I don’t think you have a reasonable expectation here.

Companies have to do something to fight this kind of fraud

It's not unreasonable to ask the candidate permission to either record the video interview, or at least have their camera on for 20s while a screenshot is taken.

> then companies are simply baffled why people don’t want to be in video calls!

never had an interviewee decline to be on video call for an interview. Are you trolling ?