slow but steady ... not the fastest, nor the most straightforward, however, can one really complain-- about an add-on/extension that does the job, at no cost to the user and doesn't make my browser crash?
I think not. Recommend: Install the 'companion app'.
Yes, all mp4's will have a watermark or QR code in the upper left hand corner. Many reviews cite this as the reason for giving the app 1-4 stars.. but MIG updates the extension regularly, provides video tutorials & instructions, and is trying to make a living -- hence the $29 charge for the conversion license, which removes the watermark. (Take a look at the list of websites the helper will download video from.. it's exhaustive.) This is not a piece of sh*t add-on.
Kinda ridiculous to review an app on anything but its functionality, in my opinion. If the watermark is an issue, use another extension.