OCR-based subtitle extraction from video files
Project description
cshortranslate
OCR-based subtitle extraction from video files. Designed for extracting Chinese subtitles from long drama videos.
Installation
pip install cshortranslate
Usage
cshortranslate video.mp4
cshortranslate video.mp4 -o output.srt
cshortranslate video.mp4 --fps 15 --region "bottom:20"
cshortranslate video.mp4 --preview
Options
| Option | Description |
|---|---|
-o, --output |
Output SRT path (default: <video>.srt) |
--fps |
Frame extraction rate (default: 10) |
--region |
Subtitle region: "bottom:15" for bottom 15%, or "x,y,w,h" in pixels |
--preview |
Show first frame with crop overlay for region selection |
--backend |
Video backend: opencv, pyav, ffmpegcv, degirum |
--batch-size |
Frames to OCR in parallel (default: 1) |
--num-workers |
OCR worker threads (default: 1) |
--min-chars |
Minimum characters to keep (default: 2) |
--min-dur |
Minimum duration in seconds (default: 0.3) |
Requirements
- Python 3.9+
rapidocr-onnxruntimeopencv-pythontqdmnumpy
License
MIT
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