[FFmpeg-user] A/V sync issues & more with MediaPortal recording of ClearQAM

Carl Eugen Hoyos cehoyos at ag.or.at
Tue Feb 4 11:03:42 CET 2014

Mr M <redpenguinmail <at> gmail.com> writes:

> "ffmpeg.exe -i FILE.ts -vcodec libxvid -vtag XVID 
> -vf scale=720:480 -aspect 4:3 -maxrate 1200k -b:v 981k 
> -qmin 3 -qmax 5 -bufsize 4096 -deinterlace
> -acodec libmp3lame -b:a 128k -ac 2 -async 1 OUT.avi"

(Completely unrelated: Instead of using "-vf scale -aspect 
-deinterlace" you should use something like "-vf yadif,scale" 
or "-vf yadif,scale,setdar".)

Complete, uncut console output missing.


> VLC can play the file fine also changing sizes during 
> commericals but ffmpeg seems to lose A/V sync the more 
> times it hits a commerical break.

Is this also reproducible without -async 1? If not, please 
remove it.

Please provide a sample that allows to reproduce the problem.

Carl Eugen

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