[FFmpeg-user] cutting at keyframes?

Gregory Aimo gregory.aimo at gmail.com
Thu Aug 2 20:08:01 CEST 2012

Hi Carl,


It does play in sync with quicktime and vlc.  It doesn't play in sync on
flash media server.

On Thu, Aug 2, 2012 at 1:58 PM, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:

> Gregory1234 <gregory.aimo <at> gmail.com> writes:
> > Ultimately I want the output file to start with a keyframe
> > so that it will play in sync - but it appears as if the
> > input file does not start with a keyframe.
> I don't think FFmpeg is able to produce an output file that
> does not start with a keyframe (when encoding which is what
> you do above).
> In other words: I am 100% sure your output file starts with
> a keyframe.
> Is your output file out-of-sync if you play with vlc, ffplay,
> MPlayer or QuickTime? (If it plays out-of-sync with
> QuickTime, please also test the others.)
> Carl Eugen
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