[FFmpeg-user] filters zoompan and crop
gyandoshi at gmail.com
Mon Oct 29 08:15:31 EET 2018
On Mon, Oct 29, 2018 at 11:38 AM Jim DeLaHunt <list+ffmpeg-user at jdlh.com>
> 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.
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