[vlc-devel] Re: Can't decode MP4 RTP streams

[Benjamin PRACHT]

On Wed, Feb 09, 2005, Osku Salerma wrote :
> VLC 0.8.1 fails trying to display a RTP-streamed MP4 file. The sending
> side is also VLC 0.8.1 using the following command line:
> 
> vlc --reset-config file:///test.ts --sout "#transcode:rtp" --sout-transcode-vcodec="mp4v" --sout-transcode-vb="384" --sout-transcode-scale="0.25" --sout-rtp-dst="1.2.3.4" --sout-rtp-sdp="file:///test.sdp" --sout-rtp-port-audio="1234" --sout-rtp-port-video="1236" -I dummy
> 
> The streams seem ok, since at least Quicktime plays the stream ok. VLC
> doesn't show any video or audio, just logs errors like this when I try to
> open the test.sdp file:
> 
> ffmpeg error: cannot open encoder
> stream_out_transcode error: cannot find encoder
> access_output_udp debug: mmh, packets in the past (-103755) -> drop
> access_output_udp debug: dropped 1 packets
> access_output_udp debug: mmh, packets in the past (-16800) -> drop
> access_output_udp debug: dropped 1 packets
> access_output_udp debug: mmh, packets in the past (-827466) -> drop
> access_output_udp debug: dropped 1 packets
> access_output_udp debug: mmh, packets in the past (-286322) -> drop
> access_output_udp debug: dropped 1 packets
> access_output_udp debug: mmh, packets in the past (-4789) -> drop
> access_output_udp debug: dropped 1 packets
> access_output_udp debug: mmh, packets in the past (-301089) -> drop
> access_output_udp debug: dropped 1 packets
> access_output_udp debug: mmh, packets in the past (-159145) -> drop
> access_output_udp debug: dropped 1 packets
> access_output_udp debug: mmh, packets in the past (-654811) -> drop
> access_output_udp debug: dropped 1 packets
> ...
> 
Do you get that on the client ? A message about an access output on the
receiving VLC seems... strange. If that is on the server, you can try
increase the size of the send buffer (--sout-udp-caching=time in ms).

Could you please also launch the client vlc with the -vvv option and
send us the result ?

-- 
BigBen

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