[FFmpeg-devel] [PATCH] avfilter/extractplanes: add support for 12-bit YUVA formats

[Carl Eugen Hoyos]

2019-01-17 10:47 GMT+01:00, Gyan <ffmpeg at gyani.pro>:
> Fixes alpha extraction for sample at
>
> https://08488297638989341201.googlegroups.com/attach/85d30cd6b8095/Circle%20Ink%20Bleed_10.mov
>
> as seen in
>
>      ffplay -i in -vf alphaextract

> At present, 16-bit auto-scaled format results in incorrect alpha
> extraction.

Does that mean that there is an unreported bug in the colour
space conversion?

Carl Eugen