chapter-make-read.lua - Fails with realistic amount and names for chapters - Works with minimal chapter file

[porg]

Reproduction

1. Installed chapter-make-read.lua by moving it into ~/.config/mpv/scripts/
2. Put sidecar chapter file next to video file:
   • EVM.m4v (49m 28s, no chapters in metadata)
   • EVM.m4v.chp (UTF-8, created with TextEdit)

Result: Chapter loading ✅ works from very minimal but unrealistic chapter file ❌ but fails with realistic chapter file.

✅ Very minimal but unrealistic chapter file

• 4 chapters
• 0:00:00 til 0:40:00
• Chapters max 3 words, ASCII [A-Za-z ] only, no punctuation whatsoever

❌ My realistic chapter file

• 32 chapters
• 0:00:00 til 0:31:37
• Longest line 92 characters (timestamp plus chapter text)
• Used characters: [A-Za-z ] (ASCII only!) and several punctuation characters such as ' " , . : … • & / ( )

Investigation

• Tried a lot of trial and error. Could not find the root cause.
• Performed several test rounds
  • 0. Start with original chapter file
  • 1. Reduce a certain character from the file (e.g. hyphen, dot, colon, ampersand, ...) by find/replace.
  • 2. Save file.
  • 3. Reopen mpv with that file.
  • 4. Quit mpv again
  • Go back to 1. Several times
• Then also tried to cut the maximum line length to e.g. 20 characters.
• Checked that my filestamps are a continuum (no timestamp earlier than the previous timestamp)
• All helped nothing. Was left clueless.

Environment

• macOS 11 Big Sur
• mpv 0.35.0 (installed via brew package manager)

Attachments

Notes

• The .txt extension was only added to be accepted as an attachment on Github
• During playback attempt the respective files were of course renamed to EVM.m4v.chp to act as the sidecar file to EVM.m4v.chp

Files

• EVM-mini-version-works.m4v.chp.txt
• EVM-original-with-punctuation.m4v.chp.txt

[dyphire]

Fix by commit https://github.com/dyphire/mpv-scripts/commit/bc6763e87f3da0467caf12709b5dde85988f8f18, please test whether it works for you.

[porg]

• Works perfectly now, thanks!