[FFmpeg-devel] avcodec/prores_ks : use official quant matrix

[Martin Vignali]

> You sure those are actually used in binary?
>
>
luma, chroma matrix in prores is write in each frame.
So i take these values, from a real sample (prores made with official
encoder (and for xq, you can also, compare with arri sample footage)

For the proxy chroma version is also the same matrix use in prores_aw

Martin