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Remove gray ICC profile when relabeling to sRGB - #1533
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olivervogel merged 1 commit intoSep 24, 2026
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NativeObjectDecoder relabels a grayscale image as sRGB but kept its gray ICC profile, which then contradicts the pixels. Encoders embed it, and an AVIF written from such an image (YUV420 plus a gray profile) does not decode in Chrome.
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NativeObjectDecoderrelabels a grayscale image as sRGB but kept its gray ICC profile, which then contradicts the pixels. Encoders embed it anyway; an AVIF written from such an image (YUV420 plus a gray profile) does not decode in Chrome.The decoder now drops the ICC profile of a relabeled image when that profile's color space (header bytes 16–19) is
GRAY. Any other profile is left alone.Tests (in
NativeObjectDecoderTest, building a minimal ICC profile in place of a binary fixture):Fixes #1532