The case against JPEG XL

Re:The case against JPEG XL by wmf on Sunday September 13, 2026 @10:55PM (#49691365)

I have a lot of basic questions about the CVVDP graph. Is the X axis encoding or decoding speed? Is higher better on the Y axis? What format is Aperture? I assume "aom" is AV1 but it wouldn't hurt to document it.

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Re:The case against JPEG XL by computerbuster on Monday September 14, 2026 @12:21AM (#49691952)

x-axis is encoding speed, Y-axis is BD-rate where higher is better. aperture-alpha is an upcoming encoder from Halide Compression, no more details than that. libaom and SVT-AV1 are both for AVIF; libaom is the AV1 reference encoder.

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Re:The case against JPEG XL by a-french-anon on Monday September 14, 2026 @03:49AM (#49693342)

Wait... SVT-AV1 doesn't support anything else than 4:2:0, right? Kinda biases the comparison here.

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Re:The case against JPEG XL by computerbuster on Saturday September 19, 2026 @06:46PM (#49770747)

Why does that bias the comparison exactly?

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Re:The case against JPEG XL by KingMob on Monday September 14, 2026 @01:58AM (#49692541)

> where higher is better

Bit of a nit, but can you add that as a note to the legends/graphs in the future? As a layperson, it helps us to orient to graphs with unknown metrics.

Thanks for the article, btw!

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Re:The case against JPEG XL by computerbuster on Saturday September 19, 2026 @06:46PM (#49770742)

Will do going forward, thanks for the feedback!

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