[FFmpeg-user] Use cropdetect only every xth frame

[Carl Eugen Hoyos]

Gerion Entrup <gerion.entrup <at> t-online.de> writes:

> > The select filter should allow you to do this.
> I think, this is not in the way I want it, because 
> ffmpeg decodes every frame and then drop it (or is 
> this wrong?).

You can use -skip_frame (see the documentation).

Carl Eugen