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Should AVIF sequences use the same constraints as HEIC sequences? #211

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leo-barnes opened this issue Feb 28, 2023 · 0 comments

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leo-barnes commented Feb 28, 2023

HEIF has the following requirement under "B.3 HEVC image sequences":

For a track containing an HEVC image sequence, either all samples shall be sync samples or the all_ref_pics_intra field in the CodingConstraintsBox specified in 7.2.3 shall be set to one.

This is to make it easier for dealing with random access in animations and guarantees that all samples are either sync samples or droppable.

It might be too late to add something like this to AVIF, but should potentially be considered for AV2.

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