h2 id="head-05145d86196104464db40d63035e402ee3c504e7">4.2. Text information frames</h2>
<span class="anchor" id="line-262"></span><p class="line874">The text
information frames are the most important frames, containing
information like artist, album and more. There may only be one text
information frame of its kind in an tag. If the textstring is followed
by a termination ($00 (00)) all the following information should be
ignored and not be displayed. All text frame identifiers begin with
"T". Only text frame identifiers begin with "T", with the exception of
the "TXXX" frame. All the text information frames have the following
format: <span class="anchor" id="line-263"></span></p><pre><Header for 'Text information frame', ID: "T000" - "TZZZ", excluding "TXXX" described in 4.2.2.>
<span class="anchor" id="line-264"></span>Text encoding $xx
<span class="anchor" id="line-265"></span>Information <text string according to encoding>
<span class="anchor" id="line-266"></span></pre><span class="anchor" id="line-267"></span><span class="anchor" id="line-268"></span><p class="line867"><span class="anchor" id="sec4.2.1"></span> <span class="anchor" id="line-269"></span>
</p><h3 id="head-42b02d20fb8bf48e38ec5415e34909945dd849dc">4.2.1. Text information frames - details</h3>
<span class="anchor" id="line-270"></span><p class="line867"><span class="anchor" id="TALB"></span> <span class="anchor" id="line-271"></span></p><dl><dt>TALB</dt><dd>The
'Album/Movie/Show title' frame is intended for the title of the
recording(/source of sound) which the audio in the file is taken from. <span class="anchor" id="line-272"></span><span class="anchor" id="line-273"></span></dd></dl><p class="line867"><span class="anchor" id="TBPM"></span> <span class="anchor" id="line-274"></span></p><dl><dt>TBPM</dt><dd>The
'BPM' frame contains the number of beats per minute in the mainpart of
the audio. The BPM is an integer and represented as a numerical string.
<span class="anchor" id="line-275"></span><span class="anchor" id="line-276"></span></dd></dl><p class="line867"><span class="anchor" id="TCOM"></span> <span class="anchor" id="line-277"></span></p><dl><dt>TCOM</dt><dd>The 'Composer(s)' frame is intended for the name of the composer(s). They are seperated with the "/" character. <span class="anchor" id="line-278"></span><span class="anchor" id="line-279"></span></dd></dl><p class="line867"><span class="anchor" id="TCON"></span> <span class="anchor" id="line-280"></span></p><dl><dt>TCON</dt><dd><p class="line862">The
'Content type', which previously was stored as a one byte numeric value
only, is now a numeric string. You may use one or several of the types
as ID3v1.1 did or, since the category list would be impossible to
maintain with accurate and up to date categories, define your own. <br>
<br>
References to the ID3v1 genres can be made by, as first byte, enter "("
followed by a number from the genres list (appendix A) and ended with a
")" character. This is optionally followed by a refinement, e.g. "(21)"
or "(4)Eurodisco". Several references can be made in the same frame,
e.g. "(51)(39)". If the refinement should begin with a "(" character it
should be replaced with "((", e.g. "((I can figure out any genre)" or
"(55)((I think...)". The following new content types is defined in
ID3v2 and is implemented in the same way as the numerig content types,
e.g. "(RX)". <span class="anchor" id="line-281"></span></p><pre>RX Remix
<span class="anchor" id="line-282"></span>CR Cover
<span class="anchor" id="line-283"></span></pre><span class="anchor" id="line-284"></span><span class="anchor" id="line-285"></span></dd></dl><p class="line867"><span class="anchor" id="TCOP"></span> <span class="anchor" id="line-286"></span></p><dl><dt>TCOP</dt><dd>The
'Copyright message' frame, which must begin with a year and a space
character (making five characters), is intended for the copyright
holder of the original sound, not the audio file itself. The absence of
this frame means only that the copyright information is unavailable or
has been removed, and must not be interpreted to mean that the sound is
public domain. Every time this field is displayed the field must be
preceded with "Copyright © ". <span class="anchor" id="line-287"></span><span class="anchor" id="line-288"></span></dd></dl><p class="line867"><span class="anchor" id="TDAT"></span> <span class="anchor" id="line-289"></span></p><dl><dt>TDAT</dt><dd>The
'Date' frame is a numeric string in the DDMM format containing the date
for the recording. This field is always four characters long. <span class="anchor" id="line-290"></span><span class="anchor" id="line-291"></span></dd></dl><p class="line867"><span class="anchor" id="TDLY"></span> <span class="anchor" id="line-292"></span></p><dl><dt>TDLY</dt><dd>The
'Playlist delay' defines the numbers of milliseconds of silence between
every song in a playlist. The player should use the "ETC" frame, if
present, to skip initial silence and silence at the end of the audio to
match the 'Playlist delay' time. The time is represented as a numeric
string. <span class="anchor" id="line-293"></span><span class="anchor" id="line-294"></span></dd></dl><p class="line867"><span class="anchor" id="TENC"></span> <span class="anchor" id="line-295"></span></p><dl><dt>TENC</dt><dd>The
'Encoded by' frame contains the name of the person or organisation that
encoded the audio file. This field may contain a copyright message, if
the audio file also is copyrighted by the encoder. <span class="anchor" id="line-296"></span><span class="anchor" id="line-297"></span></dd></dl><p class="line867"><span class="anchor" id="TEXT"></span> <span class="anchor" id="line-298"></span></p><dl><dt>TEXT</dt><dd>The
'Lyricist(s)/Text writer(s)' frame is intended for the writer(s) of the
text or lyrics in the recording. They are seperated with the "/"
character. <span class="anchor" id="line-299"></span><span class="anchor" id="line-300"></span></dd></dl><p class="line867"><span class="anchor" id="TFLT"></span> <span class="anchor" id="line-301"></span></p><dl><dt>TFLT</dt><dd>The 'File type' frame indicates which type of audio this tag defines. The following type and refinements are defined: <span class="anchor" id="line-302"></span><pre>MPG MPEG Audio
<span class="anchor" id="line-303"></span>/1 MPEG 1/2 layer I
<span class="anchor" id="line-304"></span>/2 MPEG 1/2 layer II
<span class="anchor" id="line-305"></span>/3 MPEG 1/2 layer III
<span class="anchor" id="line-306"></span>/2.5 MPEG 2.5
<span class="anchor" id="line-307"></span> /AAC Advanced audio compression
<span class="anchor" id="line-308"></span>VQF Transform-domain Weighted Interleave Vector Quantization
<span class="anchor" id="line-309"></span>PCM Pulse Code Modulated audio
<span class="anchor" id="line-310"></span></pre><span class="anchor" id="line-311"></span></dd></dl><p class="line874">but
other types may be used, not for these types though. This is used in a
similar way to the predefined types in the "TMED" frame, but without
parentheses. If this frame is not present audio type is assumed to be
"MPG". <span class="anchor" id="line-312"></span><span class="anchor" id="line-313"></span></p><p class="line867"><span class="anchor" id="TIME"></span> <span class="anchor" id="line-314"></span></p><dl><dt>TIME</dt><dd>The
'Time' frame is a numeric string in the HHMM format containing the time
for the recording. This field is always four characters long. <span class="anchor" id="line-315"></span><span class="anchor" id="line-316"></span></dd></dl><p class="line867"><span class="anchor" id="TIT1"></span> <span class="anchor" id="line-317"></span></p><dl><dt>TIT1</dt><dd>The
'Content group description' frame is used if the sound belongs to a
larger category of sounds/music. For example, classical music is often
sorted in different musical sections (e.g. "Piano Concerto", "Weather -
Hurricane"). <span class="anchor" id="line-318"></span><span class="anchor" id="line-319"></span></dd></dl><p class="line867"><span class="anchor" id="TIT2"></span> <span class="anchor" id="line-320"></span></p><dl><dt>TIT2</dt><dd>The 'Title/Songname/Content description' frame is the actual name of the piece (e.g. "Adagio", "Hurricane Donna"). <span class="anchor" id="line-321"></span><span class="anchor" id="line-322"></span></dd></dl><p class="line867"><span class="anchor" id="TIT3"></span> <span class="anchor" id="line-323"></span></p><dl><dt>TIT3</dt><dd>The
'Subtitle/Description refinement' frame is used for information
directly related to the contents title (e.g. "Op. 16" or "Performed
live at Wembley"). <span class="anchor" id="line-324"></span><span class="anchor" id="line-325"></span></dd></dl><p class="line867"><span class="anchor" id="TKEY"></span> <span class="anchor" id="line-326"></span></p><dl><dt>TKEY</dt><dd>The
'Initial key' frame contains the musical key in which the sound starts.
It is represented as a string with a maximum length of three
characters. The ground keys are represented with "A","B","C","D","E",
"F" and "G" and halfkeys represented with "b" and "#". Minor is
represented as "m". Example "Cbm". Off key is represented with an "o"
only. <span class="anchor" id="line-327"></span><span class="anchor" id="line-328"></span></dd></dl><p class="line867"><span class="anchor" id="TLAN"></span> <span class="anchor" id="line-329"></span></p><dl><dt>TLAN</dt><dd>The
'Language(s)' frame should contain the languages of the text or lyrics
spoken or sung in the audio. The language is represented with three
characters according to ISO-639-2. If more than one language is used in
the text their language codes should follow according to their usage. <span class="anchor" id="line-330"></span><span class="anchor" id="line-331"></span></dd></dl><p class="line867"><span class="anchor" id="TLEN"></span> <span class="anchor" id="line-332"></span></p><dl><dt>TLEN</dt><dd>The 'Length' frame contains the length of the audiofile in milliseconds, represented as a numeric string. <span class="anchor" id="line-333"></span><span class="anchor" id="line-334"></span></dd></dl><p class="line867"><span class="anchor" id="TMED"></span> <span class="anchor" id="line-335"></span></p><dl><dt>TMED</dt><dd>The
'Media type' frame describes from which media the sound originated.
This may be a text string or a reference to the predefined media types
found in the list below. References are made within "(" and ")" and are
optionally followed by a text refinement, e.g. "(MC) with four
channels". If a text refinement should begin with a "(" character it
should be replaced with "((" in the same way as in the "TCO" frame.
