Firefox add-on

3 Easy Ways to Download YouTube Videos in Ubuntu and Other Linux Distributions

Firefox's Video DownloadHelper add-on works fine.

Youtube-dl

https://rg3.github.io/youtube-dl/download.html
- It is based on Python2. Ubuntu 20.04 does not include python2.
What are the Best Youtube Video Downloader for Ubuntu
The Best YouTube Downloader on Linux: youtube-dl, Minutube, ClipGrab
4 Best open source & free YouTube Downloader for Ubuntu Linux

# which youtube-dl
# sudo rm /usr/bin/youtube-dl

# Method 1.
sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl

# Method 2.
sudo pip install --upgrade youtube_dl

# Log out and log in
youtube-dl --version
# 2019.01.02

# Download a youtube playlist
youtube-dl -f mp4 --yes-playlist URL

For videos with 1080p resolution, youtube-dl will download 720p by default. To download 1080p, see this post

# show the available resolutions
youtube-dl -F XXX
# download the desired resolution
youtube-dl -f 137+141 XXXX 
# Note the two numbers 137, 141 is case dependent. They could be 137 & 140.
youtube-dl -f 22 XXX
# if the format 22 is mp4. If I do not specify the format, the mkv file will be downloaded
# But playing mkv file tends to be stuttering with VLC.

~~This assumes Ubuntu has installed avconv; otherwise video(mp4) and audio(m4a) files will be downloaded separately.~~ To install avconv, install the libav-tools package. Note that libav-tools was replaced by ffmpeg in Ubuntu 18.04.

sudo apt-get install ffmpeg

To download mp3 from a Youtube Video (assume libav-tools or ffmpeg has been installed). See more info here.

youtube-dl --extract-audio --audio-format mp3 URL

To convert the video to mp3 format, use soundconverter

sudo apt-get install soundconverter

Play/Download youtube video using mps-youtube

mps-youtube

4k videos samples (vlc v2.1.4 cannot play), FLYING OVER NORWAY
8K videos Yellowstone National Park in 8K 60P, Peru

GUI

youtube-dl-gui

Learning

Tips 1: SMTube

Search and watch Youtube

Tips 2: Pennywise

Open Websites In A Floating, Borderless Window/Picture in picture

Keyboard shortcuts

Keyboard shortcuts for YouTube

j: backward 10 seconds
l: forward 10 seconds
>: Speed up the video playback rate.
<: Slow down the video playback rate.
c: captions
m: mute

Biology

Bypass any restricted youtube video without an extension

http://www.makeuseof.com/tag/bypass-restricted-youtube-video-without-extension/

7 of the Best YouTube Channels for Learning Drums

http://www.makeuseof.com/tag/best-youtube-channels-learn-drums/

Cooking

5 Unique YouTube Cooking Channels Worth Watching

How to find HDR content on YouTube

https://lifehacker.com/how-to-find-hdr-content-on-youtube-1829374364

Add YouTube Player Controls To Your Linux Desktop With browser-mpris2 (Chrome Extension)

https://www.linuxuprising.com/2018/08/add-youtube-player-controls-to-your.html

Live Stream on youtube

5 Relaxing YouTube Channels to Help You Chill Out

https://www.makeuseof.com/tag/relaxing-youtube-channels-chill-out/

Youtube

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