In the past, this has been a useful and dynamic add-on. It has now been monetized (watermark/stamp on downloaded videos) and requires installation of an external application that is not the git-hub secured version. The "companion app" is basically just FFMPEG, which many have installed by official sources but this official one is not recognized by the add-on. This leads to unnecessary and risky additional apps. Sadly, there are no brave alternatives for websites besides YouTube, Vimeo, etc.

很好用。

It's paid now, what isn't clear when you install.

Great plugin!!!!

Non-functional on Firefox in 2020. Asks for Companion App, but till doesn't work after installing it.

Great add-on.
easiest way to capture and save on-line videos.

You have to install an extra 'companion app' from another source. Very suspicious...

super. work great together with companion app.