.... If I put out a video you can surely see they would not believe it ....
Well, yes and no. You have to understand that if someone comes out with un-conventional method, that defies all scientific logic , then ... yes... the "proof" (video or whatever) will be held to a higher standard. UNLIKE if someone were demonstrating a metal detector on a video, then it just flows logically from the easily shown electronic schematics of WHY there should be a "beep",
in the first place. Unlike an LRL (or dowsing, etc...) where no such schematics and electronic rationale exists. NOT that the proponent won't TRY to cast about technical terms (and put some diodes inside). But it doesn't withstand cross-examination of the electronic engineers who dispute that there is no reason that it could perform.
Hence, yes, the standard of proof is going to be held higher for "unconventional" methods. You certainly must understand that. If I said I have a tennis shoe (in which I installed a battery) that can "find gold", and my "proof" was a video I made all-by-myself, then ...... be honest: Wouldn't you be skeptical ?
Your video WOULD be believed if you had 3rd party un-biased persons, who are well-versed in academic protocols to ensure that nothing subliminal was going on. Heck, you don't even need to prove an electronic basis for how-it-works. Just to have various safeguards, and double-blinds going on. Ie.: invite skeptics to be there during the filming, the planting of the target, etc... So that it can be determined if it's random eventual chance, subconscious clues, etc....