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

[Andrew Sun]

Andrew Sun <adsun701 <at> gmail.com> writes:

> 
> Phil Rhodes <phil_rhodes <at> rocketmail.com> writes:
> 
> > 
> > > It would also have to be tested against the hardware TV Dolby 
> Vision> decoders for conformance.
> > It strikes me that if we could find examples of material that was 
> available in both Vision and other HDR
> > formats (HLG, HDR10 etc) for which the specs are open, a stab could be 
> made at a reasonably accurate
> > approach to transcoding.
> > It further strikes me that ffmpeg could also create MaxFALL and MaxCLL 
> metadata if it wanted to.
> > P
> 
> You're right about the last point. When FFmpeg is compiled with the
> external x265 library, it can encode HEVC not just with MaxFALL and
> MaxCLL, but also with SMPTE ST 2086 Metadata, to conform to the HDR10
> Media profile. FFmpeg I think can also decode HDR10 Metadata.
> 
> But we need to know how to implement the Dolby Vision decoder to decode 
> the full Dolby Vision bitstreams (both single layer and dual layer)
> without errors to silence.

Just did more research on Dolby Vision via the official website.
On Dolby's website, they have some PDFs about Dolby Vision. It can be
encoded and decoded through dual layer and single layer methods using
HEVC. Will have to contact them for more info.

Andrew Sun