Predefined refinements is appended after the media type, e.g. "(CD/A)"
or "(VID/PAL/VHS)". <span class="anchor" id="line-336"></span><pre>DIG Other digital media
<span class="anchor" id="line-337"></span> /A Analog transfer from media
<span class="anchor" id="line-338"></span>
<span class="anchor" id="line-339"></span>ANA Other analog media
<span class="anchor" id="line-340"></span> /WAC Wax cylinder
<span class="anchor" id="line-341"></span> /8CA 8-track tape cassette
<span class="anchor" id="line-342"></span>
<span class="anchor" id="line-343"></span>CD CD
<span class="anchor" id="line-344"></span> /A Analog transfer from media
<span class="anchor" id="line-345"></span> /DD DDD
<span class="anchor" id="line-346"></span> /AD ADD
<span class="anchor" id="line-347"></span> /AA AAD
<span class="anchor" id="line-348"></span>
<span class="anchor" id="line-349"></span>LD Laserdisc
<span class="anchor" id="line-350"></span> /A Analog transfer from media
<span class="anchor" id="line-351"></span>
<span class="anchor" id="line-352"></span>TT Turntable records
<span class="anchor" id="line-353"></span> /33 33.33 rpm
<span class="anchor" id="line-354"></span> /45 45 rpm
<span class="anchor" id="line-355"></span> /71 71.29 rpm
<span class="anchor" id="line-356"></span> /76 76.59 rpm
<span class="anchor" id="line-357"></span> /78 78.26 rpm
<span class="anchor" id="line-358"></span> /80 80 rpm
<span class="anchor" id="line-359"></span>
<span class="anchor" id="line-360"></span>MD MiniDisc
<span class="anchor" id="line-361"></span> /A Analog transfer from media
<span class="anchor" id="line-362"></span>
<span class="anchor" id="line-363"></span>DAT DAT
<span class="anchor" id="line-364"></span> /A Analog transfer from media
<span class="anchor" id="line-365"></span> /1 standard, 48 kHz/16 bits, linear
<span class="anchor" id="line-366"></span> /2 mode 2, 32 kHz/16 bits, linear
<span class="anchor" id="line-367"></span> /3 mode 3, 32 kHz/12 bits, nonlinear, low speed
<span class="anchor" id="line-368"></span> /4 mode 4, 32 kHz/12 bits, 4 channels
<span class="anchor" id="line-369"></span> /5 mode 5, 44.1 kHz/16 bits, linear
<span class="anchor" id="line-370"></span> /6 mode 6, 44.1 kHz/16 bits, 'wide track' play
<span class="anchor" id="line-371"></span>
<span class="anchor" id="line-372"></span>DCC DCC
<span class="anchor" id="line-373"></span> /A Analog transfer from media
<span class="anchor" id="line-374"></span>
<span class="anchor" id="line-375"></span>DVD DVD
<span class="anchor" id="line-376"></span> /A Analog transfer from media
<span class="anchor" id="line-377"></span>
<span class="anchor" id="line-378"></span>TV Television
<span class="anchor" id="line-379"></span> /PAL PAL
<span class="anchor" id="line-380"></span> /NTSC NTSC
<span class="anchor" id="line-381"></span> /SECAM SECAM
<span class="anchor" id="line-382"></span>
<span class="anchor" id="line-383"></span>VID Video
<span class="anchor" id="line-384"></span> /PAL PAL
<span class="anchor" id="line-385"></span> /NTSC NTSC
<span class="anchor" id="line-386"></span> /SECAM SECAM
<span class="anchor" id="line-387"></span> /VHS VHS
<span class="anchor" id="line-388"></span> /SVHS S-VHS
<span class="anchor" id="line-389"></span> /BETA BETAMAX
<span class="anchor" id="line-390"></span>
<span class="anchor" id="line-391"></span>RAD Radio
<span class="anchor" id="line-392"></span> /FM FM
<span class="anchor" id="line-393"></span> /AM AM
<span class="anchor" id="line-394"></span> /LW LW
<span class="anchor" id="line-395"></span> /MW MW
<span class="anchor" id="line-396"></span>
<span class="anchor" id="line-397"></span>TEL Telephone
<span class="anchor" id="line-398"></span> /I ISDN
<span class="anchor" id="line-399"></span>
<span class="anchor" id="line-400"></span>MC MC (normal cassette)
<span class="anchor" id="line-401"></span> /4 4.75 cm/s (normal speed for a two sided cassette)
<span class="anchor" id="line-402"></span> /9 9.5 cm/s
<span class="anchor" id="line-403"></span> /I Type I cassette (ferric/normal)
<span class="anchor" id="line-404"></span> /II Type II cassette (chrome)
<span class="anchor" id="line-405"></span> /III Type III cassette (ferric chrome)
<span class="anchor" id="line-406"></span> /IV Type IV cassette (metal)
<span class="anchor" id="line-407"></span>
<span class="anchor" id="line-408"></span>REE Reel
<span class="anchor" id="line-409"></span> /9 9.5 cm/s
<span class="anchor" id="line-410"></span> /19 19 cm/s
<span class="anchor" id="line-411"></span> /38 38 cm/s
<span class="anchor" id="line-412"></span> /76 76 cm/s
<span class="anchor" id="line-413"></span> /I Type I cassette (ferric/normal)
<span class="anchor" id="line-414"></span> /II Type II cassette (chrome)
<span class="anchor" id="line-415"></span> /III Type III cassette (ferric chrome)
<span class="anchor" id="line-416"></span> /IV Type IV cassette (metal)
<span class="anchor" id="line-417"></span></pre><span class="anchor" id="line-418"></span><span class="anchor" id="line-419"></span></dd></dl><p class="line867"><span class="anchor" id="TOAL"></span> <span class="anchor" id="line-420"></span></p><dl><dt>TOAL</dt><dd>The
'Original album/movie/show title' frame is intended for the title of
the original recording (or source of sound), if for example the music
in the file should be a cover of a previously released song. <span class="anchor" id="line-421"></span><span class="anchor" id="line-422"></span></dd></dl><p class="line867"><span class="anchor" id="TOFN"></span> <span class="anchor" id="line-423"></span></p><dl><dt>TOFN</dt><dd>The
'Original filename' frame contains the preferred filename for the file,
since some media doesn't allow the desired length of the filename. The
filename is case sensitive and includes its suffix. <span class="anchor" id="line-424"></span><span class="anchor" id="line-425"></span></dd></dl><p class="line867"><span class="anchor" id="TOLY"></span> <span class="anchor" id="line-426"></span></p><dl><dt>TOLY</dt><dd>The
'Original lyricist(s)/text writer(s)' frame is intended for the text
writer(s) of the original recording, if for example the music in the
file should be a cover of a previously released song. The text writers
are seperated with the "/" character. <span class="anchor" id="line-427"></span><span class="anchor" id="line-428"></span></dd></dl><p class="line867"><span class="anchor" id="TOPE"></span> <span class="anchor" id="line-429"></span></p><dl><dt>TOPE</dt><dd>The
'Original artist(s)/performer(s)' frame is intended for the
performer(s) of the original recording, if for example the music in the
file should be a cover of a previously released song. The performers
are seperated with the "/" character. <span class="anchor" id="line-430"></span><span class="anchor" id="line-431"></span></dd></dl><p class="line867"><span class="anchor" id="TORY"></span> <span class="anchor" id="line-432"></span></p><dl><dt>TORY</dt><dd>The
'Original release year' frame is intended for the year when the
original recording, if for example the music in the file should be a
cover of a previously released song, was released. The field is
formatted as in the "TYER" frame. <span class="anchor" id="line-433"></span><span class="anchor" id="line-434"></span></dd></dl><p class="line867"><span class="anchor" id="TOWN"></span> <span class="anchor" id="line-435"></span></p><dl><dt>TOWN</dt><dd>The 'File owner/licensee' frame contains the name of the owner or licensee of the file and it's contents. <span class="anchor" id="line-436"></span><span class="anchor" id="line-437"></span></dd></dl><p class="line867"><span class="anchor" id="TPE1"></span> <span class="anchor" id="line-438"></span></p><dl><dt>TPE1</dt><dd>The
'Lead artist(s)/Lead performer(s)/Soloist(s)/Performing group' is used
for the main artist(s). They are seperated with the "/" character. <span class="anchor" id="line-439"></span><span class="anchor" id="line-440"></span></dd></dl><p class="line867"><span class="anchor" id="TPE2"></span> <span class="anchor" id="line-441"></span></p><dl><dt>TPE2</dt><dd>The 'Band/Orchestra/Accompaniment' frame is used for additional information about the performers in the recording. <span class="anchor" id="line-442"></span><span class="anchor" id="line-443"></span></dd></dl><p class="line867"><span class="anchor" id="TPE3"></span> <span class="anchor" id="line-444"></span></p><dl><dt>TPE3</dt><dd>The 'Conductor' frame is used for the name of the conductor. <span class="anchor" id="line-445"></span><span class="anchor" id="line-446"></span></dd></dl><p class="line867"><span class="anchor" id="TPE4"></span> <span class="anchor" id="line-447"></span></p><dl><dt>TPE4</dt><dd>The
'Interpreted, remixed, or otherwise modified by' frame contains more
information about the people behind a remix and similar interpretations
of another existing piece. <span class="anchor" id="line-448"></span><span class="anchor" id="line-449"></span></dd></dl><p class="line867"><span class="anchor" id="TPOS"></span> <span class="anchor" id="line-450"></span></p><dl><dt>TPOS</dt><dd>The
'Part of a set' frame is a numeric string that describes which part of
a set the audio came from. This frame is used if the source described
in the "TALB" frame is divided into several mediums, e.g. a double CD.
The value may be extended with a "/" character and a numeric string
containing the total number of parts in the set. E.g. "1/2". <span class="anchor" id="line-451"></span><span class="anchor" id="line-452"></span></dd></dl><p class="line867"><span class="anchor" id="TPUB"></span> <span class="anchor" id="line-453"></span></p><dl><dt>TPUB</dt><dd>The 'Publisher' frame simply contains the name of the label or publisher. <span class="anchor" id="line-454"></span><span class="anchor" id="line-455"></span></dd></dl><p class="line867"><span class="anchor" id="TRCK"></span> <span class="anchor" id="line-456"></span></p><dl><dt>TRCK</dt><dd>The
'Track number/Position in set' frame is a numeric string containing the
order number of the audio-file on its original recording. This may be
extended with a "/" character and a numeric string containing the total
numer of tracks/elements on the original recording. E.g. "4/9". <span class="anchor" id="line-457"></span><span class="anchor" id="line-458"></span></dd></dl><p class="line867"><span class="anchor" id="TRDA"></span> <span class="anchor" id="line-459"></span></p><dl><dt>TRDA</dt><dd>The
'Recording dates' frame is a intended to be used as complement to the
"TYER", "TDAT" and "TIME" frames. E.g. "4th-7th June, 12th June" in
combination with the "TYER" frame. <span class="anchor" id="line-460"></span><span class="anchor" id="line-461"></span></dd></dl><p class="line867"><span class="anchor" id="TRSN"></span> <span class="anchor" id="line-462"></span></p><dl><dt>TRSN</dt><dd>The 'Internet radio station name' frame contains the name of the internet radio station from which the audio is streamed. <span class="anchor" id="line-463"></span><span class="anchor" id="line-464"></span></dd></dl><p class="line867"><span class="anchor" id="TRSO"></span> <span class="anchor" id="line-465"></span></p><dl><dt>TRSO</dt><dd>The
'Internet radio station owner' frame contains the name of the owner of
the internet radio station from which the audio is streamed. <span class="anchor" id="line-466"></span><span class="anchor" id="line-467"></span></dd></dl><p class="line867"><span class="anchor" id="TSIZ"></span> <span class="anchor" id="line-468"></span></p><dl><dt>TSIZ</dt><dd>The 'Size' frame contains the size of the audiofile in bytes, excluding the ID3v2 tag, represented as a numeric string. <span class="anchor" id="line-469"></span><span class="anchor" id="line-470"></span></dd></dl><p class="line867"><span class="anchor" id="TSRC"></span> <span class="anchor" id="line-471"></span></p><dl><dt>TSRC</dt><dd>The 'ISRC' frame should contain the International Standard Recording Code (ISRC) (12 characters). <span class="anchor" id="line-472"></span><span class="anchor" id="line-473"></span></dd></dl><p class="line867"><span class="anchor" id="TSSE"></span> <span class="anchor" id="line-474"></span></p><dl><dt>TSSE</dt><dd>The
'Software/Hardware and settings used for encoding' frame includes the
used audio encoder and its settings when the file was encoded. Hardware
refers to hardware encoders, not the computer on which a program was
run. <span class="anchor" id="line-475"></span><span class="anchor" id="line-476"></span></dd></dl><p class="line867"><span class="anchor" id="TYER"></span> <span class="anchor" id="line-477"></span></p><dl><dt>TYER</dt><dd>The
'Year' frame is a numeric string with a year of the recording. This
frames is always four characters long (until the year 10000). <span class="anchor" id="line-478"></span><span class="anchor" id="line-479"></span></dd></dl><p class="line867">
</p><h3 id="head-29e37534e169ad913deb6a4fee345028f3db7c3f">4.2.2. User defined text information frame</h3>
<span class="anchor" id="line-480"></span><span class="anchor" id="line-481"></span><p class="line874">This
frame is intended for one-string text information concerning the
audiofile in a similar way to the other "T"-frames. The frame body
consists of a description of the string, represented as a terminated
string, followed by the actual string. There may be more than one
"TXXX" frame in each tag, but only one with the same description. <span class="anchor" id="line-482"></span></p><pre><Header for 'User defined text information frame', ID: "TXXX">
<span class="anchor" id="line-483"></span>Text encoding $xx
<span class="anchor" id="line-484"></span>Description <text string according to encoding> $00 (00)
<span class="anchor" id="line-485"></span>Value <text string according to encoding>
<span class="anchor" id="line-486"></span></pre><span class="anchor" id="line-487"></span><span class="anchor" id="line-488"></span><p class="line867"><span class="anchor" id="sec4.3"></span> <span class="anchor" id="line-489"></span>
</p><h2 id="head-66afd8fc82926f98baa42eade0a5e96010a2d77f">4.3. URL link frames</h2>
<span class="anchor" id="line-490"></span><p class="line874">With these
frames dynamic data such as webpages with touring information, price
information or plain ordinary news can be added to the tag. There may
only be one URL link frame of its kind in an tag, except when stated
otherwise in the frame description. If the textstring is followed by a
termination ($00 (00)) all the following information should be ignored
and not be displayed. All URL link frame identifiers begins with "W".
