Clipgrab 188.8.131.52 had some issue, it is now fixed in the latest release. To install, run these commands in a terminal (Open it with Ctrl–Alt–T ) to install it
sudo apt-add-repository ppa:clipgrab-team/ppa sudo apt-get update
sudo apt-get install clipgrab
Alternative 1: Youtube-dl (CLI tool)
You can try to using “youtube-dl”. It is better than clipgrab in downloading the youtube downloader. To install it, run this command
sudo apt-get install youtube-dl
The downside is youtube-dl is a command line tool.