[FFmpeg-user] remap filter gives only black and white output

Carl Eugen Hoyos ceffmpeg at gmail.com
Wed Nov 22 01:35:25 EET 2017

2017-11-21 23:44 GMT+01:00 Michael Koch <astroelectronic at t-online.de>:
> I've written a C# program to create my own xmap and ymap files for
> the remap filter.
> The geometric distortion in the output video looks as expected. But
> why is the output only black and white?

Sounds like a bug: Do you have pgm files that provide "identity" output?
(Hope this is the right word: Files that do not change the input.)

Workaround is probably to use the format filter.

Carl Eugen

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