Only URL link frame identifiers begins with "W". All URL link frames
have the following format: <span class="anchor" id="line-491"></span></p><pre><Header for 'URL link frame', ID: "W000" - "WZZZ", excluding "WXXX" described in 4.3.2.>
<span class="anchor" id="line-492"></span>URL <text string>
<span class="anchor" id="line-493"></span></pre><span class="anchor" id="line-494"></span><span class="anchor" id="line-495"></span><p class="line867"><span class="anchor" id="sec4.3.1"></span> <span class="anchor" id="line-496"></span>
</p><h3 id="head-871541c0b67dfb4bf890d1a2c72e7b41595b36cc">4.3.1. URL link frames - details</h3>
<span class="anchor" id="line-497"></span><span class="anchor" id="line-498"></span><p class="line867"><span class="anchor" id="WCOM"></span> <span class="anchor" id="line-499"></span></p><dl><dt>WCOM</dt><dd>The
'Commercial information' frame is a URL pointing at a webpage with
information such as where the album can be bought. There may be more
than one "WCOM" frame in a tag, but not with the same content. <span class="anchor" id="line-500"></span><span class="anchor" id="line-501"></span></dd></dl><p class="line867"><span class="anchor" id="WCOP"></span> <span class="anchor" id="line-502"></span></p><dl><dt>WCOP</dt><dd>The
'Copyright/Legal information' frame is a URL pointing at a webpage
where the terms of use and ownership of the file is described. <span class="anchor" id="line-503"></span><span class="anchor" id="line-504"></span></dd></dl><p class="line867"><span class="anchor" id="WOAF"></span> <span class="anchor" id="line-505"></span></p><dl><dt>WOAF</dt><dd>The 'Official audio file webpage' frame is a URL pointing at a file specific webpage. <span class="anchor" id="line-506"></span><span class="anchor" id="line-507"></span></dd></dl><p class="line867"><span class="anchor" id="WOAR"></span> <span class="anchor" id="line-508"></span></p><dl><dt>WOAR</dt><dd>The
'Official artist/performer webpage' frame is a URL pointing at the
artists official webpage. There may be more than one "WOAR" frame in a
tag if the audio contains more than one performer, but not with the
same content. <span class="anchor" id="line-509"></span><span class="anchor" id="line-510"></span></dd></dl><p class="line867"><span class="anchor" id="WOAS"></span> <span class="anchor" id="line-511"></span></p><dl><dt>WOAS</dt><dd>The
'Official audio source webpage' frame is a URL pointing at the official
webpage for the source of the audio file, e.g. a movie. <span class="anchor" id="line-512"></span><span class="anchor" id="line-513"></span></dd></dl><p class="line867"><span class="anchor" id="WORS"></span> <span class="anchor" id="line-514"></span></p><dl><dt>WORS</dt><dd>The 'Official internet radio station homepage' contains a URL pointing at the homepage of the internet radio station. <span class="anchor" id="line-515"></span><span class="anchor" id="line-516"></span></dd></dl><p class="line867"><span class="anchor" id="WPAY"></span> <span class="anchor" id="line-517"></span></p><dl><dt>WPAY</dt><dd>The 'Payment' frame is a URL pointing at a webpage that will handle the process of paying for this file. <span class="anchor" id="line-518"></span><span class="anchor" id="line-519"></span></dd></dl><p class="line867"><span class="anchor" id="WPUB"></span> <span class="anchor" id="line-520"></span></p><dl><dt>WPUB</dt><dd>The 'Publishers official webpage' frame is a URL pointing at the official wepage for the publisher. <span class="anchor" id="line-521"></span><span class="anchor" id="line-522"></span></dd></dl><p class="line867"><span class="anchor" id="sec4.3.2"></span> <span class="anchor" id="line-523"></span>
</p><h3 id="head-b0e8086b6e51f25d126cd5f26d13696defb44aa9">4.3.2. User defined URL link frame</h3>
<span class="anchor" id="line-524"></span><span class="anchor" id="line-525"></span><p class="line874">This
frame is intended for URL links concerning the audiofile in a similar
way to the other "W"-frames. The frame body consists of a description
of the string, represented as a terminated string, followed by the
actual URL. The URL is always encoded with ISO-8859-1. There may be
more than one "WXXX" frame in each tag, but only one with the same
description. <span class="anchor" id="line-526"></span></p><pre><Header for 'User defined URL link frame', ID: "WXXX">
<span class="anchor" id="line-527"></span>Text encoding $xx
<span class="anchor" id="line-528"></span>Description <text string according to encoding> $00 (00)
<span class="anchor" id="line-529"></span>URL <text string>
<span class="anchor" id="line-530"></span></pre><span class="anchor" id="line-531"></span><p class="line867"><span class="anchor" id="sec4.4"></span> <span class="anchor" id="line-532"></span>
</p><h2 id="head-a0ac5e01361fd414b67a39130716fea4c970e004">4.4. Involved people list</h2>
<span class="anchor" id="line-533"></span><span class="anchor" id="line-534"></span><p class="line874">Since
there might be a lot of people contributing to an audio file in various
ways, such as musicians and technicians, the 'Text information frames'
are often insufficient to list everyone involved in a project. The
'Involved people list' is a frame containing the names of those
involved, and how they were involved. The body simply contains a
terminated string with the involvement directly followed by a
terminated string with the involvee followed by a new involvement and
so on. There may only be one "IPLS" frame in each tag. <span class="anchor" id="line-535"></span></p><pre><Header for 'Involved people list', ID: "IPLS">
<span class="anchor" id="line-536"></span>Text encoding $xx
<span class="anchor" id="line-537"></span>People list strings <text strings according to encoding>
<span class="anchor" id="line-538"></span></pre><span class="anchor" id="line-539"></span><span class="anchor" id="line-540"></span><p class="line867"><span class="anchor" id="sec4.5"></span> <span class="anchor" id="line-541"></span>
</p><h2 id="head-f56120ef5f24045436031b86131ce297b0e43f42">4.5. Music CD identifier</h2>
<span class="anchor" id="line-542"></span><span class="anchor" id="line-543"></span><p class="line874">This
frame is intended for music that comes from a CD, so that the CD can be
identified in databases such as the CDDB. The frame consists of a
binary dump of the Table Of Contents, TOC, from the CD, which is a
header of 4 bytes and then 8 bytes/track on the CD plus 8 bytes for the
'lead out' making a maximum of 804 bytes. The offset to the beginning
of every track on the CD should be described with a four bytes absolute
CD-frame address per track, and not with absolute time. This frame
requires a present and valid "TRCK" frame, even if the CD's only got
one track. There may only be one "MCDI" frame in each tag. <span class="anchor" id="line-544"></span></p><pre><Header for 'Music CD identifier', ID: "MCDI">
<span class="anchor" id="line-545"></span>CD TOC <binary data>
<span class="anchor" id="line-546"></span></pre><span class="anchor" id="line-547"></span><span class="anchor" id="line-548"></span><p class="line867"><span class="anchor" id="sec4.6"></span> <span class="anchor" id="line-549"></span>
</p><h2 id="head-d302f218df2a0868b706d1525e9cc78ebcb86e16">4.6. Event timing codes</h2>
<span class="anchor" id="line-550"></span><span class="anchor" id="line-551"></span><p class="line874">This frame allows synchronisation with key events in a song or sound. The header is: <span class="anchor" id="line-552"></span></p><pre><Header for 'Event timing codes', ID: "ETCO">
<span class="anchor" id="line-553"></span>Time stamp format $xx
<span class="anchor" id="line-554"></span></pre><span class="anchor" id="line-555"></span><span class="anchor" id="line-556"></span><p class="line874">Where time stamp format is: <span class="anchor" id="line-557"></span></p><pre>$01 Absolute time, 32 bit sized, using MPEG frames as unit
<span class="anchor" id="line-558"></span>$02 Absolute time, 32 bit sized, using milliseconds as unit
<span class="anchor" id="line-559"></span></pre><span class="anchor" id="line-560"></span><p class="line874">Abolute time means that every stamp contains the time from the beginning of the file. <span class="anchor" id="line-561"></span><span class="anchor" id="line-562"></span></p><p class="line874">Followed by a list of key events in the following format: <span class="anchor" id="line-563"></span></p><pre>Type of event $xx
<span class="anchor" id="line-564"></span>Time stamp $xx (xx ...)
<span class="anchor" id="line-565"></span></pre><span class="anchor" id="line-566"></span><p class="line874">The
'Time stamp' is set to zero if directly at the beginning of the sound
or after the previous event. All events should be sorted in
chronological order. The type of event is as follows: <span class="anchor" id="line-567"></span></p><pre>$00 padding (has no meaning)
<span class="anchor" id="line-568"></span>$01 end of initial silence
<span class="anchor" id="line-569"></span>$02 intro start
<span class="anchor" id="line-570"></span>$03 mainpart start
<span class="anchor" id="line-571"></span>$04 outro start
<span class="anchor" id="line-572"></span>$05 outro end
<span class="anchor" id="line-573"></span>$06 verse start
<span class="anchor" id="line-574"></span>$07 refrain start
<span class="anchor" id="line-575"></span>$08 interlude start
<span class="anchor" id="line-576"></span>$09 theme start
<span class="anchor" id="line-577"></span>$0A variation start
<span class="anchor" id="line-578"></span>$0B key change
<span class="anchor" id="line-579"></span>$0C time change
<span class="anchor" id="line-580"></span>$0D momentary unwanted noise (Snap, Crackle & Pop)
<span class="anchor" id="line-581"></span>$0E sustained noise
<span class="anchor" id="line-582"></span>$0F sustained noise end
<span class="anchor" id="line-583"></span>$10 intro end
<span class="anchor" id="line-584"></span>$11 mainpart end
<span class="anchor" id="line-585"></span>$12 verse end
<span class="anchor" id="line-586"></span>$13 refrain end
<span class="anchor" id="line-587"></span>$14 theme end
<span class="anchor" id="line-588"></span>$15-$DF reserved for future use
<span class="anchor" id="line-589"></span>$E0-$EF not predefined sync 0-F
<span class="anchor" id="line-590"></span>$F0-$FC reserved for future use
<span class="anchor" id="line-591"></span>$FD audio end (start of silence)
<span class="anchor" id="line-592"></span>$FE audio file ends
<span class="anchor" id="line-593"></span>$FF one more byte of events follows (all the following bytes with the value $FF have the same function)
<span class="anchor" id="line-594"></span></pre><span class="anchor" id="line-595"></span><p class="line874">Terminating
the start events such as "intro start" is not required. The 'Not
predefined sync's ($E0-EF) are for user events. You might want to
synchronise your music to something, like setting of an explosion
on-stage, turning on your screensaver etc. <span class="anchor" id="line-596"></span><span class="anchor" id="line-597"></span></p><p class="line874">There may only be one "ETCO" frame in each tag. <span class="anchor" id="line-598"></span><span class="anchor" id="line-599"></span></p><p class="line867"><span class="anchor" id="sec4.7"></span> <span class="anchor" id="line-600"></span>
</p><h2 id="head-febc618121880ee751b0c2a87327b0e698213dc4">4.7. MPEG location lookup table</h2>
<span class="anchor" id="line-601"></span><span class="anchor" id="line-602"></span><p class="line874">To
increase performance and accuracy of jumps within a MPEG audio file,
frames with timecodes in different locations in the file might be
useful. The ID3v2 frame includes references that the software can use
to calculate positions in the file. After the frame header is a
descriptor of how much the 'frame counter' should increase for every
reference. If this value is two then the first reference points out the
second frame, the 2nd reference the 4th frame, the 3rd reference the
6th frame etc. In a similar way the 'bytes between reference' and
'milliseconds between reference' points out bytes and milliseconds
respectively. <span class="anchor" id="line-603"></span><span class="anchor" id="line-604"></span></p><p class="line874">Each
reference consists of two parts; a certain number of bits, as defined
in 'bits for bytes deviation', that describes the difference between
what is said in 'bytes between reference' and the reality and a certain
number of bits, as defined in 'bits for milliseconds deviation', that
describes the difference between what is said in 'milliseconds between
reference' and the reality. The number of bits in every reference, i.e.
'bits for bytes deviation'+'bits for milliseconds deviation', must be a
multiple of four. There may only be one "MLLT" frame in each tag. <span class="anchor" id="line-605"></span><span class="anchor" id="line-606"></span></p><p class="line867"></p><pre><Header for 'Location lookup table', ID: "MLLT">
<span class="anchor" id="line-607"></span>MPEG frames between reference $xx xx
<span class="anchor" id="line-608"></span>Bytes between reference $xx xx xx
<span class="anchor" id="line-609"></span>Milliseconds between reference $xx xx xx
<span class="anchor" id="line-610"></span>Bits for bytes deviation $xx
<span class="anchor" id="line-611"></span>Bits for milliseconds dev. $xx
<span class="anchor" id="line-612"></span></pre><span class="anchor" id="line-613"></span><p class="line874">Then for every reference the following data is included; <span class="anchor" id="line-614"></span><span class="anchor" id="line-615"></span></p><p class="line867"></p><pre>Deviation in bytes %xxx....
<span class="anchor" id="line-616"></span>Deviation in milliseconds %xxx....
<span class="anchor" id="line-617"></span></pre><span class="anchor" id="line-618"></span><span class="anchor" id="line-619"></span><p class="line867"><span class="anchor" id="sec4.8"></span> <span class="anchor" id="line-620"></span>
</p><h2 id="head-9804169dd0fc7e12a1050a02d3419e6b3dc4f5e9">4.8. Synchronised tempo codes</h2>
<span class="anchor" id="line-621"></span><span class="anchor" id="line-622"></span><p class="line874">For
a more accurate description of the tempo of a musical piece this frame
might be used. After the header follows one byte describing which time
stamp format should be used. Then follows one or more tempo codes. Each
tempo code consists of one tempo part and one time part. The tempo is
in BPM described with one or two bytes. If the first byte has the value
$FF, one more byte follows, which is added to the first giving a range
from 2 - 510 BPM, since $00 and $01 is reserved. $00 is used to
describe a beat-free time period, which is not the same as a music-free
time period. $01 is used to indicate one single beat-stroke followed by
a beat-free period. <span class="anchor" id="line-623"></span><span class="anchor" id="line-624"></span></p><p class="line874">The
tempo descriptor is followed by a time stamp. Every time the tempo in
the music changes, a tempo descriptor may indicate this for the player.
