[Live-devel] RTSP implementation of Windows Media Player 9

[Derk-Jan Hartman]

On 03 aug 2004, at 18:42, Laurent Pinchart wrote:
> RTSPClientSession[0x80cf8d8]::incomingRequestHandler1() read 396 bytes:
> DESCRIBE rtsp://172.16.33.128:7070/mp3AudioTest RTSP/1.0
> User-Agent: WMPlayer/9.0.0.2980  
> guid/3300AD50-2C39-46C0-AE0A-64FDCF0F0A88
> Accept: application/sdp
> Accept-Charset: UTF-8, *;q=0.1
> X-Accept-Authentication: NTLM, Digest, Basic
> Accept-Language: fr-BE, *;q=0.1
> CSeq: 1
> Supported: com.microsoft.wm.srvppair, com.microsoft.wm.sswitch,
> com.microsoft.wm.eosmsg, com.microsoft.wm.predstrm
>
> parseRequestString() returned cmdName "DESCRIBE", urlPreSuffix "",  
> urlSuffix
> "mp3AudioTest"
> sending response: RTSP/1.0 200 OK
> CSeq: 1
> Date: Tue, Aug 03 2004 16:36:17 GMT
> Content-Base: rtsp://172.16.33.128:7070/mp3AudioTest/
> Content-Type: application/sdp
> Content-Length: 347
>
> v=0
> o=- 1091550964778272 1 IN IP4 172.16.33.128
> s=Session streamed by "testOnDemandRTSPServer"
> i=mp3AudioTest
> a=tool:LIVE.COM Streaming Media v2004.07.31
> a=type:broadcast
> a=control:*
> t=0 0
> a=x-qt-text-nam:Session streamed by "testOnDemandRTSPServer"
> a=x-qt-text-inf:mp3AudioTest
> m=audio 0 RTP/AVP 14
> c=IN IP4 0.0.0.0
> a=control:track1
> ----------------------------------------------------------------------- 
> -------
>
> Right after that, WMP9 tries the MMS protocol (testOnDemandRTSPServer  
> gets an
> MMS request, seems that WMP9 doesn't understand that rtsp:// means  
> RTSP and
> not MMS), and eventually fails after a timeout, with the following  
> error
> message:
>
> "Windows Media Player cannot play the file because the specified  
> protocol is
> not supported. In the Open URL dialog, try opening the file using a  
> different
> transport protocol (for example, "http:" or "rtsp:")."
>
> Does anyone have any idea what WMP9 dislikes in the DESCRIBE response  
> ? I
> tried with testMP3Streamer which sets the multicast group IP address  
> in the
> SDP connection data (c=), without any luck.

Well, i'm not 100% positive, but as far as i understand it, it only has  
RTSP for ASF/WMV streaming.

DJ


---
Universiteit Twente
Derk-Jan Hartman (d.hartman at student.utwente dot nl)
http://home.student.utwente.nl/d.hartman