To use these add-ons, you'll need to download Firefox.

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Iceggiren i YouTube Video and Audio Downloader (WebEx)

YouTube Video and Audio Downloader (WebEx) sɣur feller

3,8 n yitran ɣef 5
5
1 071
4
211
3
82
2
80
1
412
Icegger-it netcat
sɣur netcat, prije godinu
Download Not working with Linux.

Seems it just tries to upscale qualitity by conversion - which is indeed quality loss not improvement. Experts know!!