It can be hard to find a site that isn’t shareware spam. Try this list, find a freeware you like that hopefully uses FFMPEG, and bookmark the site for next time you need a pre-vetted list of good tools:
https://www.videohelp.com/software/sections/all-in-one-video-converters
Unless you killed somebody, the statutes of limitations have run.
I still remember the “dumb” tech was AOL warez chatrooms where you interacted with a chat bot to get an email with lists of scene games, movies and other stuff in the traditional multi-RAR parts, and you’d individually request them a few at a time to be emailed. Then you’d move to IRC when you found out could be done faster, or BBSes.
I’ve probably forgotten most of how things worked.