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prologueapp / Prologue

Issue tracker for Prologue, the self-hosted audiobook app.
https://prologue.audio
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No Embedded Chapters Metadata Guide #6

Closed aabeba closed 1 month ago

aabeba commented 2 years ago

This is more related to documentation... But will you update the MP4 and MP3 sections of Metadata Guide? I have looked far and wide for a tool that allows me to edit or even view the chapter metadata in an MP3 file. How on Earth is Prologue able to read chapters from a single MP3 audiobook without a CUE sheet? I can't see any chapter metadata in Windows Explorer, Mp3tag, or anything else. A pointer would be much appreciated.

TheMetalCenter commented 2 years ago

I have looked far and wide for a tool that allows me to edit or even view the chapter metadata in an MP3 file. How on Earth is Prologue able to read chapters from a single MP3 audiobook without a CUE sheet? I can't see any chapter metadata in Windows Explorer, Mp3tag, or anything else. A pointer would be much appreciated.

Prologue is reading id3v2 tags in mp3 files that contain chapter information. Very few programs can read these, ffmpeg is one. This repository provides a working (albeit somewhat convoluted) method to modify them on Windows.

YourMJK commented 1 year ago

Sorry for the late response. I will try to update the wiki soon.

For MP3 files, the CHAP and CTOC (table of contents) tags are used. The latter one is required to be present.

The easiest way I have found (which is also the one I regularly use) to embed chapter metadata in MP3s is by using ffmpeg and a text file in the ffmetadata format.
But I'm sure there are many other tools that can do this as well.