Auto-caption.

Install.

Install ffmpeg first.

sudo apt install ffmpeg

Install through pypi.

pip3 install auto-caption

Usage.

usage: auto-caption [-h] [--format FORMAT] [--output OUTPUT] video
Automatic captioning for movies.
positional arguments:
video The path of input video
optional arguments:
-h, --help show this help message and exit
--format FORMAT Output format (vtt/srt, default: vtt)
--output OUTPUT The path to write subtitle file

Sample.

Click here to see sample captions generated by this program.