[FFmpeg-user] feature request/suggestion: add support for dolby vision decoding :)

[Phil Rhodes]

> It should be added that both avc and hevc support 12bit 
> encoding...
It's a bit more complicated than just a twelve-bit video signal. Vision uses the 10-bit image as a base and then trims it using the additional data stream, taking into account the capabilities of the display.
Correct display would require knowledge of the capabilities of the display hardware itself, not to mention significant reverse-engineering of Dolby's engineering approach. Most Vision decoders will be built into displays and therefore have that knowledge.
Decoding of Vision to the point where it could be transcoded into other HDR formats is possibly more feasible based on the standards for those formats.
P