Hi, I'm in the process of creating an RTSP client and have run into problems with connecting to the BBC's radio stations. Like vlc, I am using the livemedia libraries to provide rtsp support and have done a fair amount of work getting my client to receive mms streams via RTSP. Both vlc and my RTSP client can connect to most mms urls if you change the "mms://" to "rtsp://", but have problems downloading particular BBC radio stations in this way. So I was wondering if anyone can shed any light on the problems that I'm having.

<br><br>I'm having problems when trying to connect to some BBC Radio WMA streams via rtsp. My current setup is:<br><br>Ubuntu 7.04 (Feisty Fawn), VLC media player 0.8.6 Janus.<br><br>And my problem is:<br><br>running:

<br>vlc mms://wmlive.bbc.co.uk/wms/bbc7/hi_s1<br>succeeds in connecting to and playing the bbc radio stream.<br><br>However when i run:<br>vlc rtsp://wmlive.bbc.co.uk/wms/bbc7/hi_s1<br>vlc fails to connect and i get the following result:

<br><br>------------------------------------------------------------------------------<br><br>VLC media player 0.8.6 Janus<br>Sending request: OPTIONS rtsp://wmlive.bbc.co.uk/wms/bbc7/hi_s1 RTSP/1.0<br>CSeq: 1<br>User-Agent: VLC media player (LIVE555 Streaming Media 

v2006.03.16)<br><br><br>Received OPTIONS response: RTSP/1.0 200 OK<br>Supported: com.microsoft.wm.srvppair, com.microsoft.wm.sswitch, com.microsoft.wm.eosmsg, com.microsoft.wm.fastcache, com.microsoft.wm.packetpairssrc, com.microsoft.wm.startupprofile

<br>Date: Thu, 13 Sep 2007 07:25:44 GMT<br>CSeq: 1<br>Server: WMServer/9.1.1.3814<br><br><br>Sending request: DESCRIBE rtsp://wmlive.bbc.co.uk/wms/bbc7/hi_s1 RTSP/1.0<br>CSeq: 2<br>Accept: application/sdp<br>User-Agent: VLC media player (LIVE555 Streaming Media 

v2006.03.16)<br><br><br>Received DESCRIBE response: RTSP/1.0 200 OK<br>Content-Type: application/sdp<br>Vary: Accept<br>X-Playlist-Gen-Id: 7239577<br>X-Broadcast-Id: 5581321<br>Content-Length: 4452<br>Date: Thu, 13 Sep 2007 07:25:44 GMT

<br>CSeq: 2<br>Server: WMServer/9.1.1.3814<br>Supported: com.microsoft.wm.srvppair, com.microsoft.wm.sswitch, com.microsoft.wm.eosmsg, com.microsoft.wm.fastcache, com.microsoft.wm.packetpairssrc, com.microsoft.wm.startupprofile

<br>Last-Modified: Sat, 30 Dec 1899 00:00:00 GMT<br>Cache-Control: x-wms-stream-type="broadcast", no-cache, no-user-cache, private<br><br><br>Need to read 4452 extra bytes<br>Read 1049 extra bytes: v=0<br>o=- 200709050605210616 200709050605210616 IN IP4 

<a href="http://127.0.0.1">127.0.0.1</a><br>s=BBC7<br>c=IN IP4 <a href="http://0.0.0.0">0.0.0.0</a><br>b=AS:49<br>a=maxps:2261<br>t=0 0<br>a=control:rtsp://wmlive.bbc.co.uk/wms%5Cbbc7%5Chi_s1/<br>a=etag:{4805447C-964F-4983-1A7B-29FF715BA671}

<br>a=range:npt=3.064-3.064<br>a=type:broadcast<br>a=recvonly<br>a=pgmpu:data:application/x-wms-contentdesc,8,language,31,0,,42,WMS_CONTENT_DESCRIPTION_PLAYLIST_ENTRY_URL,31,1,/,58,WMS_CONTENT_DESCRIPTION_COPIED_METADATA_FROM_PLAYLIST_FILE,3,1,1,47,WMS_CONTENT_DESCRIPTION_PLAYLIST_ENTRY_DURATION,3,1,0,51,WMS_CONTENT_DESCRIPTION_PLAYLIST_ENTRY_START_OFFSET,3,4,3064,5,title,31,4,BBC7,6,author,31,4,BBC7,9,copyright,31,35,%C2%A9%20British%20Broadcasting%20Corporation,35,WMS_CONTENT_DESCRIPTION_DESCRIPTION,31,0,,30,WMS_CONTENT_DESCRIPTION_RATING,31,0,,44,WMS_CONTENT_DESCRIPTION_SERVER_BRANDING_INFO,31,12,WMServer/9.0%0D%0A

