I uninstalled it. Needs some companion app. The interface is completely non-intuitive, and I don't want to study some instructions I should search for somewhere, I don't know where, to operate a simple task like that. The worse is that the download is extremely slow, and when it finaly downloads, it puts a watwrmark on the video...
Basically I don't understand how it works from looking at it, and it is excruciatingly slow. I don't understand how Firefox can recommend it?!
There are far, far better extensions for that task, and they are FAST!