All tempo descriptors should be sorted in chronological order. The
first beat-stroke in a time-period is at the same time as the beat
description occurs. There may only be one "SYTC" frame in each tag. <span class="anchor" id="line-625"></span><span class="anchor" id="line-626"></span></p><p class="line867"></p><pre><Header for 'Synchronised tempo codes', ID: "SYTC">
<span class="anchor" id="line-627"></span>Time stamp format $xx
<span class="anchor" id="line-628"></span>Tempo data <binary data>
<span class="anchor" id="line-629"></span></pre><span class="anchor" id="line-630"></span><p class="line874">Where time stamp format is: <span class="anchor" id="line-631"></span><span class="anchor" id="line-632"></span></p><p class="line867"></p><pre>$01 Absolute time, 32 bit sized, using MPEG frames as unit
<span class="anchor" id="line-633"></span>$02 Absolute time, 32 bit sized, using milliseconds as unit
<span class="anchor" id="line-634"></span></pre><span class="anchor" id="line-635"></span><p class="line874">Abolute time means that every stamp contains the time from the beginning of the file. <span class="anchor" id="line-636"></span><span class="anchor" id="line-637"></span></p><p class="line867"><span class="anchor" id="sec4.9"></span> <span class="anchor" id="line-638"></span>
</p><h2 id="head-e76d4fb26268baf285bff899581cc284427a2789">4.9. Unsychronised lyrics/text transcription</h2>
<span class="anchor" id="line-639"></span><span class="anchor" id="line-640"></span><p class="line874">This
frame contains the lyrics of the song or a text transcription of other
vocal activities. The head includes an encoding descriptor and a
content descriptor. The body consists of the actual text. The 'Content
descriptor' is a terminated string. If no descriptor is entered,
'Content descriptor' is $00 (00) only. Newline characters are allowed
in the text. There may be more than one 'Unsynchronised lyrics/text
transcription' frame in each tag, but only one with the same language
and content descriptor. <span class="anchor" id="line-641"></span><span class="anchor" id="line-642"></span></p><p class="line867"></p><pre><Header for 'Unsynchronised lyrics/text transcription', ID: "USLT">
<span class="anchor" id="line-643"></span>Text encoding $xx
<span class="anchor" id="line-644"></span>Language $xx xx xx
<span class="anchor" id="line-645"></span>Content descriptor <text string according to encoding> $00 (00)
<span class="anchor" id="line-646"></span>Lyrics/text <full text string according to encoding>
<span class="anchor" id="line-647"></span></pre><span class="anchor" id="line-648"></span><span class="anchor" id="line-649"></span><p class="line867"><span class="anchor" id="sec4.10"></span> <span class="anchor" id="line-650"></span>
</p><h2 id="head-792dcad788fe1b8bcd7f9d7e9eec7549e1864546">4.10. Synchronised lyrics/text</h2>
<span class="anchor" id="line-651"></span><span class="anchor" id="line-652"></span><p class="line874">This
is another way of incorporating the words, said or sung lyrics, in the
audio file as text, this time, however, in sync with the audio. It
might also be used to describing events e.g. occurring on a stage or on
the screen in sync with the audio. The header includes a content
descriptor, represented with as terminated textstring. If no descriptor
is entered, 'Content descriptor' is $00 (00) only. <span class="anchor" id="line-653"></span><span class="anchor" id="line-654"></span></p><p class="line867"></p><pre><Header for 'Synchronised lyrics/text', ID: "SYLT">
<span class="anchor" id="line-655"></span>Text encoding $xx
<span class="anchor" id="line-656"></span>Language $xx xx xx
<span class="anchor" id="line-657"></span>Time stamp format $xx
<span class="anchor" id="line-658"></span>Content type $xx
<span class="anchor" id="line-659"></span>Content descriptor <text string according to encoding> $00 (00)
<span class="anchor" id="line-660"></span></pre><span class="anchor" id="line-661"></span><span class="anchor" id="line-662"></span><p class="line874">Encoding: <span class="anchor" id="line-663"></span></p><pre>$00 ISO-8859-1 character set is used => $00 is sync identifier.
<span class="anchor" id="line-664"></span>$01 Unicode character set is used => $00 00 is sync identifier.
<span class="anchor" id="line-665"></span></pre><span class="anchor" id="line-666"></span><span class="anchor" id="line-667"></span><p class="line874">Content type: <span class="anchor" id="line-668"></span></p><pre>$00 is other
<span class="anchor" id="line-669"></span>$01 is lyrics
<span class="anchor" id="line-670"></span>$02 is text transcription
<span class="anchor" id="line-671"></span>$03 is movement/part name (e.g. "Adagio")
<span class="anchor" id="line-672"></span>$04 is events (e.g. "Don Quijote enters the stage")
<span class="anchor" id="line-673"></span>$05 is chord (e.g. "Bb F Fsus")
<span class="anchor" id="line-674"></span>$06 is trivia/'pop up' information
<span class="anchor" id="line-675"></span></pre><span class="anchor" id="line-676"></span><p class="line874">Time stamp format is: <span class="anchor" id="line-677"></span><span class="anchor" id="line-678"></span></p><pre>$01 Absolute time, 32 bit sized, using MPEG frames as unit
<span class="anchor" id="line-679"></span>$02 Absolute time, 32 bit sized, using milliseconds as unit
<span class="anchor" id="line-680"></span></pre><span class="anchor" id="line-681"></span><span class="anchor" id="line-682"></span><p class="line874">Abolute time means that every stamp contains the time from the beginning of the file. <span class="anchor" id="line-683"></span><span class="anchor" id="line-684"></span></p><p class="line874">The
text that follows the frame header differs from that of the
unsynchronised lyrics/text transcription in one major way. Each
syllable (or whatever size of text is considered to be convenient by
the encoder) is a null terminated string followed by a time stamp
denoting where in the sound file it belongs. Each sync thus has the
following structure: <span class="anchor" id="line-685"></span><span class="anchor" id="line-686"></span></p><p class="line867"></p><pre>Terminated text to be synced (typically a syllable)
<span class="anchor" id="line-687"></span>Sync identifier (terminator to above string) $00 (00)
<span class="anchor" id="line-688"></span>Time stamp $xx (xx ...)
<span class="anchor" id="line-689"></span></pre><span class="anchor" id="line-690"></span><span class="anchor" id="line-691"></span><p class="line874">The
'time stamp' is set to zero or the whole sync is omitted if located
directly at the beginning of the sound. All time stamps should be
sorted in chronological order. The sync can be considered as a
validator of the subsequent string. <span class="anchor" id="line-692"></span><span class="anchor" id="line-693"></span></p><p class="line874">Newline
($0A) characters are allowed in all "SYLT" frames and should be used
after every entry (name, event etc.) in a frame with the content type
$03 - $04. <span class="anchor" id="line-694"></span><span class="anchor" id="line-695"></span></p><p class="line874">A
few considerations regarding whitespace characters: Whitespace
separating words should mark the beginning of a new word, thus
occurring in front of the first syllable of a new word. This is also
valid for new line characters. A syllable followed by a comma should
not be broken apart with a sync (both the syllable and the comma should
be before the sync). <span class="anchor" id="line-696"></span><span class="anchor" id="line-697"></span></p><p class="line874">An example: The "USLT" passage <span class="anchor" id="line-698"></span><span class="anchor" id="line-699"></span></p><p class="line867"></p><pre>"Strangers in the night" $0A "Exchanging glances"
<span class="anchor" id="line-700"></span></pre><span class="anchor" id="line-701"></span><span class="anchor" id="line-702"></span><p class="line874">would be "SYLT" encoded as: <span class="anchor" id="line-703"></span><span class="anchor" id="line-704"></span></p><p class="line867"></p><pre>"Strang" $00 xx xx "ers" $00 xx xx " in" $00 xx xx " the" $00
<span class="anchor" id="line-705"></span>xx xx " night" $00 xx xx 0A "Ex" $00 xx xx "chang" $00 xx xx
<span class="anchor" id="line-706"></span>"ing" $00 xx xx "glan" $00 xx xx "ces" $00 xx xx
<span class="anchor" id="line-707"></span></pre><span class="anchor" id="line-708"></span><span class="anchor" id="line-709"></span><p class="line874">There may be more than one "SYLT" frame in each tag, but only one with the same language and content descriptor. <span class="anchor" id="line-710"></span><span class="anchor" id="line-711"></span></p><p class="line867"><span class="anchor" id="sec4.11"></span> <span class="anchor" id="line-712"></span>
</p><h2 id="head-31c41e8642534f1854246708af84f7d2c8d39684">4.11. Comments</h2>
<span class="anchor" id="line-713"></span><span class="anchor" id="line-714"></span><p class="line874">This
frame is indended for any kind of full text information that does not
fit in any other frame. It consists of a frame header followed by
encoding, language and content descriptors and is ended with the actual
comment as a text string. Newline characters are allowed in the comment
text string. There may be more than one comment frame in each tag, but
only one with the same language and content descriptor. <span class="anchor" id="line-715"></span><span class="anchor" id="line-716"></span></p><p class="line867"></p><pre><Header for 'Comment', ID: "COMM">
<span class="anchor" id="line-717"></span>Text encoding $xx
<span class="anchor" id="line-718"></span>Language $xx xx xx
<span class="anchor" id="line-719"></span>Short content descrip. <text string according to encoding> $00 (00)
<span class="anchor" id="line-720"></span>The actual text <full text string according to encoding>
<span class="anchor" id="line-721"></span></pre><span class="anchor" id="line-722"></span><span class="anchor" id="line-723"></span><p class="line867"><span class="anchor" id="sec4.12"></span> <span class="anchor" id="line-724"></span>
</p><h2 id="head-d3d2bfba9882a197c1b55a80f52bb676653d3604">4.12. Relative volume adjustment</h2>
<span class="anchor" id="line-725"></span><span class="anchor" id="line-726"></span><p class="line874">This
is a more subjective function than the previous ones. It allows the
user to say how much he wants to increase/decrease the volume on each
channel while the file is played. The purpose is to be able to align
all files to a reference volume, so that you don't have to change the
volume constantly. This frame may also be used to balance adjust the
audio. If the volume peak levels are known then this could be described
with the 'Peak volume right' and 'Peak volume left' field. If
Peakvolume is not known these fields could be left zeroed or, if no
other data follows, be completely omitted. There may only be one "RVAD"
frame in each tag. <span class="anchor" id="line-727"></span><span class="anchor" id="line-728"></span></p><p class="line867"></p><pre><Header for 'Relative volume adjustment', ID: "RVAD">
<span class="anchor" id="line-729"></span>Increment/decrement %00xxxxxx
<span class="anchor" id="line-730"></span>Bits used for volume descr. $xx
<span class="anchor" id="line-731"></span>Relative volume change, right $xx xx (xx ...)
<span class="anchor" id="line-732"></span>Relative volume change, left $xx xx (xx ...)
<span class="anchor" id="line-733"></span>Peak volume right $xx xx (xx ...)
<span class="anchor" id="line-734"></span>Peak volume left $xx xx (xx ...)
<span class="anchor" id="line-735"></span></pre><span class="anchor" id="line-736"></span><span class="anchor" id="line-737"></span><p class="line874">In
the increment/decrement field bit 0 is used to indicate the right
channel and bit 1 is used to indicate the left channel. 1 is increment
and 0 is decrement. <span class="anchor" id="line-738"></span><span class="anchor" id="line-739"></span></p><p class="line874">The
'bits used for volume description' field is normally $10 (16 bits) for
MPEG 2 layer I, II and III and MPEG 2.5. This value may not be $00. The
volume is always represented with whole bytes, padded in the beginning
(highest bits) when 'bits used for volume description' is not a
multiple of eight. <span class="anchor" id="line-740"></span><span class="anchor" id="line-741"></span></p><p class="line874">This
datablock is then optionally followed by a volume definition for the
left and right back channels. If this information is appended to the
frame the first two channels will be treated as front channels. In the
increment/decrement field bit 2 is used to indicate the right back
channel and bit 3 for the left back channel. <span class="anchor" id="line-742"></span><span class="anchor" id="line-743"></span></p><p class="line867"></p><pre>Relative volume change, right back $xx xx (xx ...)
<span class="anchor" id="line-744"></span>Relative volume change, left back $xx xx (xx ...)
<span class="anchor" id="line-745"></span>Peak volume right back $xx xx (xx ...)
<span class="anchor" id="line-746"></span>Peak volume left back $xx xx (xx ...)
