clipgrab (downloading video tool)
ClipGrab is a GPLv3-licensed Open Source project and of course
also available for Linux.
ClipGrab is a free downloader and converter for YouTube, Vimeo,
Metacafe, Dailymotion and many other online video sites, see
more in: http://clipgrab.org/faqs/supported-sites
It converts downloaded videos to MPEG4, MP3 or other formats
in just one easy step.
Now, Clipgrab downloading youtube-dlp as additional component
to downloading videos.
NOTE: for downloading 1080p videos from YouTube a most updated
version of ffmpeg is required.