Am 03.07.2021 um 15:57 schrieb Alex Christoffer Rasmussen:
thank you for the quick answer
when trying this out I notice 3 things
*1: the original size is kept*
if the starting crop is *crop=h=100 *then using *c crop -1 h 150 *dose
noting and the other way,
What you are trying to do might be impossible. You can send a command to
the crop filter and change the output height, but the next filter might
not accept that you dynamically change the size.
In some cases it works, for example "scale" immediately followed by
"overlay". But in many other cases it doesn't work.
Michael
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