<span class="anchor" id="line-747"></span></pre><span class="anchor" id="line-748"></span><p class="line874">If
the center channel adjustment is present the following is appended to
the existing frame, after the left and right back channels. The center
channel is represented by bit 4 in the increase/decrease field. <span class="anchor" id="line-749"></span><span class="anchor" id="line-750"></span></p><p class="line867"></p><pre>Relative volume change, center $xx xx (xx ...)
<span class="anchor" id="line-751"></span>Peak volume center $xx xx (xx ...)
<span class="anchor" id="line-752"></span></pre><span class="anchor" id="line-753"></span><span class="anchor" id="line-754"></span><p class="line874">If
the bass channel adjustment is present the following is appended to the
existing frame, after the center channel. The bass channel is
represented by bit 5 in the increase/decrease field. <span class="anchor" id="line-755"></span><span class="anchor" id="line-756"></span></p><p class="line867"></p><pre>Relative volume change, bass $xx xx (xx ...)
<span class="anchor" id="line-757"></span>Peak volume bass $xx xx (xx ...)
<span class="anchor" id="line-758"></span></pre><span class="anchor" id="line-759"></span><span class="anchor" id="line-760"></span><p class="line867"><span class="anchor" id="sec4.13"></span> <span class="anchor" id="line-761"></span>
</p><h2 id="head-3d14382e1cdc086bc43df0f0b0e63cf0c33f7c64">4.13. Equalisation</h2>
<span class="anchor" id="line-762"></span><span class="anchor" id="line-763"></span><p class="line874">This
is another subjective, alignment frame. It allows the user to predefine
an equalisation curve within the audio file. There may only be one
"EQUA" frame in each tag. <span class="anchor" id="line-764"></span><span class="anchor" id="line-765"></span></p><p class="line867"></p><pre><Header of 'Equalisation', ID: "EQUA">
<span class="anchor" id="line-766"></span>Adjustment bits $xx
<span class="anchor" id="line-767"></span></pre><span class="anchor" id="line-768"></span><span class="anchor" id="line-769"></span><p class="line874">The
'adjustment bits' field defines the number of bits used for
representation of the adjustment. This is normally $10 (16 bits) for
MPEG 2 layer I, II and III and MPEG 2.5. This value may not be $00. <span class="anchor" id="line-770"></span><span class="anchor" id="line-771"></span></p><p class="line874">This
is followed by 2 bytes + ('adjustment bits' rounded up to the nearest
byte) for every equalisation band in the following format, giving a
frequency range of 0 - 32767Hz: <span class="anchor" id="line-772"></span></p><pre>Increment/decrement %x (MSB of the Frequency)
<span class="anchor" id="line-773"></span>Frequency (lower 15 bits)
<span class="anchor" id="line-774"></span>Adjustment $xx (xx ...)
<span class="anchor" id="line-775"></span></pre><span class="anchor" id="line-776"></span><p class="line874">The
increment/decrement bit is 1 for increment and 0 for decrement. The
equalisation bands should be ordered increasingly with reference to
frequency. All frequencies don't have to be declared. The equalisation
curve in the reading software should be interpolated between the values
in this frame. Three equal adjustments for three subsequent
frequencies. A frequency should only be described once in the frame. <span class="anchor" id="line-777"></span><span class="anchor" id="line-778"></span></p><p class="line867">
</p><h2 id="head-5f9be76d443047174b52f89243bbc671d7937fa3">4.14. Reverb</h2>
<span class="anchor" id="line-779"></span><span class="anchor" id="line-780"></span><p class="line874">Yet
another subjective one. You may here adjust echoes of different kinds.
Reverb left/right is the delay between every bounce in ms. Reverb
bounces left/right is the number of bounces that should be made. $FF
equals an infinite number of bounces. Feedback is the amount of volume
that should be returned to the next echo bounce. $00 is 0%, $FF is
100%. If this value were $7F, there would be 50% volume reduction on
the first bounce, 50% of that on the second and so on. Left to left
means the sound from the left bounce to be played in the left speaker,
while left to right means sound from the left bounce to be played in
the right speaker. <span class="anchor" id="line-781"></span><span class="anchor" id="line-782"></span></p><p class="line874">'Premix
left to right' is the amount of left sound to be mixed in the right
before any reverb is applied, where $00 id 0% and $FF is 100%. 'Premix
right to left' does the same thing, but right to left. Setting both
premix to $FF would result in a mono output (if the reverb is applied
symmetric). There may only be one "RVRB" frame in each tag. <span class="anchor" id="line-783"></span><span class="anchor" id="line-784"></span></p><p class="line867"></p><pre><Header for 'Reverb', ID: "RVRB">
<span class="anchor" id="line-785"></span>Reverb left (ms) $xx xx
<span class="anchor" id="line-786"></span>Reverb right (ms) $xx xx
<span class="anchor" id="line-787"></span>Reverb bounces, left $xx
<span class="anchor" id="line-788"></span>Reverb bounces, right $xx
<span class="anchor" id="line-789"></span>Reverb feedback, left to left $xx
<span class="anchor" id="line-790"></span>Reverb feedback, left to right $xx
<span class="anchor" id="line-791"></span>Reverb feedback, right to right $xx
<span class="anchor" id="line-792"></span>Reverb feedback, right to left $xx
<span class="anchor" id="line-793"></span>Premix left to right $xx
<span class="anchor" id="line-794"></span>Premix right to left $xx
<span class="anchor" id="line-795"></span></pre><span class="anchor" id="line-796"></span><span class="anchor" id="line-797"></span><p class="line867"><span class="anchor" id="sec4.15"></span> <span class="anchor" id="line-798"></span>
</p><h2 id="head-70a65d30522ef0d37642224c2a40517ae35b7155">4.15. Attached picture</h2>
<span class="anchor" id="line-799"></span><span class="anchor" id="line-800"></span><p class="line862">This
frame contains a picture directly related to the audio file. Image
format is the MIME type and subtype for the image. In the event that
the MIME media type name is omitted, "image/" will be implied. The
"image/png" or "image/jpeg" picture format should be used when
interoperability is wanted. Description is a short description of the
picture, represented as a terminated textstring. The description has a
maximum length of 64 characters, but may be empty. There may be several
pictures attached to one file, each in their individual "APIC" frame,
but only one with the same content descriptor. There may only be one
picture with the picture type declared as picture type $01 and $02
respectively. There is the possibility to put only a link to the image
file by using the 'MIME type' "-->" and having a complete URL
instead of picture data. The use of linked files should however be used
sparingly since there is the risk of separation of files. <span class="anchor" id="line-801"></span><span class="anchor" id="line-802"></span></p><p class="line867"></p><pre><Header for 'Attached picture', ID: "APIC">
<span class="anchor" id="line-803"></span>Text encoding $xx
<span class="anchor" id="line-804"></span>MIME type <text string> $00
<span class="anchor" id="line-805"></span>Picture type $xx
<span class="anchor" id="line-806"></span>Description <text string according to encoding> $00 (00)
<span class="anchor" id="line-807"></span>Picture data <binary data>
<span class="anchor" id="line-808"></span></pre><span class="anchor" id="line-809"></span><span class="anchor" id="line-810"></span><p class="line874">Picture type: <span class="anchor" id="line-811"></span></p><pre>$00 Other
<span class="anchor" id="line-812"></span>$01 32x32 pixels 'file icon' (PNG only)
<span class="anchor" id="line-813"></span>$02 Other file icon
<span class="anchor" id="line-814"></span>$03 Cover (front)
<span class="anchor" id="line-815"></span>$04 Cover (back)
<span class="anchor" id="line-816"></span>$05 Leaflet page
<span class="anchor" id="line-817"></span>$06 Media (e.g. lable side of CD)
<span class="anchor" id="line-818"></span>$07 Lead artist/lead performer/soloist
<span class="anchor" id="line-819"></span>$08 Artist/performer
<span class="anchor" id="line-820"></span>$09 Conductor
<span class="anchor" id="line-821"></span>$0A Band/Orchestra
<span class="anchor" id="line-822"></span>$0B Composer
<span class="anchor" id="line-823"></span>$0C Lyricist/text writer
<span class="anchor" id="line-824"></span>$0D Recording Location
<span class="anchor" id="line-825"></span>$0E During recording
<span class="anchor" id="line-826"></span>$0F During performance
<span class="anchor" id="line-827"></span>$10 Movie/video screen capture
<span class="anchor" id="line-828"></span>$11 A bright coloured fish
<span class="anchor" id="line-829"></span>$12 Illustration
<span class="anchor" id="line-830"></span>$13 Band/artist logotype
<span class="anchor" id="line-831"></span>$14 Publisher/Studio logotype
<span class="anchor" id="line-832"></span></pre><span class="anchor" id="line-833"></span><span class="anchor" id="line-834"></span><p class="line867"><span class="anchor" id="sec4.16"></span> <span class="anchor" id="line-835"></span>
</p><h2 id="head-060e0e68febc214cad81328a2baf7fd1ce17b59b">4.16. General encapsulated object</h2>
<span class="anchor" id="line-836"></span><span class="anchor" id="line-837"></span><p class="line874">In
this frame any type of file can be encapsulated. After the header,
'Frame size' and 'Encoding' follows 'MIME type' represented as as a
terminated string encoded with ISO-8859-1. The filename is case
sensitive and is encoded as 'Encoding'. Then follows a content
description as terminated string, encoded as 'Encoding'. The last thing
in the frame is the actual object. The first two strings may be
omitted, leaving only their terminations. There may be more than one
"GEOB" frame in each tag, but only one with the same content
descriptor. <span class="anchor" id="line-838"></span><span class="anchor" id="line-839"></span></p><p class="line867"></p><pre><Header for 'General encapsulated object', ID: "GEOB">
<span class="anchor" id="line-840"></span>Text encoding $xx
<span class="anchor" id="line-841"></span>MIME type <text string> $00
<span class="anchor" id="line-842"></span>Filename <text string according to encoding> $00 (00)
<span class="anchor" id="line-843"></span>Content description $00 (00)
<span class="anchor" id="line-844"></span>Encapsulated object <binary data>
<span class="anchor" id="line-845"></span></pre><span class="anchor" id="line-846"></span><span class="anchor" id="line-847"></span><p class="line867"><span class="anchor" id="sec4.17"></span> <span class="anchor" id="line-848"></span>
</p><h2 id="head-b31a15058cdc13a61e13ab109c25782bc3387075">4.17. Play counter</h2>
<span class="anchor" id="line-849"></span><span class="anchor" id="line-850"></span><p class="line874">This
is simply a counter of the number of times a file has been played. The
value is increased by one every time the file begins to play. There may
only be one "PCNT" frame in each tag. When the counter reaches all
one's, one byte is inserted in front of the counter thus making the
counter eight bits bigger. The counter must be at least 32-bits long to
begin with. <span class="anchor" id="line-851"></span><span class="anchor" id="line-852"></span></p><p class="line867"></p><pre><Header for 'Play counter', ID: "PCNT">
<span class="anchor" id="line-853"></span>Counter $xx xx xx xx (xx ...)
<span class="anchor" id="line-854"></span></pre><span class="anchor" id="line-855"></span><span class="anchor" id="line-856"></span><p class="line867"><span class="anchor" id="sec4.18"></span> <span class="anchor" id="line-857"></span>
</p><h2 id="head-2452ec9cf8b42c5c117b518b69e129ff67970852">4.18. Popularimeter</h2>
<span class="anchor" id="line-858"></span><span class="anchor" id="line-859"></span><p class="line874">The
purpose of this frame is to specify how good an audio file is. Many
interesting applications could be found to this frame such as a
playlist that features better audiofiles more often than others or it
could be used to profile a person's taste and find other 'good' files
by comparing people's profiles. The frame is very simple. It contains
the email address to the user, one rating byte and a four byte play
counter, intended to be increased with one for every time the file is
played. The email is a terminated string. The rating is 1-255 where 1
is worst and 255 is best. 0 is unknown. If no personal counter is
wanted it may be omitted. When the counter reaches all one's, one byte
is inserted in front of the counter thus making the counter eight bits
bigger in the same away as the play counter ("PCNT"). There may be more
than one "POPM" frame in each tag, but only one with the same email
address. <span class="anchor" id="line-860"></span><span class="anchor" id="line-861"></span></p><p class="line867"></p><pre><Header for 'Popularimeter', ID: "POPM">
<span class="anchor" id="line-862"></span>Email to user <text string> $00
<span class="anchor" id="line-863"></span>Rating $xx
<span class="anchor" id="line-864"></span>Counter $xx xx xx xx (xx ...)
