[FFmpeg-devel] mpeg2ts/udp --> broken display by set-top-box

Diego Biurrun diego
Wed Jan 21 17:18:08 CET 2009

On Wed, Jan 21, 2009 at 05:02:10PM +0100, Alexandre FERRIEUX - FT/RD/SIRP/ASF/SOFTL wrote:
> I am now using ffmpeg to stream video to a set-top-box:
> ./ffmpeg -i 134.wmv -vcodec mpeg2video -acodec mp2 -f mpegts 
> udp://HOST:PORT\?pkt_size=1316
> What I see on the TV is a sequence of chunks of correct video and 
> (somewhat shorter) correct sound.
> Of course I first thought about a problem in the bitstream or TS muxer, 
> but... if I receive the same UDP flow and concatenate the contents in a 
> .ts file, that file is played perfectly by mplayer/ffplay/vlc.
> Any idea of some "slightly non-standard" parameter in the mpeg2 encoders 
> or muxer that would upset a dumb set-to-box ? Or of a well-known bug in 
> dumb set-to-boxes ?

This is a question for ffmpeg-user.


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