[FFmpeg-user] How to filter time dependent

Ulf Zibis Ulf.Zibis at CoSoCo.de
Sat Apr 24 00:23:21 EEST 2021

Am 23.04.21 um 21:20 schrieb Leo Butler via ffmpeg-user:
> I would put the select filters before filter_A, etc., rather than after.
> I would use the concat filter at the end to concatenate the streams.
> Otherwise, out.mp4 ends with 3 parallel video streams.
May be that would work, but I didn't test it, as I was successful with "trim".

> On the other hand, if you have frame information, then you can use
> 'between(n,startframe,endframe)' in place of
> 'between(t,starttime,endtime)'.
> ---
> As a sidenote, for this sort of thing, it would be *really* nice if
> ffplay could display frame numbers (and/or pts) and print them to
> stdout.

+ 1 from my side.


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