[FFmpeg-user] How to drop every Nth frame?

[Andrey Aleksandrovich]

oh, thanks, but I can't understand syntax of select filer:
Example from manual:
# select one frame every 100
select='not(mod(n,100))'

But how to set - "select 23 frames every 24"?

On 9/21/13, Carl Eugen Hoyos <cehoyos at ag.or.at> wrote:
> Andrey Aleksandrovich writes:
>
>> I have video of 5614 frames total. I need to drop every
>> 24th frame (233 total). So, the resulting video must
>> become 5381 frames.
>> Is it possible with ffmpeg?
>
> Both the select and the fps filter allow this.
> If this is actually an inverse telecine process (for pal
> input), consider using pullup.
>
> Carl Eugen
>
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