This is an app that uses the Bytescout SDK -- bytescout[.]com/products/developer/screencapturingsdk/screencapturingsdk.html -- together with ffmpeg. It requires .NET 4. It adds the program's folder, a folder in My Documents, & a folder in Users\ [UserName]\ AppData\ Roaming\. It also adds a bit over 1000 new registry entries.
The reason I took a look at it frankly was because some folks were having trouble activating the GOTD. I didn't see anything out of the ordinary recording the install & later running Activate.exe to activate or register the software. Activation writes to the user files for the Windows account you're signed into, & writes to the User section of the registry, which shouldn't cause problems [other than needing to activate for all users individually].
If you head over to videohelp.com you find better, both free & paid, which isn't to say this is bad software -- it just doesn't work as efficiently [or as well] as alternatives IMHO. You need something Really efficient [which IMHO tends to rule out .NET], recording to a Really fast codec [IMHO not ffmpeg].