[FFmpeg-devel] [PATCH 3/3] vf_colorspace: Add support for smpte 431/432 (dci/display p3) primaries

Kieran O Leary kieran.o.leary at gmail.com
Sun Oct 30 16:06:03 EET 2016


On Sun, Oct 30, 2016 at 7:07 AM, Vittorio Giovara <
vittorio.giovara at gmail.com> wrote:

> Signed-off-by: Vittorio Giovara <vittorio.giovara at gmail.com>
> ---
> I couldn't find any reference to the name of the whitepoint used for 431,
> so I came up with DCI, since it looks like it is only used there.
> Please CC.

Could this patch be used to convert XYZ Digital Cinema Packages to Rec.709?
I've found that converting a DCP to a YUV format in ffmpeg results in
colours and contrast that look different to how the image displays in
EasyDCP player or a cinema screen. IIRC, -vf colorspace doesn't accept XYZ
input, so is there some intermediate step that I could take to achieve this
kind of transformation, or have I just misunderstood the patch?



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