[FFmpeg-devel] [PATCH v2 06/16] swscale/utils: add helper function to infer colorspace metadata

[Michael Niedermayer]

Hi

On Fri, Dec 06, 2024 at 03:32:05PM +0100, Niklas Haas wrote:
> From: Niklas Haas <git at haasn.dev>
> 
> Logic is loosely on equivalent decisions in libplacebo. The basic idea is to try
> and be a bit conservative by treating AVCOL_*_UNSPECIFIED as a no-op, unless the
> other primaries set are non-standard / wide-gamut or HDR. This helps avoid
> unintended or unexpected colorspace conversions, while forcing it in cases where
> we are almost certain it is needed. The major departure from libplacebo semantics
> is that we no default to a 1000:1 contrast ration for SDR displays, instead modelling
> them as idealized devices with an infinite contrast ratio.
> 
> In either case, setting SWS_STRICT overrides this behavior in favor of always
> requiring explicit colorspace metadata.
> ---
>  libswscale/utils.c | 66 ++++++++++++++++++++++++++++++++++++++++++++++
>  libswscale/utils.h |  3 +++
>  2 files changed, 69 insertions(+)

should be ok

thx

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

In fact, the RIAA has been known to suggest that students drop out
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