[FFmpeg-user] fixed size cropping rectangle, moving in time

Moritz Barsnick barsnick at gmx.net
Tue Dec 16 23:18:11 CET 2014

Hi Sub,

On Tue, Dec 16, 2014 at 22:22:48 +0100, Sub Phil wrote:
> I wish to have a fixed size cropping rectangle, that changes its x-position
> after say 15 sec for an initial x position of say 200 to 100.
> Do I miss some quotes??
> F:\>ffmpeg -i timeC.mp4 -vf "crop=in_w-700:in_h-100:if(lte(t,15),200,100):80" -an -c:v libx264 -preset:v ultrafast "test.mp4"

You should escape each comma using a backslash. Under Windows and under
Unix, as it's for the sake of ffmpeg, not for the shell/cmd.exe. :-)

-vf "crop=in_w-700:in_h-100:if(lte(t\,15)\,200\,100):80"

(Untested by myself under Windows, but I think it should work.)


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