[vlc] mpeg4 RTSP stream without playback

Kim Schulz kim at schulz.dk
Wed Apr 25 15:28:26 CEST 2007


Hi,
Today I was trying to stream an mpeg4 (h264/aac) file via rtsp to vlc, but
the image never showed up.
In the stream statistics I can see that VLC receives a stream with a bitrate 
around 320kb/S which seem correct. I can see the Demuxed number raise to about 10033kB
The SDP I send looks like:
v=0
o=VDP 1097139000 1097144000 IN IP4 10.123.10.30
s=VDP DEMO
t=0 0
c=IN IP4 10.123.10.30
m=video 8890 RTP/AVP 96
a=rtpmap:96 H264/90000
m=audio 8888 RTP/AVP 97
a=rtpmap:97 MP4A-LATM/90000
a=fmtp:97 profile-level-id=1;cpresent=1

The log in vlc does not give much info about why it does not play. Here 
is the output:

main debug: `rtsp://10.123.10.30:9999' gives access `rtsp' demux `' path `10.123.10.30:9999'
main debug: creating demux: access='rtsp' demux='' path='10.123.10.30:9999'
main debug: looking for access_demux module: 1 candidate
live555 debug: RTP subsession 'video/H264'
live555 debug: RTP subsession 'audio/MP4A-LATM'
main debug: selecting program id=0
main debug: using access_demux module "live555"
main debug: looking for a subtitle file in C:\Program Files\VideoLAN\VLC\
main debug: looking for decoder module: 28 candidates
ffmpeg debug: libavcodec already initialized
ffmpeg debug: postprocessing disabled
ffmpeg debug: ffmpeg codec (h264) started
main debug: using decoder module "ffmpeg"
main debug: looking for packetizer module: 17 candidates
main debug: using packetizer module "packetizer_h264"
main debug: thread 4332 (decoder) created at priority 0 (input/decoder.c:159)
main debug: looking for decoder module: 28 candidates
main debug: using decoder module "faad"
main debug: thread 4192 (decoder) created at priority 2 (input/decoder.c:159)
main debug: `rtsp://10.123.10.30:9999' successfully opened
live555 debug: lost 58 bytes
live555 debug: increasing buffer size to 131072
faad warning: Invalid number of channels
live555 debug: lost 18 bytes
live555 debug: increasing buffer size to 262144
faad warning: Invalid number of channels
live555 debug: lost 23 bytes
live555 debug: increasing buffer size to 524288
faad warning: Pulse coding not allowed in short blocks
packetizer_h264 warning: waiting for SPS/PPS
live555 debug: lost 28 bytes
live555 debug: increasing buffer size to 1048576
faad warning: Channel coupling not yet implemented
packetizer_h264 warning: waiting for SPS/PPS
packetizer_h264 warning: waiting for SPS/PPS


kan anyone see what is wrong? 

-- 
Kim Schulz

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