[FFmpeg-devel] [PATCH] lavc/videotoolboxenc: add hdr10, linear, hlg color transfer function for videotoolboxenc

[Vittorio Giovara]

On Tue, Jul 16, 2019 at 10:29 PM Limin Wang <lance.lmwang at gmail.com> wrote:

> On Tue, Jul 16, 2019 at 09:36:32PM -0400, Rick Kern wrote:
> > Testing for the new transfer functions when compiling for OSX 10.12
> reports
> > the color settings as "yuv420p(tv, bt2020nc/bt2020/reserved)" in ffprobe.
> > Is "reserved" (0) the expected default when the transfer function isn't
> > supported?
> mac 10.13 support:
> kCVImageBufferTransferFunction_SMPTE_ST_2084_PQ
> kCVImageBufferTransferFunction_ITU_R_2100_HLG
>
> OSX 10.14 support:
> kCVImageBufferTransferFunction_Linear
>
> For 10.12, the HAVE_* macros should be detected as 0 if correct.
>

0 is a reserved value in the color specification and should be avoided if
possible.
Would it be possible to fallback on 2 (unknown) when these macros are not
found?
-- 
Vittorio