<span class="anchor" id="line-865"></span></pre><span class="anchor" id="line-866"></span><span class="anchor" id="line-867"></span><p class="line867"><span class="anchor" id="sec4.19"></span> <span class="anchor" id="line-868"></span>
</p><h2 id="head-85933b08aab499dc462e7c09752076c92e80f567">4.19. Recommended buffer size</h2>
<span class="anchor" id="line-869"></span><span class="anchor" id="line-870"></span><p class="line874">Sometimes
the server from which a audio file is streamed is aware of transmission
or coding problems resulting in interruptions in the audio stream. In
these cases, the size of the buffer can be recommended by the server
using this frame. If the 'embedded info flag' is true (1) then this
indicates that an ID3 tag with the maximum size described in 'Buffer
size' may occur in the audiostream. In such case the tag should reside
between two MPEG frames, if the audio is MPEG encoded. If the position
of the next tag is known, 'offset to next tag' may be used. The offset
is calculated from the end of tag in which this frame resides to the
first byte of the header in the next. This field may be omitted.
Embedded tags are generally not recommended since this could render
unpredictable behaviour from present software/hardware. <span class="anchor" id="line-871"></span><span class="anchor" id="line-872"></span></p><p class="line874">For
applications like streaming audio it might be an idea to embed tags
into the audio stream though. If the clients connects to individual
connections like HTTP and there is a possibility to begin every
transmission with a tag, then this tag should include a 'recommended
buffer size' frame. If the client is connected to a arbitrary point in
the stream, such as radio or multicast, then the 'recommended buffer
size' frame should be included in every tag. Every tag that is picked
up after the initial/first tag is to be considered as an update of the
previous one. E.g. if there is a "TIT2" frame in the first received tag
and one in the second tag, then the first should be 'replaced' with the
second. <span class="anchor" id="line-873"></span><span class="anchor" id="line-874"></span></p><p class="line874">The 'Buffer size' should be kept to a minimum. There may only be one "RBUF" frame in each tag. <span class="anchor" id="line-875"></span><span class="anchor" id="line-876"></span></p><p class="line867"></p><pre><Header for 'Recommended buffer size', ID: "RBUF">
<span class="anchor" id="line-877"></span>Buffer size $xx xx xx
<span class="anchor" id="line-878"></span>Embedded info flag %0000000x
<span class="anchor" id="line-879"></span>Offset to next tag $xx xx xx xx
<span class="anchor" id="line-880"></span></pre><span class="anchor" id="line-881"></span><span class="anchor" id="line-882"></span><p class="line867"><span class="anchor" id="sec4.20"></span> <span class="anchor" id="line-883"></span>
</p><h2 id="head-64778eca1ee53ea0f439602809c142e312669eda">4.20. Audio encryption</h2>
<span class="anchor" id="line-884"></span><span class="anchor" id="line-885"></span><p class="line874">This
frame indicates if the actual audio stream is encrypted, and by whom.
Since standardisation of such encrypion scheme is beyond this document,
all "AENC" frames begin with a terminated string with a URL containing
an email address, or a link to a location where an email address can be
found, that belongs to the organisation responsible for this specific
encrypted audio file. Questions regarding the encrypted audio should be
sent to the email address specified. If a $00 is found directly after
the 'Frame size' and the audiofile indeed is encrypted, the whole file
may be considered useless. <span class="anchor" id="line-886"></span><span class="anchor" id="line-887"></span></p><p class="line874">After
the 'Owner identifier', a pointer to an unencrypted part of the audio
can be specified. The 'Preview start' and 'Preview length' is described
in frames. If no part is unencrypted, these fields should be left
zeroed. After the 'preview length' field follows optionally a datablock
required for decryption of the audio. There may be more than one "AENC"
frames in a tag, but only one with the same 'Owner identifier'. <span class="anchor" id="line-888"></span><span class="anchor" id="line-889"></span></p><p class="line867"></p><pre><Header for 'Audio encryption', ID: "AENC">
<span class="anchor" id="line-890"></span>Owner identifier <text string> $00
<span class="anchor" id="line-891"></span>Preview start $xx xx
<span class="anchor" id="line-892"></span>Preview length $xx xx
<span class="anchor" id="line-893"></span>Encryption info <binary data>
<span class="anchor" id="line-894"></span></pre><span class="anchor" id="line-895"></span><span class="anchor" id="line-896"></span><p class="line867"><span class="anchor" id="sec4.21"></span> <span class="anchor" id="line-897"></span>
</p><h2 id="head-1f5f3f280f04ce712a1d5a3531fb0dd396c6ea9f">4.21. Linked information</h2>
<span class="anchor" id="line-898"></span><span class="anchor" id="line-899"></span><p class="line874">To
keep space waste as low as possible this frame may be used to link
information from another ID3v2 tag that might reside in another audio
file or alone in a binary file. It is recommended that this method is
only used when the files are stored on a CD-ROM or other circumstances
when the risk of file seperation is low. The frame contains a frame
identifier, which is the frame that should be linked into this tag, a
URL field, where a reference to the file where the frame is given, and
additional ID data, if needed. Data should be retrieved from the first
tag found in the file to which this link points. There may be more than
one "LINK" frame in a tag, but only one with the same contents. A
linked frame is to be considered as part of the tag and has the same
restrictions as if it was a physical part of the tag (i.e. only one
"RVRB" frame allowed, whether it's linked or not). <span class="anchor" id="line-900"></span><span class="anchor" id="line-901"></span></p><p class="line867"></p><pre><Header for 'Linked information', ID: "LINK">
<span class="anchor" id="line-902"></span>Frame identifier $xx xx xx
<span class="anchor" id="line-903"></span>URL <text string> $00
<span class="anchor" id="line-904"></span>ID and additional data <text string(s)>
<span class="anchor" id="line-905"></span></pre><span class="anchor" id="line-906"></span><p class="line874">Frames
that may be linked and need no additional data are "IPLS", "MCID",
"ETCO", "MLLT", "SYTC", "RVAD", "EQUA", "RVRB", "RBUF", the text
information frames and the URL link frames. <span class="anchor" id="line-907"></span><span class="anchor" id="line-908"></span></p><p class="line874">The "TXXX", "APIC", "GEOB" and "AENC" frames may be linked with the content descriptor as additional ID data. <span class="anchor" id="line-909"></span><span class="anchor" id="line-910"></span></p><p class="line874">The
"COMM", "SYLT" and "USLT" frames may be linked with three bytes of
language descriptor directly followed by a content descriptor as
additional ID data. <span class="anchor" id="line-911"></span><span class="anchor" id="line-912"></span></p><p class="line867"><span class="anchor" id="sec4.22"></span> <span class="anchor" id="line-913"></span>
</p><h2 id="head-dfd851b017379ad18d434c1a1be6bfb98c16c4ed">4.22. Position synchronisation frame</h2>
<span class="anchor" id="line-914"></span><span class="anchor" id="line-915"></span><p class="line874">This
frame delivers information to the listener of how far into the audio
stream he picked up; in effect, it states the time offset of the first
frame in the stream. The frame layout is: <span class="anchor" id="line-916"></span><span class="anchor" id="line-917"></span></p><p class="line867"></p><pre><Head for 'Position synchronisation', ID: "POSS">
<span class="anchor" id="line-918"></span>Time stamp format $xx
<span class="anchor" id="line-919"></span>Position $xx (xx ...)
<span class="anchor" id="line-920"></span></pre><span class="anchor" id="line-921"></span><p class="line874">Where time stamp format is: <span class="anchor" id="line-922"></span></p><pre>$01 Absolute time, 32 bit sized, using MPEG frames as unit
<span class="anchor" id="line-923"></span>$02 Absolute time, 32 bit sized, using milliseconds as unit
<span class="anchor" id="line-924"></span></pre><span class="anchor" id="line-925"></span><p class="line874">and
position is where in the audio the listener starts to receive, i.e. the
beginning of the next frame. If this frame is used in the beginning of
a file the value is always 0. There may only be one "POSS" frame in
each tag. <span class="anchor" id="line-926"></span><span class="anchor" id="line-927"></span></p><p class="line867"><span class="anchor" id="sec4.23"></span> <span class="anchor" id="line-928"></span>
</p><h2 id="head-d25b79fcb6f0d51c28301e2cd8a1750b061a5bef">4.23. Terms of use frame</h2>
<span class="anchor" id="line-929"></span><span class="anchor" id="line-930"></span><p class="line874">This
frame contains a brief description of the terms of use and ownership of
the file. More detailed information concerning the legal terms might be
available through the "WCOP" frame. Newlines are allowed in the text.
There may only be one "USER" frame in a tag. <span class="anchor" id="line-931"></span><span class="anchor" id="line-932"></span></p><p class="line867"></p><pre><Header for 'Terms of use frame', ID: "USER">
<span class="anchor" id="line-933"></span>Text encoding $xx
<span class="anchor" id="line-934"></span>Language $xx xx xx
<span class="anchor" id="line-935"></span>The actual text <text string according to encoding>
<span class="anchor" id="line-936"></span></pre><span class="anchor" id="line-937"></span><span class="anchor" id="line-938"></span><p class="line867"><span class="anchor" id="sec4.24"></span> <span class="anchor" id="line-939"></span>
</p><h2 id="head-3c67d23d7cfecadd0253293fada37fbba5c6f1e1">4.24. Ownership frame</h2>
<span class="anchor" id="line-940"></span><span class="anchor" id="line-941"></span><p class="line874">The
ownership frame might be used as a reminder of a made transaction or,
if signed, as proof. Note that the "USER" and "TOWN" frames are good to
use in conjunction with this one. The frame begins, after the frame ID,
size and encoding fields, with a 'price payed' field. The first three
characters of this field contains the currency used for the
transaction, encoded according to ISO-4217 alphabetic currency code.
Concatenated to this is the actual price payed, as a numerical string
using "." as the decimal separator. Next is an 8 character date string
(YYYYMMDD) followed by a string with the name of the seller as the last
field in the frame. There may only be one "OWNE" frame in a tag. <span class="anchor" id="line-942"></span><span class="anchor" id="line-943"></span></p><p class="line867"></p><pre><Header for 'Ownership frame', ID: "OWNE">
<span class="anchor" id="line-944"></span>Text encoding $xx
<span class="anchor" id="line-945"></span>Price payed <text string> $00
<span class="anchor" id="line-946"></span>Date of purch. <text string>
<span class="anchor" id="line-947"></span>Seller <text string according to encoding>
<span class="anchor" id="line-948"></span></pre><span class="anchor" id="line-949"></span><span class="anchor" id="line-950"></span><p class="line867"><span class="anchor" id="sec4.25"></span> <span class="anchor" id="line-951"></span>
</p><h2 id="head-5cd03d43fbc0db57aaaf42cd5a2150705f50eada">4.25. Commercial frame</h2>
<span class="anchor" id="line-952"></span><span class="anchor" id="line-953"></span><p class="line874">This
frame enables several competing offers in the same tag by bundling all
needed information. That makes this frame rather complex but it's an
easier solution than if one tries to achieve the same result with
several frames. The frame begins, after the frame ID, size and encoding
fields, with a price string field. A price is constructed by one three
character currency code, encoded according to ISO-4217 alphabetic
currency code, followed by a numerical value where "." is used as
decimal seperator. In the price string several prices may be
concatenated, seperated by a "/" character, but there may only be one
currency of each type. <span class="anchor" id="line-954"></span><span class="anchor" id="line-955"></span></p><p class="line874">The
price string is followed by an 8 character date string in the format
YYYYMMDD, describing for how long the price is valid. After that is a
contact URL, with which the user can contact the seller, followed by a
one byte 'received as' field. It describes how the audio is delivered
when bought according to the following list: <span class="anchor" id="line-956"></span><span class="anchor" id="line-957"></span></p><p class="line867"></p><pre>$00 Other
<span class="anchor" id="line-958"></span>$01 Standard CD album with other songs
<span class="anchor" id="line-959"></span>$02 Compressed audio on CD
<span class="anchor" id="line-960"></span>$03 File over the Internet
<span class="anchor" id="line-961"></span>$04 Stream over the Internet
<span class="anchor" id="line-962"></span>$05 As note sheets
<span class="anchor" id="line-963"></span>$06 As note sheets in a book with other sheets
<span class="anchor" id="line-964"></span>$07 Music on other media
<span class="anchor" id="line-965"></span>$08 Non-musical merchandise
<span class="anchor" id="line-966"></span></pre><span class="anchor" id="line-967"></span><span class="anchor" id="line-968"></span><p class="line874">Next
follows a terminated string with the name of the seller followed by a
terminated string with a short description of the product. The last
thing is the ability to include a company logotype. The first of them
is the 'Picture MIME type' field containing information about which
picture format is used. In the event that the MIME media type name is
omitted, "image/" will be implied. Currently only "image/png" and
"image/jpeg" are allowed. This format string is followed by the binary
picture data. This two last fields may be omitted if no picture is to
attach. <span class="anchor" id="line-969"></span><span class="anchor" id="line-970"></span></p><p class="line867"></p><pre><Header for 'Commercial frame', ID: "COMR">
<span class="anchor" id="line-971"></span>Text encoding $xx
<span class="anchor" id="line-972"></span>Price string <text string> $00
<span class="anchor" id="line-973"></span>Valid until <text string>
<span class="anchor" id="line-974"></span>Contact URL <text string> $00
<span class="anchor" id="line-975"></span>Received as $xx
<span class="anchor" id="line-976"></span>Name of seller <text string according to encoding> $00 (00)
<span class="anchor" id="line-977"></span>Description <text string according to encoding> $00 (00)
<span class="anchor" id="line-978"></span>Picture MIME type <string> $00
<span class="anchor" id="line-979"></span>Seller logo <binary data>
<span class="anchor" id="line-980"></span></pre><span class="anchor" id="line-981"></span><span class="anchor" id="line-982"></span><p class="line867"><span class="anchor" id="sec4.26"></span> <span class="anchor" id="line-983"></span>
</p><h2 id="head-104c980db64c9df28fbaa4ae87e365d50930534d">4.26. Encryption method registration</h2>
<span class="anchor" id="line-984"></span><span class="anchor" id="line-985"></span><p class="line874">To
identify with which method a frame has been encrypted the encryption
method must be registered in the tag with this frame. The 'Owner
identifier' is a null-terminated string with a URL containing an email
address, or a link to a location where an email address can be found,
that belongs to the organisation responsible for this specific
encryption method. Questions regarding the encryption method should be
sent to the indicated email address. The 'Method symbol' contains a
value that is associated with this method throughout the whole tag.
