[FFmpeg-user] A/V synchronization question

Carl Eugen Hoyos cehoyos at ag.or.at
Thu Aug 21 16:33:07 CEST 2014

Elżbieta Jakubska <elzbieta.jakubska <at> gmail.com> writes:

>  ffmpeg -y -probesize 6000000 -threads 1 -i http://url 
> -vf scale=640:360 -b:v 800k -acodec libmp3lame -b:a 128k 
> -ac 1 -af aresample=async=1000 -ss 0 -threads 1 -t 120 
> -f avi test.avi

Complete, uncut console output missing.

Is your synchronization problem only reproducible if 
you transcode network input or is it also reproducible 
if you first save the http stream (with wget or 
MPlayer or another tool of your choice, not FFmpeg) 
and then transcode the saved stream with FFmpeg?

Note that some developers don't believe in "one half 
frame" A/V desync...

Carl Eugen

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