Locally deployed Flask App (synchronous) for downloading audio files, video files, playlists of both video and audio, from a valid YouTube URL at the best quality out there.

Tested and developed on Ubuntu GNOME 18.04 LTS with Anaconda's Python distro, 3.6.5

• youtube-dl - Used to download the file from the internet.
• ffmpeg - Used for postprocess data, i.e., to convert file from .webm to .mp3 format.

• flask - A micro framework for backend.
• bs4 - For parsing the html document.
• lxml - helps BeautifulSoup while parsing, instead of the defualt slow html parser.

if you don't have them,

pip install flask bs4 lxml

for more instructions on how to install youtube-dl and ffmpeg on your machine visit the YDL repository.