Right now rtsp demuxer receives it's ffmpeg specific params encoded in the url
That made the server receiving requests with the url ending with "?udp",
"?multicast" and "?tcp". That may or may not cause problems to servers with
overly strict or overly simple uri parsers

Patch from Armand Bendanan (name.surnameATfreeDOTfr)



git-svn-id: file:///var/local/repositories/ffmpeg/trunk@20363 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b