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Allow reading Exif metadata from AVIF images

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Assessment

Difficulty
3/5
Estimated time
1-2 days
Newbie friendliness
45/100
Issue type
Feature
Clarity
Mostly clear
Activity status
Stale
Tech stack
rust

Research direction

Start by reading the AVIF handling around AvifContext in mp4parse, then compare it with the Exif-writing code in avif-serialize's src/lib.rs at the referenced lines. Done means exposing a function that retrieves Exif metadata from AvifContext for callers such as the image crate.

Written by the indexing model from the issue text.

Description

The image crate uses mp4parse to decode AVIF images. I'd like to implement Exif metadata extraction from AVIF there, but mp4parse does not expose a function to retrieve the Exif metadata in AvifContext.

There's already Rust code for writing Exif into AVIF files which can be used as a reference:

https://github.com/kornelski/avif-serialize/blob/f4f4f96e28d0bd8da9e085ec90220708cc49bbbd/src/lib.rs#L214-L231

Adding such a function should be quite straightforward for someone already familiar with the format. I'm not familiar with it at all, which is why I am opening an issue and not a PR.

Dominant language
Rust
Stars
448
Forks
72
Avg merge
20d 3h
Merged PRs (30d)
1

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