Thread:ThePokegeek5000/@comment-36575600-20190109233144/@comment-31984232-20190113042003

I'm pretty sure the "watermark" means a slight modification on the recording, usually in the corner, that resembles something, for example the logo of the screen recorder used to record the video. Basically them advertising themselves.

An example of a watermark is if you take a US dollar bill (haven't found one on a 1 dollar bill, will use a 5 for the example), hold it up to a light, and you can see a face or the number 5 or something. Used to verify the dollar bill.