[FFmpeg-user] Ignoring errors in transcoding

Carl Eugen Hoyos cehoyos at ag.or.at
Sun Jun 8 19:57:25 CEST 2014

Alexander Borghgraef <alexander.borghgraef.rma <at> gmail.com> writes:

> > What's wrong with:
> > $ ffmpeg -i crapfile.mpg -qscale 2 -mbd 2 out.mpg
> > ?
> Me not knowing what they do?

This is the same as
$ ffmpeg -i crapfile.mpg out.mpg
but with maximum video quality (-qscale 2) and an 
option that allows to use maximum quality in mpeg 
streams (you can get many warnings without -mbd 2).

The reason I asked was that I did not understand 
what your usecase is and that I hoped if you 
explain what's wrong with above line I would 
understand it.
If your original question is simply "my input 
stream has errors, I fear that FFmpeg doesn't 
like input stream with errors, how do I tell 
FFmpeg to transcode such a stream?" then the 
answer is: The default behaviour of FFmpeg is to 
try to conceal the errors visually and continue 

Carl Eugen

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