[FFmpeg-devel] avcodec/proresdec : add 12b decoding support

[Martin Vignali]

>
> Are all 444(4?) Encodings 12-bit? Also is there a way to verify if your
> file should be decoded as 10 or 12-bit? Or does this code automate this
> detection?
>
>
The auto mode of the patch, only use codec_tag to switch between 10b and
12b, no other value.
I don't think, prores have metadata for encoding precision.

Apple doc say : 444 are 12b and 422 are 10b, so these value by default
seems reasonable to me,
even if the file is not encode with that precision (like using ffmpeg
prores_aw/ks encoder)

Martin