Experimental AVIF bit depth extension #1215
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Allow encoding and decoding images of more than 12 bits, the limit
of the AV1 format. This commit experiments 16-bit AVIF images, made
of one primary lossless 8-bit image and one auxiliary lossy/lossless
bit depth extension 8-bit image. Grids and alpha are supported.
Warning: This feature is experimental and not covered by the current
AVIF specification.
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Superseded by #1572. |
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Allow encoding and decoding images of more than 12 bits, the limit of the AV1 format. This commit experiments 16-bit AVIF images, made of one primary lossless 8-bit image and one auxiliary lossy/lossless bit depth extension 8-bit image. Grids and alpha are supported.
Warning: This feature is experimental and not covered by the current AVIF specification. The AVIF specification change proposal is AOMediaCodec/av1-avif#208.
Parts of this PR and/or TODOs may be implemented into separate PRs before making this one ready for review.