[FFmpeg-user] confusion with "-vsync 1" / "-vsync cfr" and "-map" (to sync audio to video)

Carl Eugen Hoyos cehoyos at ag.or.at
Wed Jan 16 23:56:46 CET 2013

JULIAN GARDNER <joolzg <at> btinternet.com> writes:

> I dont know if you remember but this is the same problem 
> i brought up.

I unfortunately don't remember, sorry.

> Channel4 in the UK goes from 5.1 to stereo for commercials, 
> now if i have "-async 1" as a parameter all hell breaks 
> loose and audio goes, if i remove "-aysnc 1" then i get 
> lipsync errors.

Please provide such a sample!

Carl Eugen

PS: In case you already did and I forgot:
Sorry, there are many bugs and I sometimes 
do forget about them;-(

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