Youtube Subtitle Downloader

Youtube Subtitle Downloader downloads subtitles from Youtube videos 
(if those are present) and convert them to SRT format.

Usage: youtubesub.py [-h] [-l] [--language LANGUAGE] [--filename FILENAME]
                     [--filetype {srt,xml}]
                     url

positional arguments:
  url                   URL of the Youtube video

optional arguments:
  -h, --help            show this help message and exit
  -l, --list            list all available languages
  --language LANGUAGE   the ISO language code
  --filename FILENAME   specify the name of subtitle
  --filetype {srt,xml}  specify the output type of subtitle

Example:
python youtubesub.py --filename subtitle --language en http://www.youtube.com/watch?v=5MgBikgcWnY

:copyright: (c) 2014 by Nguyen Dang Minh (www.minhnd.com)
:license: BSD, see LICENSE for more details.

Updated 02/14/2021 to run on Python 3, plus some improvements (Mihai Hanor)