Some test URLS:

SVQ3 video: 
  rtsp://cumulus.creative.auckland.ac.nz/~shado/nelson_iv_512k.mov
  rtsp://streamr.hitpops.jp/ngc/mov/m0609.mov 

ASF (audio/video): 
  rtsp://aod.mylisten.com/aod/8/03/069803_0903135.wma
  rtsp://195.246.8.69/dur_pull_hi
  rtsp://195.219.160.200/mcp?chid=25&pid=196&vid=2402201&br=800&tid=1&void=2844&muk=H1J4yFr0mJB
  rtsp://a1174.v26630f.c26630.g.vm.akamaistream.net/7/1174/26630/361/od-video.msn.com/8/mbr/rs_perf_dilana_091206_finale9135.wmv

MP4V-ES/mpeg4-generic(ACC):
  rtsp://vod.nwec.jp/quicktime/505.mov
  rtsp://203.140.68.241:554/hirakataeizou9.mp4

REAL:
  rtsp://213.254.239.61/farm/*/encoder/tagesschau/live1high.rm
  rtsp://64.192.137.105:554/real.amazon-de.eu2/phononet/B/0/0/0/H/W/Y/4/K/S/01.01.rm?cloakport=80,554,7070