<br>a=pgmpu:data:application/vnd.ms.wms-hdr.asfv1;base64,MCaydY5mzxGm2QCqAGLObJUJAAAAAAAABwAAAAECMyaydY5mzxGm2QCqAGLObIAAAAAAAAAACgAKAEYAAgACAEIAQgBDADcAAABCAEIAQwA3AAAAqQAgAEIAcgBpAHQAaQBzAGgAIABCAHIAbwBhAGQAYwBh<br>Read 1048 extra bytes: 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

<br>Read 524 extra bytes: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA

<br>Read 1048 extra bytes: AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAkQfct7epzxGO5gDADCBTZXIAAAAAAAAAQJ5p+E1bzxGo/QCAX1xEK1DNw7+PYc8Ri7IAqgC04iAAAAAAAAAAABwAAAAIAAAAAQAA

<br>Read 524 extra bytes: 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

<br>Read 259 extra bytes: AABHQjg0WRZCQqysqkQyYSbRAAAAAAAAAAABAQ==<br>m=audio 0 RTP/AVP 96<br>b=AS:49<br>b=X-AV:49<br>b=RS:0<br>b=RR:0<br>a=rtpmap:96 x-asf-pf/1000<br>a=control:audio<br>a=stream:1<br>m=application 0 RTP/AVP 96

<br>b=RS:0<br>b=RR:0<br>a=rtpmap:96 x-wms-rtx/1000<br>a=control:rtx<br>a=stream:65536<br><br>Sending request: SETUP rtsp://wmlive.bbc.co.uk/wms/bbc7/hi_s1/audio RTSP/1.0<br>CSeq: 3<br>Transport: RTP/AVP;unicast;client_port=33094-33095

<br>User-Agent: VLC media player (LIVE555 Streaming Media v2006.03.16)<br><br><br>Received SETUP response: RTSP/1.0 400 Bad Request<br>Date: Thu, 13 Sep 2007 07:25:45 GMT<br>CSeq: 3<br>Server: WMServer/9.1.1.3814<br>Supported: 

com.microsoft.wm.srvppair, com.microsoft.wm.sswitch, com.microsoft.wm.eosmsg, com.microsoft.wm.fastcache, com.microsoft.wm.packetpairssrc, com.microsoft.wm.startupprofile<br><br><br>[00000291] live555 demuxer error: SETUP of'audio/X-ASF-PF' failed SETUP: cannot handle response: RTSP/1.0 400 Bad Request

<br>[00000291] live555 demuxer error: Nothing to play for rtsp://wmlive.bbc.co.uk/wms/bbc7/hi_s1<br>[00000289] main input error: no suitable access module for `rtsp://wmlive.bbc.co.uk/wms/bbc7/hi_s1'<br>[00000280] main playlist: nothing to play

<br><br>--------------------------------------------------------------------------<br><br>I get the same result when i try to play rtsp://wmlive.bbc.co.uk/wms/bbc7/hi_s1 with vlc 0.8.6c running on Windows XP.<br><br>Other streams that show the same problem include:

mms://wmlive.bbc.net.uk/wms/radio5/5Live_int_s1 mms://wmlive.bbc.co.uk/wms/1xtra/hi_s1 where simply replacing the "mms://" with "rtsp://" creates a stream that WMP11 can play, but that vlc can not.

What is especially confusing for me is the fact that Windows Media Player 11, running on Windows XP successfully connects, using a very similar pattern of RTSP commands (the messages sent during this exchange are in the attached file). I have tried altering my own RTSP client (which runs on Linux) so that it uses an identical sequence of commands to WMP11, but this still results in 400 errors - I can successfully issue the OPTIONS and DESCRIBE requests and get meainingful responses, yet every time i try to issue a GET_PARAMETER or SETUP request after this, I receive a response of RTSP/1.0 400 Bad Request.

<br><br>My own rtsp client is not able to download mms streams, as I haven't and don't plan to implement mms as it's a deprecated protocol. If anyone could shed any light on this problem, or let me know a place where i might get some answers, then please let me know. (I'm already planning to ask this question to the livemedia developers as well :)

<br><br><br>Thanks heaps,<br>Mark.<br>