opusmeta is a Rust crate for reading and writing metadata from opus files, created for the multitag project.
See the read_tags
example for basic usage. To run it, type:
cargo run --example read_tags [input_file.opus]
Unlike the more structured ID3 format, the Opus spec does not mandate a common set of tag names or values. However, a list of common tag names can be found here.