Playing audio from multiple sources (RTSP/SDP)
Posted: 20 Mar 2011 01:53
Hi guys,
My first post here =). I'm having difficulties trying to make VLC play audio from multiple audio sources. Though honestly I'm not sure if VLC even supports it?
SDP:
Notice how there are two audio sources in the SDP, both of them have the same format BUT they are in essence two different files. When I try to play using 'vlc -vvvv rtsp://myserver.com/play', I see two 'SETUP' commands to the rtsp server, one for each audio source WITH different port numbers. Unfortunately, ONLY the FIRST audio source is played. The second audio source is never 'mixed'.
I did a small test, where I blocked the FIRST audio source from streaming for 30 seconds, then I see that VLC buffers the second source, hangs for 30 seconds, and then plays the first source as soon as it starts streaming.
(buffering second source)
(waits for 30 seconds... then plays only first audio source when it begins to stream)
One thing to note is that the RTCP packets are NOT being forwarded to the client (VLC). Does that matter? If not, is it possible to mix the sources using VLC somehow?
Thanks!
My first post here =). I'm having difficulties trying to make VLC play audio from multiple audio sources. Though honestly I'm not sure if VLC even supports it?
SDP:
Code: Select all
v=0
s=Test1
i=Playing around yayy
t=0 0
a=range:npt=now-
m=audio 0 RTP/AVP 99
a=control:setup/audio/aa0cool
a=rtpmap:99 AMR/8000/1
a=fmtp:99 octet-align=1
m=audio 0 RTP/AVP 99
a=control:setup/audio/aa1cool
a=rtpmap:99 AMR/8000/1
a=fmtp:99 octet-align=1I did a small test, where I blocked the FIRST audio source from streaming for 30 seconds, then I see that VLC buffers the second source, hangs for 30 seconds, and then plays the first source as soon as it starts streaming.
(buffering second source)
Code: Select all
....
[0285f4e4] main input debug: Buffering 96%
[0285f4e4] main input debug: Buffering 98%
[0285f4e4] main input debug: Stream buffering done (1202 ms in 960 ms)
[0285f4e4] main input debug: Decoder buffering done in 0 msOne thing to note is that the RTCP packets are NOT being forwarded to the client (VLC). Does that matter? If not, is it possible to mix the sources using VLC somehow?
Thanks!