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Based on contribution [m55218](http://wg11.sc29.org/doc_end_user/documents/132_OnLine/wg11/m55218-v1-m55218_MIAF_Progressive_Decoding.docx.zip) (member-only) presented at the last MPEG meeting, it was…
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On https://github.com/AOMediaCodec/libavif/issues/289 @cconcolato suggested the following command line for making the first frame of an AV1 video into the still image for an AVIF:
```
MP4Box -add-…
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After updating to Firefox 90, a lot of the images created with `cavif` do not work anymore. Chrome still shows them.
The archive [Test.zip](https://github.com/kornelski/cavif-rs/files/6829273/Test.z…
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AVIF inherits the notion of image derivation (transformation, grids, overlays) from HEIF and the constraints on so-called "derivation chain" from MIAF (see section 7.3.11.1) which says:
```
A MIAF f…
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Test file: [gradient.zip](https://github.com/gpac/ComplianceWarden/files/6112198/gradient.zip)
Generated with avifenc `v0.9.0` and libaom `2.0.2`, I have independently verified that the color item …
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A versenykiírásban van egy ilyen sor (ctrl+f it):
Maguk az értékek nem változnak körről körre, azok kimenetét el kell menteni. Azaz nem kell minden egyes körben újra kiszámolni az infection(1, ...)…
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Forking discussion of my off-topic suggestions from #128.
WebP and friends are [apparently **not** decoded in hardware](https://www.reddit.com/r/AV1/comments/jz6hkh/can_av1_hardware_decoding_be_use…
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Forking discussion of my off-topic suggestions from #128.
[Comparisons between AVIF and JPEG-XL](https://cloudinary.com/blog/time_for_next_gen_codecs_to_dethrone_jpeg) had some people on the AV1 su…
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MIAF currently specifies:
> For RGB encoding, sRGB should be assumed as indicated by colour_primaries equal to 1, transfer_characteristics equal to 13, matrix_coefficients equal to 0, and full_range_…
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HEIF 2nd Edition Amd1 specifies new property types:
- mdcv: MasteringDisplayColourVolumeBox
- clli : ContentLightLevelBox
- cclv: ContentColourVolumeBox
AVIF current refers to MIAF for the f…