search

mozilla / mp4parse-rust

Parser for ISO Base Media Format aka video/mp4 written in Rust.
Mozilla Public License 2.0
404 stars 62 forks source link

Support `lsel` for decoding progressive image #373

Open tongyuantongyu opened 2 years ago

tongyuantongyu commented 2 years ago

https://github.com/AOMediaCodec/av1-avif/issues/180 changed standard(https://aomediacodec.github.io/av1-avif/#layer-selector-property) to require a lsel box with layer_id set to 0xFFFF in an avif image to allow progressive decoding. Updated test images are yet to be merged: https://github.com/AOMediaCodec/av1-avif/pull/191.

With this change, mp4parse will reject any progressive image due to lsel being a mandatory unsupported box. We should at least be able to decode these images non-progressively.

I hope this can get into Firefox 102 ESR release, or we have to wait very long before being able to safely serve progressive AVIF images.