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pytubez 11.4

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pytube
pytube is a very serious, lightweight, dependency-free Python library (and
command-line utility) for downloading YouTube Videos.
Documentation
Detailed documentation about how to use the library can be found on
pytube.io. This is recommended
for most use cases. If you just want to quickly download a single video,
the quickstart guide below might be what you're looking for.
Description
YouTube is the most popular video-sharing platform in the world and as a hacker
you may encounter a situation where you want to script something to download
videos. For this I present to you pytube.
pytube is a lightweight library written in Python. It has no third party
dependencies and aims to be highly reliable.
pytube also makes pipelining easy, allowing you to specify callback functions
for different download events, such as on progress or on complete.
Finally pytube also includes a command-line utility, allowing you to quickly
download videos right from terminal.
Features

Support for both progressive & DASH streams
Support for downloading complete playlist
Easily register on_download_progress & on_download_complete callbacks
Command-line interfaced included
Caption track support
Outputs caption tracks to .srt format (SubRip Subtitle)
Ability to capture thumbnail URL
Extensively documented source code
No third-party dependencies

Quickstart
This guide is only meant to cover the most basic usage of the library. For more
detailed information, please refer to pytube.io.
Installation
Pytube requires an installation of python 3.6 or greater, as well as pip.
Pip is typically bundled with python installations, and you can find options
for how to install python at https://python.org.
To install from pypi with pip:
$ python -m pip install pytube

Sometime, the pypi release becomes slightly outdated. To install from the
source with pip:
$ python -m pip install git+https://github.com/pytube/pytube

Using pytube in a python script
To download a video using the library in a script, you'll need to first import
the YouTube class from the library, and pass it an argument of the video url.
From there, you can access the streams and download them.
>>> from pytube import YouTube
>>> YouTube('https://youtu.be/2lAe1cqCOXo').streams.first().download()
>>> yt = YouTube('http://youtube.com/watch?v=2lAe1cqCOXo')
>>> yt.streams
... .filter(progressive=True, file_extension='mp4')
... .order_by('resolution')
... .desc()
... .first()
... .download()

Using the command-line interface
Using the CLI is extremely straightforward as well. To download a video at the
highest progressive quality, you can use the following command:
$ pytube https://youtube.com/watch?v=2lAe1cqCOXo

You can also do the same for a playlist:
$ pytube https://www.youtube.com/playlist?list=PLS1QulWo1RIaJECMeUT4LFwJ-ghgoSH6n