[FFmpeg-user] displace filter

[Michael Koch]

Am 04.02.2020 um 11:53 schrieb Paul B Mahol:
> On 2/3/20, Michael Koch <astroelectronic at t-online.de> wrote:
>> Is it correct that the "displace" filter allows only displacements in
>> the [-128 ... +127] range?
>>
> It works only with 8bit pixel formats, so yes.
>
> Locally I have warp filter, which works by specifying 2D warp points
> for distortion, thus not needing to use slow and cumbersome geq
> filter.

Would be nice to add that to FFmpeg.
I've just added some examples (with geq filter) to my book.
http://www.astro-electronic.de/FFmpeg_Book.pdf

Michael