[FFmpeg-user] the trim filter

[Paul B Mahol]

On Thu, Jul 4, 2024 at 8:05 PM Mark Filipak <markfilipak.imdb at gmail.com>
wrote:

> Is there some secret to the trim filter?
>
> --filter_complex "split=2[i5][i6],
>   [i5]trim=start_frame=481:end_frame=134047[o5],
>   [i6]trim=start_frame=138745:end_frame=246719[o6],
>   [o5][o6]concat=n=2"
>
> I get "dup=481", instead, and wind up with 20.061708[3..] seconds of black
> frames preceding the
> segment I want, and the frame rate is 19.181 FPS.
>
>
You need to rewrite audio timestamps, otherwise you get 'empty' gaps.


> Thanks -- Mark.
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