Created
March 21, 2023 14:42
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Subtitle (SRT) sync tool in Python
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| # Sync a subtitle file, both for offset and drift | |
| # | |
| # Find the time for the first and last spoken line, both in the audio and subtitles | |
| # Fill in the times, in/out file names and encoding | |
| # Run! | |
| from datetime import timedelta | |
| import srt | |
| from srt import Subtitle | |
| input_file = "input.srt" | |
| output_file = "sync.srt" | |
| encoding = "latin1" | |
| audio_start = timedelta(seconds=24.8) | |
| audio_end = timedelta(seconds=8873.5) | |
| text_start = timedelta(seconds=28.59) | |
| text_end = timedelta(seconds=7109.84) | |
| audio_length = audio_end - audio_start | |
| text_length = text_end - text_start | |
| scaling = audio_length/text_length | |
| def fix(t): | |
| if t < text_start: | |
| return audio_start + t - text_start | |
| else: | |
| return (t-text_start)*scaling + audio_start | |
| with open(input_file, "r", encoding=encoding) as srtfile: | |
| synced = [Subtitle(sub.index, fix(sub.start), fix(sub.end), sub.content) for sub in srt.parse(srtfile)] | |
| with open(output_file, "w") as syncfile: | |
| syncfile.write(srt.compose(synced)) |
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