I'm trying to find a way to transfer ownership of a file in Google Drive to another user. I can share a file with another user, but I can't find a way to transfer ownership of the file. There seem to be solutions out there for Google Docs, Sheets and Slides, but not for normal files like .mp4 or .mov.

Ownership of the file matters for a few reasons, one of them being that the file is counted against the quota of the owner of the file.