[FFmpeg-user] filters zoompan and crop

[Gyan]

On Mon, Oct 29, 2018 at 11:38 AM Jim DeLaHunt <list+ffmpeg-user at jdlh.com>
wrote:

>
>   A zoom
> argument of /k/ is interpreted as if the input image was drawn /k /times
> its original size, or equivalently, that the output image is 1//k/ the
> size of the input image.
>

That should be k^2. A zoom value of 2 crops a window of one-half width and
height, so one-fourth area.

Gyan