[vlc] Re: mpeg4 RTSP stream without playback

[Jean-Paul Saman]

What vlc version? What OS ??

Kim Schulz wrote:
> 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? 
> 

This looks like an old bug, but I am not sure.

Gtz,
Jean-Paul Saman.

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