Values below $80 are reserved. The 'Method symbol' may optionally be
followed by encryption specific data. There may be several "ENCR"
frames in a tag but only one containing the same symbol and only one
containing the same owner identifier. The method must be used somewhere
in the tag. See section 3.3.1, flag j for more information. <span class="anchor" id="line-986"></span><span class="anchor" id="line-987"></span></p><p class="line867"></p><pre><Header for 'Encryption method registration', ID: "ENCR">
<span class="anchor" id="line-988"></span>Owner identifier <text string> $00
<span class="anchor" id="line-989"></span>Method symbol $xx
<span class="anchor" id="line-990"></span>Encryption data <binary data>
<span class="anchor" id="line-991"></span></pre><span class="anchor" id="line-992"></span><span class="anchor" id="line-993"></span><p class="line867"><span class="anchor" id="sec4.27"></span> <span class="anchor" id="line-994"></span>
</p><h2 id="head-ba309170decab08b9bcb1ffb6d6974c0bfd1ead3">4.27. Group identification registration</h2>
<span class="anchor" id="line-995"></span><span class="anchor" id="line-996"></span><p class="line862">This
frame enables grouping of otherwise unrelated frames. This can be used
when some frames are to be signed. To identify which frames belongs to
a set of frames a group identifier must be registered in the tag with
this frame. The 'Owner identifier' is a null-terminated string with a
URL containing an email address, or a link to a location where an email
address can be found, that belongs to the organisation responsible for
this grouping. Questions regarding the grouping should be sent to the
indicated email address. The 'Group symbol' contains a value that
associates the frame with this group throughout the whole tag. Values
below $80 are reserved. The 'Group symbol' may optionally be followed
by some group specific data, e.g. a digital signature. There may be
several "GRID" frames in a tag but only one containing the same symbol
and only one containing the same owner identifier. The group symbol
must be used somewhere in the tag. See <a href="#sec3.3.1">section 3.3.1</a>, flag j for more information. <span class="anchor" id="line-997"></span><span class="anchor" id="line-998"></span></p><p class="line867"></p><pre><Header for 'Group ID registration', ID: "GRID">
<span class="anchor" id="line-999"></span>Owner identifier <text string> $00
<span class="anchor" id="line-1000"></span>Group symbol $xx
<span class="anchor" id="line-1001"></span>Group dependent data <binary data>
<span class="anchor" id="line-1002"></span></pre><span class="anchor" id="line-1003"></span><span class="anchor" id="line-1004"></span><p class="line867"><span class="anchor" id="sec4.28"></span> <span class="anchor" id="line-1005"></span>
</p><h2 id="head-6e58a3ef53dd199d9af3dd33d544a39a5343ab3c">4.28. Private frame</h2>
<span class="anchor" id="line-1006"></span><span class="anchor" id="line-1007"></span><p class="line874">This
frame is used to contain information from a software producer that its
program uses and does not fit into the other frames. The frame consists
of an 'Owner identifier' string and the binary data. The 'Owner
identifier' is a null-terminated string with a URL containing an email
address, or a link to a location where an email address can be found,
that belongs to the organisation responsible for the frame. Questions
regarding the frame should be sent to the indicated email address. The
tag may contain more than one "PRIV" frame but only with different
contents. It is recommended to keep the number of "PRIV" frames as low
as possible. <span class="anchor" id="line-1008"></span><span class="anchor" id="line-1009"></span></p><p class="line867"></p><pre><Header for 'Private frame', ID: "PRIV">
<span class="anchor" id="line-1010"></span>Owner identifier <text string> $00
<span class="anchor" id="line-1011"></span>The private data <binary data>
<span class="anchor" id="line-1012"></span></pre><span class="anchor" id="line-1013"></span><span class="anchor" id="line-1014"></span><p class="line867"><span class="anchor" id="sec5"></span> <span class="anchor" id="line-1015"></span>
</p><h1 id="head-c632e49403443283c464955b36911f949bbb2586">5. The unsynchronisation scheme</h1>
<span class="anchor" id="line-1016"></span><span class="anchor" id="line-1017"></span><p class="line874">The
only purpose of the 'unsynchronisation scheme' is to make the ID3v2 tag
as compatible as possible with existing software. There is no use in
'unsynchronising' tags if the file is only to be processed by new
software. Unsynchronisation may only be made with MPEG 2 layer I, II
and III and MPEG 2.5 files. <span class="anchor" id="line-1018"></span><span class="anchor" id="line-1019"></span></p><p class="line874">Whenever
a false synchronisation is found within the tag, one zeroed byte is
inserted after the first false synchronisation byte. The format of a
correct sync that should be altered by ID3 encoders is as follows: <span class="anchor" id="line-1020"></span><span class="anchor" id="line-1021"></span></p><p class="line867"></p><pre>%11111111 111xxxxx
<span class="anchor" id="line-1022"></span></pre><span class="anchor" id="line-1023"></span><span class="anchor" id="line-1024"></span><p class="line874">And should be replaced with: <span class="anchor" id="line-1025"></span><span class="anchor" id="line-1026"></span></p><p class="line867"></p><pre>%11111111 00000000 111xxxxx
<span class="anchor" id="line-1027"></span></pre><span class="anchor" id="line-1028"></span><span class="anchor" id="line-1029"></span><p class="line874">This
has the side effect that all $FF 00 combinations have to be altered, so
they won't be affected by the decoding process. Therefore all the $FF
00 combinations have to be replaced with the $FF 00 00 combination
during the unsynchronisation. <span class="anchor" id="line-1030"></span><span class="anchor" id="line-1031"></span></p><p class="line874">To
indicate usage of the unsynchronisation, the first bit in 'ID3 flags'
should be set. This bit should only be set if the tag contains a, now
corrected, false synchronisation. The bit should only be clear if the
tag does not contain any false synchronisations. <span class="anchor" id="line-1032"></span><span class="anchor" id="line-1033"></span></p><p class="line874">Do
bear in mind, that if a compression scheme is used by the encoder, the
unsynchronisation scheme should be applied *afterwards*. When decoding
a compressed, 'unsynchronised' file, the 'unsynchronisation scheme'
should be parsed first, decompression afterwards. <span class="anchor" id="line-1034"></span><span class="anchor" id="line-1035"></span></p><p class="line874">If
the last byte in the tag is $FF, and there is a need to eliminate false
synchronisations in the tag, at least one byte of padding should be
added. <span class="anchor" id="line-1036"></span><span class="anchor" id="line-1037"></span></p><p class="line867"><span class="anchor" id="sec6"></span> <span class="anchor" id="line-1038"></span>
</p><h1 id="head-2e25d065aae179b2e61ebe76ded3ce201fd6764f">6. Copyright</h1>
<span class="anchor" id="line-1039"></span><span class="anchor" id="line-1040"></span><p class="line874">Copyright © Martin Nilsson 1998. All Rights Reserved. <span class="anchor" id="line-1041"></span><span class="anchor" id="line-1042"></span></p><p class="line874">This
document and translations of it may be copied and furnished to others,
and derivative works that comment on or otherwise explain it or assist
in its implementation may be prepared, copied, published and
distributed, in whole or in part, without restriction of any kind,
provided that a reference to this document is included on all such
copies and derivative works. However, this document itself may not be
modified in any way and reissued as the original document. <span class="anchor" id="line-1043"></span><span class="anchor" id="line-1044"></span></p><p class="line874">The limited permissions granted above are perpetual and will not be revoked. <span class="anchor" id="line-1045"></span><span class="anchor" id="line-1046"></span></p><p class="line874">This
document and the information contained herein is provided on an "AS IS"
basis and THE AUTHORS DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED,
INCLUDING BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE
INFORMATION HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED
WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. <span class="anchor" id="line-1047"></span><span class="anchor" id="line-1048"></span></p><p class="line867"><span class="anchor" id="sec7"></span> <span class="anchor" id="line-1049"></span>
</p><h1 id="head-090c9e5e624f843e946e467f0ad8a1c21aacaa01">7. References</h1>
<span class="anchor" id="line-1050"></span><span class="anchor" id="line-1051"></span><p class="line867"><span class="anchor" id="CDDB"></span> <span class="anchor" id="line-1052"></span>[CDDB] Compact Disc Data Base <a class="http" href="http://www.cddb.com/">http://www.cddb.com</a> <br>
<br>
<span class="anchor" id="line-1053"></span>[ID3v2] Martin Nilsson, <a href="http://www.id3.org/id3v2-00">"ID3v2 informal standard".</a> <br>
<br>
<span class="anchor" id="line-1054"></span><span class="anchor" id="ISO-639-2"></span> <span class="anchor" id="line-1055"></span>[ISO-639-2] ISO/FDIS 639-2. <span class="anchor" id="line-1056"></span>Codes for the representation of names of languages, Part 2: Alpha-3 code. Technical committee / subcommittee: TC 37 / SC 2 <br>
<br>
<span class="anchor" id="line-1057"></span><span class="anchor" id="ISO-4217"></span> <span class="anchor" id="line-1058"></span>[ISO-4217] ISO 4217:1995. <span class="anchor" id="line-1059"></span>Codes for the representation of currencies and funds. Technical committee / subcommittee: TC 68 <br>
<br>
<span class="anchor" id="line-1060"></span><span class="anchor" id="ISO-8859-1"></span> <span class="anchor" id="line-1061"></span>[ISO-8859-1] ISO/IEC DIS 8859-1. <span class="anchor" id="line-1062"></span>8-bit single-byte coded graphic character sets, Part 1: Latin alphabet No. 1. Technical committee / subcommittee: JTC 1 / SC 2 <br>
<br>
<span class="anchor" id="line-1063"></span><span class="anchor" id="ISRC"></span> <span class="anchor" id="line-1064"></span>[ISRC] ISO 3901:1986 <span class="anchor" id="line-1065"></span>International Standard Recording Code (ISRC). Technical committee / subcommittee: TC 46 / SC 9 <br>
<br>
<span class="anchor" id="line-1066"></span><span class="anchor" id="JFIF"></span> <span class="anchor" id="line-1067"></span>[JFIF] JPEG File Interchange Format, version 1.02, <a class="http" href="http://www.w3.org/Graphics/JPEG/jfif.txt">http://www.w3.org/Graphics/JPEG/jfif.txt</a> <br>
<br>
<span class="anchor" id="line-1068"></span><span class="anchor" id="MIME"></span> <span class="anchor" id="line-1069"></span>[MIME]
Freed, N. and N. Borenstein, "Multipurpose Internet Mail Extensions
(MIME) Part One: Format of Internet Message Bodies", RFC 2045, November
1996., <a class="ftp" href="ftp://ftp.isi.edu/in-notes/rfc2045.txt">ftp://ftp.isi.edu/in-notes/rfc2045.txt</a> <br>
<br>
<span class="anchor" id="line-1070"></span><span class="anchor" id="MPEG"></span> <span class="anchor" id="line-1071"></span>[MPEG] ISO/IEC 11172-3:1993. <span class="anchor" id="line-1072"></span>Coding
of moving pictures and associated audio for digital storage media at up
to about 1,5 Mbit/s, Part 3: Audio. Technical committee / subcommittee:
JTC 1 / SC 29 and ISO/IEC 13818-3:1995 Generic coding of moving
pictures and associated audio information, Part 3: Audio. Technical
committee / subcommittee: JTC 1 / SC 29 and ISO/IEC DIS 13818-3 Generic
