[FFmpeg-user] More issues with the -t option (segment extraction)

[Anatol]

Audio 'frame rate' ==> sample-rate/1024
For 44100hz ==> 44100/1024


On Mon, Sep 23, 2013 at 7:49 AM, Jeanne Rich <jrich at laika.com> wrote:

> I tried the frames:v 10 with the -ss option and my audio was too short.
>
> I've tried it with the audio, but I can't seem to get the correct sample
> count, I've tried it with the atrim and that didn't work either.  Finally I
> tried the trim option and that didn't do anything.
>
> -jeanne
> ----- Original Message -----
> > U can use -frames option to define the exact number of frames to extract.
> > It is possible to define number of frames per stream id (video/audio)  -
> > "-frames:0 900 -frames:1 2586"
> >
> >
> > On Mon, Sep 23, 2013 at 7:31 AM, Jeanne Rich <jrich at laika.com> wrote:
> >
> > > I am trying to extract a segment out of an mjpeg quicktime movie using
> the
> > > -ss and -t options. However, when I do this I get more frames than I
> > > wanted. In this case I am trying to extract 10 frames, the audio is
> short
> > > with with a start_pts that is not 0, and the video is 1 frame too
> long. I
> > > tried using the frames:v option, but when I did that the audio was too
> > > short. Finally I tried the trim filter but that did nothing. I am
> using the
> > > git-head from Friday.
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