- Apple Silicon M1/M2 toolchain for extracting .SRT subtitles from movies with embedded hard-burned subtitles
- the OCR step is using a modified version of macOCR (forked from https://github.com/xulihang/macOCR); the macos Apple Silicon ARM64 binary is included in the repo as OCR
The workflow sequence run by the do-all.sh script:
- Generate cropped video with
ffmpeg(you'll have to adjust the crop area for your video size) - Generate PNG snapshots (using
ffmpeg ... fps=1— 1 snapshot per second) - Optical Character Recognition using macOCR (Apple Silicon only) outputs JSON file.
- Convert JSON to SRT + normalize and deduplicate using https://github.com/cdown/srt.
- optional: Generate Chinese pinyin and traditional/simplified versions.
- optional: Translate with deepl.
- optional: Merge translation into the final SRT containing Hanzi Simplified + Hanzi Traditional + Pinyin + English.
- this collection of scripts is work in progress and will require tweaking for each specific scenario (the corresponding places that need editing are marked with TODO comments in the code); use at your own risk