Avif is supported by discourse by quite a while. I have tried avif and it works well generally. But the conversion of avif files does not work well when the avif file contains a photo in a linear profile (at least with rec2020 lineal profile and a 10 bit per channel file). When you upload the pho…

[image] fernando: That is typical of software that does not support lineal profiles. Do you mean linear profiles here?

[image] fernando: It seems that the conversion software that generates the previews does not recognize the embedded linear profile. Indeed, the problem apears to be that Imagemagick only supports embedded profiles in TIFF, JPEG, and PDF. If I open it up using IM I see the same dark image.

Yes I mean linear profiles. The avif file uploaded is in Rec2020 lineal which is included in the image. It seems that the conversion software ignores the gamma curve provided and uses one of its own with gamma applied. It seems it does not support AVIF files correctly. WebP seems to work well. U…

Problems with photo conversion of AVIF format uploaded to discourse

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supermathie (Michael Brown) December 18, 2024, 5:42pm 3

Indeed, the problem apears to be that Imagemagick only supports embedded profiles in TIFF, JPEG, and PDF.

If I open it up using IM I see the same dark image.

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Problems with photo conversion of AVIF format uploaded to discourse

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