[FFmpeg-user] Problem converting from FLV to MP4

[Carl Eugen Hoyos]

Fernando Martinelli <fernando.martinelli <at> gmail.com> writes:

> > > The output I want:
> > >
> > >    - Video 1 MP4 + Audio 1 + Audio 2
> > >    - Video 2 MP4 + Audio 1 + Audio 2
> >
> > I believe this works with FFmpeg, consider reading about Audio
> > Filters on http://ffmpeg.org/ffmpeg.html
> >
> I did, but did not manage to apply it.. But this is not the main issue, as
> I can do the processing with multiple steps.. The problem is the async
> between audio and video.

While your report may be valid (I did not test yet), as said, 
there will be files where A/V sync is only possible if you do 
everything in one step.
Please update to current git head, some of the mentioned filters 
are new.

Carl Eugen