coding of moving pictures and associated audio information, Part 3:
Audio (Revision of ISO/IEC 13818-3:1995) <br>
<br>
<span class="anchor" id="line-1073"></span><span class="anchor" id="PNG"></span> <span class="anchor" id="line-1074"></span>[PNG] Portable Network Graphics, version 1.0, <a class="http" href="http://www.w3.org/TR/REC-png-multi.html">http://www.w3.org/TR/REC-png-multi.html</a> <br>
<br>
<span class="anchor" id="line-1075"></span><span class="anchor" id="UNICODE"></span> <span class="anchor" id="line-1076"></span>[UNICODE] ISO/IEC 10646-1:1993. <span class="anchor" id="line-1077"></span>Universal
Multiple-Octet Coded Character Set (UCS), Part 1: Architecture and
Basic Multilingual Plane. Technical committee / subcommittee: JTC 1 /
SC 2, <a class="http" href="http://www.unicode.org/">http://www.unicode.org</a> <br>
<br>
<span class="anchor" id="line-1078"></span><span class="anchor" id="URL"></span> <span class="anchor" id="line-1079"></span>[URL] T. Berners-Lee, L. Masinter & M. <a class="nonexistent" href="http://www.id3.org/McCahill">McCahill</a>, "Uniform Resource Locators (URL).", RFC 1738, December 1994., <a class="ftp" href="ftp://ftp.isi.edu/in-notes/rfc1738.txt">ftp://ftp.isi.edu/in-notes/rfc1738.txt</a> <br>
<br>
<span class="anchor" id="line-1080"></span><span class="anchor" id="ZLIB"></span> <span class="anchor" id="line-1081"></span>[ZLIB]
P. Deutsch, Aladdin Enterprises & J-L. Gailly, "ZLIB Compressed
Data Format Specification version 3.3", RFC 1950, May 1996., url:<a class="ftp" href="ftp://ftp.isi.edu/in-notes/rfc1950.txt">ftp://ftp.isi.edu/in-notes/rfc1950.txt</a> <br>
<br>
<span class="anchor" id="line-1082"></span><span class="anchor" id="line-1083"></span></p><p class="line867"><span class="anchor" id="sec8"></span> <span class="anchor" id="line-1084"></span>
</p><h1 id="head-50c2e666f19bdeb915260d8de35bcb5bc35330d6">8. Appendix</h1>
<span class="anchor" id="line-1085"></span><span class="anchor" id="line-1086"></span><p class="line867">
</p><h2 id="head-129376727ebe5309c1de1888987d070288d7c7e7">8.1. Appendix A - Genre List from ID3v1</h2>
<span class="anchor" id="line-1087"></span><span class="anchor" id="line-1088"></span><p class="line874">The following genres is defined in ID3v1 <span class="anchor" id="line-1089"></span></p><pre> 0. Blues
<span class="anchor" id="line-1090"></span> 1. Classic Rock
<span class="anchor" id="line-1091"></span> 2. Country
<span class="anchor" id="line-1092"></span> 3. Dance
<span class="anchor" id="line-1093"></span> 4. Disco
<span class="anchor" id="line-1094"></span> 5. Funk
<span class="anchor" id="line-1095"></span> 6. Grunge
<span class="anchor" id="line-1096"></span> 7. Hip-Hop
<span class="anchor" id="line-1097"></span> 8. Jazz
<span class="anchor" id="line-1098"></span> 9. Metal
<span class="anchor" id="line-1099"></span> 10. New Age
<span class="anchor" id="line-1100"></span> 11. Oldies
<span class="anchor" id="line-1101"></span> 12. Other
<span class="anchor" id="line-1102"></span> 13. Pop
<span class="anchor" id="line-1103"></span> 14. R&B
<span class="anchor" id="line-1104"></span> 15. Rap
<span class="anchor" id="line-1105"></span> 16. Reggae
<span class="anchor" id="line-1106"></span> 17. Rock
<span class="anchor" id="line-1107"></span> 18. Techno
<span class="anchor" id="line-1108"></span> 19. Industrial
<span class="anchor" id="line-1109"></span> 20. Alternative
<span class="anchor" id="line-1110"></span> 21. Ska
<span class="anchor" id="line-1111"></span> 22. Death Metal
<span class="anchor" id="line-1112"></span> 23. Pranks
<span class="anchor" id="line-1113"></span> 24. Soundtrack
<span class="anchor" id="line-1114"></span> 25. Euro-Techno
<span class="anchor" id="line-1115"></span> 26. Ambient
<span class="anchor" id="line-1116"></span> 27. Trip-Hop
<span class="anchor" id="line-1117"></span> 28. Vocal
<span class="anchor" id="line-1118"></span> 29. Jazz+Funk
<span class="anchor" id="line-1119"></span> 30. Fusion
<span class="anchor" id="line-1120"></span> 31. Trance
<span class="anchor" id="line-1121"></span> 32. Classical
<span class="anchor" id="line-1122"></span> 33. Instrumental
<span class="anchor" id="line-1123"></span> 34. Acid
<span class="anchor" id="line-1124"></span> 35. House
<span class="anchor" id="line-1125"></span> 36. Game
<span class="anchor" id="line-1126"></span> 37. Sound Clip
<span class="anchor" id="line-1127"></span> 38. Gospel
<span class="anchor" id="line-1128"></span> 39. Noise
<span class="anchor" id="line-1129"></span> 40. AlternRock
<span class="anchor" id="line-1130"></span> 41. Bass
<span class="anchor" id="line-1131"></span> 42. Soul
<span class="anchor" id="line-1132"></span> 43. Punk
<span class="anchor" id="line-1133"></span> 44. Space
<span class="anchor" id="line-1134"></span> 45. Meditative
<span class="anchor" id="line-1135"></span> 46. Instrumental Pop
<span class="anchor" id="line-1136"></span> 47. Instrumental Rock
<span class="anchor" id="line-1137"></span> 48. Ethnic
<span class="anchor" id="line-1138"></span> 49. Gothic
<span class="anchor" id="line-1139"></span> 50. Darkwave
<span class="anchor" id="line-1140"></span> 51. Techno-Industrial
<span class="anchor" id="line-1141"></span> 52. Electronic
<span class="anchor" id="line-1142"></span> 53. Pop-Folk
<span class="anchor" id="line-1143"></span> 54. Eurodance
<span class="anchor" id="line-1144"></span> 55. Dream
<span class="anchor" id="line-1145"></span> 56. Southern Rock
<span class="anchor" id="line-1146"></span> 57. Comedy
<span class="anchor" id="line-1147"></span> 58. Cult
<span class="anchor" id="line-1148"></span> 59. Gangsta
<span class="anchor" id="line-1149"></span> 60. Top 40
<span class="anchor" id="line-1150"></span> 61. Christian Rap
<span class="anchor" id="line-1151"></span> 62. Pop/Funk
<span class="anchor" id="line-1152"></span> 63. Jungle
<span class="anchor" id="line-1153"></span> 64. Native American
<span class="anchor" id="line-1154"></span> 65. Cabaret
<span class="anchor" id="line-1155"></span> 66. New Wave
<span class="anchor" id="line-1156"></span> 67. Psychadelic
<span class="anchor" id="line-1157"></span> 68. Rave
<span class="anchor" id="line-1158"></span> 69. Showtunes
<span class="anchor" id="line-1159"></span> 70. Trailer
<span class="anchor" id="line-1160"></span> 71. Lo-Fi
<span class="anchor" id="line-1161"></span> 72. Tribal
<span class="anchor" id="line-1162"></span> 73. Acid Punk
<span class="anchor" id="line-1163"></span> 74. Acid Jazz
<span class="anchor" id="line-1164"></span> 75. Polka
<span class="anchor" id="line-1165"></span> 76. Retro
<span class="anchor" id="line-1166"></span> 77. Musical
<span class="anchor" id="line-1167"></span> 78. Rock & Roll
<span class="anchor" id="line-1168"></span> 79. Hard Rock
<span class="anchor" id="line-1169"></span></pre><span class="anchor" id="line-1170"></span><p class="line874">The following genres are Winamp extensions <span class="anchor" id="line-1171"></span><span class="anchor" id="line-1172"></span></p><pre> 80. Folk
<span class="anchor" id="line-1173"></span> 81. Folk-Rock
<span class="anchor" id="line-1174"></span> 82. National Folk
<span class="anchor" id="line-1175"></span> 83. Swing
<span class="anchor" id="line-1176"></span> 84. Fast Fusion
<span class="anchor" id="line-1177"></span> 85. Bebob
<span class="anchor" id="line-1178"></span> 86. Latin
<span class="anchor" id="line-1179"></span> 87. Revival
<span class="anchor" id="line-1180"></span> 88. Celtic
<span class="anchor" id="line-1181"></span> 89. Bluegrass
<span class="anchor" id="line-1182"></span> 90. Avantgarde
<span class="anchor" id="line-1183"></span> 91. Gothic Rock
<span class="anchor" id="line-1184"></span> 92. Progressive Rock
<span class="anchor" id="line-1185"></span> 93. Psychedelic Rock
<span class="anchor" id="line-1186"></span> 94. Symphonic Rock
<span class="anchor" id="line-1187"></span> 95. Slow Rock
<span class="anchor" id="line-1188"></span> 96. Big Band
<span class="anchor" id="line-1189"></span> 97. Chorus
<span class="anchor" id="line-1190"></span> 98. Easy Listening
<span class="anchor" id="line-1191"></span> 99. Acoustic
<span class="anchor" id="line-1192"></span>100. Humour
<span class="anchor" id="line-1193"></span>101. Speech
<span class="anchor" id="line-1194"></span>102. Chanson
<span class="anchor" id="line-1195"></span>103. Opera
<span class="anchor" id="line-1196"></span>104. Chamber Music
<span class="anchor" id="line-1197"></span>105. Sonata
<span class="anchor" id="line-1198"></span>106. Symphony
<span class="anchor" id="line-1199"></span>107. Booty Bass
<span class="anchor" id="line-1200"></span>108. Primus
<span class="anchor" id="line-1201"></span>109. Porn Groove
<span class="anchor" id="line-1202"></span>110. Satire
<span class="anchor" id="line-1203"></span>111. Slow Jam
<span class="anchor" id="line-1204"></span>112. Club
<span class="anchor" id="line-1205"></span>113. Tango
<span class="anchor" id="line-1206"></span>114. Samba
<span class="anchor" id="line-1207"></span>115. Folklore
<span class="anchor" id="line-1208"></span>116. Ballad
<span class="anchor" id="line-1209"></span>117. Power Ballad
<span class="anchor" id="line-1210"></span>118. Rhythmic Soul
<span class="anchor" id="line-1211"></span>119. Freestyle
<span class="anchor" id="line-1212"></span>120. Duet
<span class="anchor" id="line-1213"></span>121. Punk Rock
<span class="anchor" id="line-1214"></span>122. Drum Solo
<span class="anchor" id="line-1215"></span>123. A capella
<span class="anchor" id="line-1216"></span>124. Euro-House
<span class="anchor" id="line-1217"></span>125. Dance Hall
<span class="anchor" id="line-1218"></span></pre><span class="anchor" id="line-1219"></span><span class="anchor" id="line-1220"></span><p class="line867"><span class="anchor" id="sec9"></span> <span class="anchor" id="line-1221"></span>
</p><h1 id="head-ab9d99d0fd7edd520f035105d0b20ac9adebce85">9. Author's Address</h1>
<span class="anchor" id="line-1222"></span><span class="anchor" id="line-1223"></span><p class="line862">Written by <br>
<span class="anchor" id="line-1224"></span><span class="anchor" id="line-1225"></span></p><p class="line862">Martin Nilsson <br>
<span class="anchor" id="line-1226"></span>Rydsven 246 C. 30 <br>
<span class="anchor" id="line-1227"></span>S-584 34 Linkoping <br>
<span class="anchor" id="line-1228"></span>Sweden <br>
<br>
<span class="anchor" id="line-1229"></span>Email: nilsson at id3.org <br>
<br>
<span class="anchor" id="line-1230"></span><span class="anchor" id="line-1231"></span></p><p class="line862">Edited by <br>
<span class="anchor" id="line-1232"></span><span class="anchor" id="line-1233"></span></p><p class="line862">Dirk Mahoney <br>
<span class="anchor" id="line-1234"></span>57 Pechey Street <br>
<span class="anchor" id="line-1235"></span>Chermside Q <br>
<span class="anchor" id="line-1236"></span>Australia 4032 <br>
<br>
<span class="anchor" id="line-1237"></span>Email: dirk at id3.org <br>
<br>
<span class="anchor" id="line-1238"></span><span class="anchor" id="line-1239"></span></p><p class="line862">Johan Sundstrom <br>
<span class="anchor" id="line-1240"></span>Alsttersgatan 5 A. 34 <br>
<span class="anchor" id="line-1241"></span>S-584 35 Linkoping <br>
<span class="anchor" id="line-1242"></span>Sweden <br>
<br>
<span class="anchor" id="line-1243"></span>Email: johan at id3.org <span class="anchor" id="line-1244"></span><span class="anchor" id="bottom"></span></p></div><p id="pageinfo" class="info" dir="ltr" lang="en">id3v2.3.0 (last edited 2006-12-18 06:25:16 by <span title="DanONeill"><a generated="True" href="http://www.id3.org/DanONeill" title="DanONeill">DanONeill</a></span>)</p>
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