PR #20650 opened by Niklas Haas (haasn) URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20650 Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/20650.patch
>From 7f9a5438fe3589eb33189f3f91a32021f6b2326f Mon Sep 17 00:00:00 2001 From: Niklas Haas <[email protected]> Date: Mon, 6 Oct 2025 14:06:30 +0200 Subject: [PATCH] libavfilter/vf_libplacebo: add `temperature` option --- doc/filters.texi | 5 +++++ libavfilter/vf_libplacebo.c | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/doc/filters.texi b/doc/filters.texi index 262e7ad009..5863041d1a 100644 --- a/doc/filters.texi +++ b/doc/filters.texi @@ -16795,6 +16795,11 @@ coefficients for RGB inputs. @item gamma Gamma adjustment, between @code{0.0} and @code{16.0}. Defaults to @code{1.0}. +@item temperature +Color temperature adjustment. Lower values make the output warmer/redder, +down to @code{1667}, while higher values make the output cooler/bluer, up to +@code{25000}. Defaults to @code{6500} (neutral white). + @item cones Cone model to use for color blindness simulation. Accepts any combination of @code{l}, @code{m} and @code{s}. Here are some examples: diff --git a/libavfilter/vf_libplacebo.c b/libavfilter/vf_libplacebo.c index 2b3738c8e0..2d8dd29be0 100644 --- a/libavfilter/vf_libplacebo.c +++ b/libavfilter/vf_libplacebo.c @@ -261,6 +261,7 @@ typedef struct LibplaceboContext { float saturation; float hue; float gamma; + float temperature; /* pl_peak_detect_params */ int peakdetect; @@ -446,6 +447,8 @@ static int update_settings(AVFilterContext *ctx) .saturation = s->saturation, .hue = s->hue, .gamma = s->gamma, + // libplacebo uses a normalized/relative scale for CCT + .temperature = (s->temperature - 6500.0) / 3500.0, }; opts->peak_detect_params = *pl_peak_detect_params( @@ -1723,6 +1726,7 @@ static const AVOption libplacebo_options[] = { { "saturation", "Saturation gain", OFFSET(saturation), AV_OPT_TYPE_FLOAT, {.dbl = 1.0}, 0.0, 16.0, DYNAMIC }, { "hue", "Hue shift", OFFSET(hue), AV_OPT_TYPE_FLOAT, {.dbl = 0.0}, -M_PI, M_PI, DYNAMIC }, { "gamma", "Gamma adjustment", OFFSET(gamma), AV_OPT_TYPE_FLOAT, {.dbl = 1.0}, 0.0, 16.0, DYNAMIC }, + { "temperature", "Color temperature adjustment (kelvin)", OFFSET(temperature), AV_OPT_TYPE_FLOAT, {.dbl = 6500.0}, 1667.0, 25000.0, DYNAMIC }, { "peak_detect", "Enable dynamic peak detection for HDR tone-mapping", OFFSET(peakdetect), AV_OPT_TYPE_BOOL, {.i64 = 1}, 0, 1, DYNAMIC }, { "smoothing_period", "Peak detection smoothing period", OFFSET(smoothing), AV_OPT_TYPE_FLOAT, {.dbl = 100.0}, 0.0, 1000.0, DYNAMIC }, -- 2.49.1 _______________________________________________ ffmpeg-devel mailing list -- [email protected] To unsubscribe send an email to [email protected]
