[FFmpeg-user] Problem converting from FLV to MP4

[Fernando Martinelli]

2012/7/23 Carl Eugen Hoyos <cehoyos at ag.or.at>

> 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.
>

Ok. However this is happening within one step (in my command above I just
converted from flv to mp4 and the video increased by more than 20s while
the audio has stayed the same. And that *only *happens when I fix the
output fps. Is that a bug?


> Please update to current git head, some of the mentioned filters
> are new.
>

Thanks for the tip. I'll do it and try out the new filters.


>
> Carl Eugen
>
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-- 
Regards/ viele Grüße,
Fernando