Re: [FFmpeg-user] mpdecimate and setpts

2018-02-14 Thread Chen Fisher
Thanks Carl! That works.

On Mon, Feb 12, 2018 at 3:57 PM Carl Eugen Hoyos  wrote:

> 2018-02-12 7:57 GMT+01:00 Chen Fisher :
> > I'm using mpdecimate to remove similar frames:
> > ffmpeg -i in.mp4 -vf mpdecimate out.mp4
> >
> > But the ending result has the same number of frames as the original video
> > file (although smaller file size).
> >
> > When using mpdecimate with setpts, the ending result has indeed smaller
> > frame count and smaller file size than before.
> > BUT, it will also change the time and "skip" those similar frames. I'm
> > looking for a way to remove frames but still have the time as the
> original.
> > So the "duplicate" frame will actually be played for the duration of all
> > removed duplicate frames.
> >
> > ffmpeg -i in.mp4 -vf "mpdecimate,setpts=N/FRAME_RATE/TB" out.mp4
>
> You cannot combine mpdecimate and mov/mp4 output in a useful way
> because our mov/mp4 muxer only supports constant frame rate, this
> is a known limitation of FFmpeg.
> Try mkv.
>
> Carl Eugen
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Re: [FFmpeg-user] mpdecimate and setpts

2018-02-12 Thread Carl Eugen Hoyos
2018-02-12 7:57 GMT+01:00 Chen Fisher :
> I'm using mpdecimate to remove similar frames:
> ffmpeg -i in.mp4 -vf mpdecimate out.mp4
>
> But the ending result has the same number of frames as the original video
> file (although smaller file size).
>
> When using mpdecimate with setpts, the ending result has indeed smaller
> frame count and smaller file size than before.
> BUT, it will also change the time and "skip" those similar frames. I'm
> looking for a way to remove frames but still have the time as the original.
> So the "duplicate" frame will actually be played for the duration of all
> removed duplicate frames.
>
> ffmpeg -i in.mp4 -vf "mpdecimate,setpts=N/FRAME_RATE/TB" out.mp4

You cannot combine mpdecimate and mov/mp4 output in a useful way
because our mov/mp4 muxer only supports constant frame rate, this
is a known limitation of FFmpeg.
Try mkv.

Carl Eugen
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[FFmpeg-user] mpdecimate and setpts

2018-02-11 Thread Chen Fisher
I'm using mpdecimate to remove similar frames:
ffmpeg -i in.mp4 -vf mpdecimate out.mp4

But the ending result has the same number of frames as the original video
file (although smaller file size).

When using mpdecimate with setpts, the ending result has indeed smaller
frame count and smaller file size than before.
BUT, it will also change the time and "skip" those similar frames. I'm
looking for a way to remove frames but still have the time as the original.
So the "duplicate" frame will actually be played for the duration of all
removed duplicate frames.

ffmpeg -i in.mp4 -vf "mpdecimate,setpts=N/FRAME_RATE/TB" out.mp4

Thanks!
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