https://github.com/bleggett/subtitle-overlap-fixer

Corrects issues with SRT subtitle files that have been converted from more complex WebVTT format subtitles
https://github.com/bleggett/subtitle-overlap-fixer

Last synced: about 1 month ago
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Corrects issues with SRT subtitle files that have been converted from more complex WebVTT format subtitles

• Host: GitHub
• URL: https://github.com/bleggett/subtitle-overlap-fixer
• Owner: bleggett
• License: gpl-3.0
• Created: 2019-04-08T14:33:15.000Z (over 5 years ago)
• Default Branch: master
• Last Pushed: 2022-09-15T17:02:48.000Z (about 2 years ago)
• Last Synced: 2024-06-20T14:22:06.485Z (5 months ago)
• Language: Go
• Size: 26.4 KB
• Stars: 7
• Watchers: 1
• Forks: 3
• Open Issues: 1
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# subtitle-overlap-fixer

Corrects issues with SRT subtitle files that have been converted from more complex WebVTT format subtitles

Stolen from @nimatrueway's Gist (https://gist.github.com/nimatrueway/4589700f49c691e5413c5b2df4d02f4f) and slightly enhanced for my needs (mostly by adding the functionality to combine lines with overlapping timecodes)

### Problem

Converting WebVTT subtitles to SRT subtitles via ffmpeg like so: `ffmpeg -i yourvttsub.vtt outputsrt.srt` _mostly_ works,

but since WebVTT supports many more timing and layout options than SRT, and `ffmpeg`'s WebVTT implementation [does not comply with the spec](https://trac.ffmpeg.org/ticket/4048), you can end up with a SRT that has a ton of incorrect overlapping timings and lines.

This tiny program attemps to fix those issues.

### What it do

- Removes empty subtitles

- Combines subtitles if the end-time of the previous subtitle overlaps with the start-time of the current subtitle.

- Removes subtitles with very very short duration (<150ms) if they contain what the previous line contains

- Removes first line of a subtitle, if it is the same as the last line of previous subtitle

### Installation/Usage

1. You need a recent version of `go`

2. Clone repo, `cd` to repo folder, run `go build`

3. This will create an executable named `subtitle-overlap-fixer`

4. Run that executable on the SRT file that `ffmpeg` spit out (via `ffmpeg -i test.vtt test.srt`)

    `subtitle-overlap-fixer test.srt`

5. This will back up the original `.srt` with a `.bak` extension, and generate a cleaned SRT file

NOTE: No warranty, express or implied. This works for my specific use-case perfectly, and I couldn't find a better way to solve it.