[FFmpeg-devel] avcodec/proresaw_enc : improvment (vendor and color properties, 4444Xq)

[Martin Vignali]

> > (alpha 12b encoding is probably
> > easy to add)
>
> Are you sure alpha is 12 bit? As long as I remember, it is 16 bit.
>
>
Alpha is stored in 16b, but like the input pix fmt is 10b or (later) 12b
alpha, the alpha val is shift during encoding to obtain a 16b val.
The right way will be to add yuv444p12_with16bAlpha, but probably not an
easy task to integrate this inside swscale.

Martin