ID3v2.4 chapter images don't work

[Quppa]

This is an upstream issue in node-id3 v0.2.6, but due to a few hard-coded ID3Version = 3 references, chapter images aren't decoded properly in files with ID3v2.4 tags.

I think the issue might be fixed in the latest code (it's had a big reorganisation since 0.2.6), but unfortunately there's no updated package in npm yet.

I wonder if it's worth trying out node-id3tag, a fork with better ID3v2.4 support, or referencing the latest (unpublished) code from the node-id3 repository somehow. If not, it might be worth adding a warning about ID3v2.4 files to the UI until upstream is updated.

example.zip

[DominikPeters]

Thanks! I've switched to the current code version of node-id3, and your example v2.4 file now appears to be correctly read. I'm not sure what happens on write though. Let me know if something's broken.

[Quppa]

Excellent, thank you.

The exported file is always ID3v2.3. I might open a PR to add a version toggle. There aren't many changes in v2.4 relevant to this tool, but UTF-8 tags are nice (Slack, for example, doesn't like UTF-16 and unfurls MP3 previews as mojibake). Support for v2.4 should be pretty widespread these days - even Windows has supported it since Windows 10 1703.

[DominikPeters]

I just tested node-id3tag and its chapter support appears to be broken (only the last chapter is read). Its commit history ("Prelim support for Chapters") suggests the functionality was never finished.

[DominikPeters]

I reversed the update and went back to the npm version, because the new one had some encoding trouble (in particular, exporting the standard example file that's loaded on startup failed, presumably due to special characters in the train company names).