You-Get - Command-line utility to download media contents from the web
asciinema - Record and share your terminal sessions, the right way. Forget screen recording apps and blurry video. Enjoy a lightweight, purely text-based approach to terminal recording.
CONV. - Convert YouTube video to MP3, GIF or MP4
ttyrec - record from terminal
Softorino YouTube Converter - Download YouTube video & audio. Watch and listen offline
Terminalizer - Terminalizer is a dynamic platform that offers you to record your terminal in a better and instant way.