Bait and Switch
I have never reviewed a Add-On before. I have enjoyed a lot of great ones, suffered some lame ones but this is a bait and switch scam and I am frankly shocked that Mozilla would permit it on their site. Nowhere in the description does it warn that:
A. It requires you to install a downloaded .EXE, from somewhere other than Mozilla, that gets flagged by Microsoft Defender as: “This program has potentially unwanted behavior.”
B. It puts a big QR code watermark on your video unless you pay $28 for the licensed version.
If you read the other one star reviews you will get the same story, the truth. It does work, albeit slowly, and does have memory leaks.
They even got tossed off PayPal so you have to use your credit card. Nah.