[FFmpeg-user] Apply EQ Filter at regular intervals

[Gyan]

On Mon, Aug 7, 2017 at 11:41 PM, bubbajacks <
jackgittens-at-yahoo.com at ffmpeg.org> wrote:

> I newbie, please can help, I trying to apply eq filter to change
> brightness/contrast of video every 5 frames, is there easy way to do?
>

So, you want the effect to be applied on every 5th frame only? If so, basic
syntax is

    eq=key1=value1:key2=value2...:enable='not(mod(n+1,5))'