I'm surprised that EaseUS didn't talk up their Videokit's AI features in the ad copy on ther GOTD download page, since that's what, at least potentially sets it apart from the long list of ffmpeg-based video convertors out there. Those AI features include speech to text, for generating subtitles, noise removal, vocal removal, and in the future, background removal. That said, there doesn't appear to be any documentation on how to use that new stuff, so you're on your own.
The downloaded setup file is a downloader, saving the 170MB setup file in the same folder as the downloader you just ran. Once installed however, the size balloons to ~600MB in the program's folder. It would not run in my Win11 VM, so I can't claim to have a complete rundown on what the software adds. There is an installation log in Users\ [UserName]\ AppData\ Local\ Temp\ that shows the individual files that are copied into the program's folder, but it isn't until the program's run and activated that folders are added to Users\ [UserName]\ AppData\ Local & Roaming. The registry gets one key for the app & one for uninstall -- running the app in my regular copy of Win11, Regshot2 recorded one entry suggesting it had a memory heap leak, and there was a new crash dump created for command, though I didn't notice anything but an initial delay once the app was started before it displayed the splash screen. The majority of the other entries recorded by Regshot had to do with Direct Input.