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A comment on AVIF support enabled by default in Firefox 86. Parent comment

Re:AVIF support enabled by default in Firefox 86 by astrange on Saturday January 09, 2021 @08:23PM (#25707353)
Really? I don't see any difference, except I do see a pixel shift if I switch between uncompressed/AVIF.

This could happen due to DC shifts (one pixel gets quantized, the rest are coded as a difference from it), or a mistake in the post-decoding pipeline (gamma/colorspace correction).

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Re:AVIF support enabled by default in Firefox 86 by fireattack on Saturday January 09, 2021 @08:26PM (#25707393)
I just modified my comment to make it more clear what I meant.

But you're right, probably just error due to compression/quantization etc. in DC shift or in colorspace conversion. It seems to happen in low quality JPEG too after I did some quick tests myself.

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