Python to sync a .str subtitles file
Usage: python3 sync-srt.py input_file time_difference
input_file: Must be .srt file
time_difference: HH:MM:SS,000 or -HH:MM:SS,000
Output:
- Backup the original .srt appending "-backup" at the end of filename.
- Rewrite the .str file given using the "time_difference" setting