There is no widely known software or specific technical "feature" under the name "video favoyeur fix." This phrase appears to be a misspelling or a niche term.
The demand for voyeuristic videos creates a profitable black market. Hidden cameras are sold legally as “nanny cams” or “spy pens,” but their misuse is rampant. Online marketplaces on the dark web and even clearnet social media groups facilitate trades of: video favoyeur fix