Question 1

How to write tags to an MP3 file using Lofty in Rust?

Accepted Answer

Use the tag_writer example from the repository—it demonstrates parsing, modifying, and writing ID3v2 or other tags with command-line options, and you can integrate similar code into your project.

Question 2

Lofty vs taglib for handling audio metadata in Rust?

Accepted Answer

Lofty is Rust-native with no C dependencies, offering safer memory management, while taglib is a C++ library with Rust bindings that might be more mature but less integrated. Lofty supports similar formats but has Rust-specific advantages.

Question 3

Can Lofty edit metadata in M4A or MP4 files?

Accepted Answer

Yes, it supports MP4 files with iTunes-style ilst metadata for reading and writing, as shown in the supported formats table, making it suitable for AAC and similar formats.

Question 4

What are the performance benchmarks for Lofty with large audio collections?

Accepted Answer

The repository includes benchmarks run via 'cargo bench', but specific numbers aren't detailed; generally, Rust's efficiency makes it fast for batch operations, though performance can vary by format.

Question 5

Does Lofty support extracting album art from audio files?

Accepted Answer

Yes, it can handle embedded pictures in formats like ID3v2 and Vorbis Comments, as metadata includes image frames, but you may need to use the custom resolver for advanced manipulation.

Question 6

Is Lofty suitable for building a cross-platform music player app?

Accepted Answer

Yes, its format support and Rust implementation make it a good backend for metadata reading in players, but you'll need to handle audio playback separately and consider the read-only limitations for some tags.

lofty-rs

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