Even the single language captions are mostly left to software and get it wrong often enough to be useless; youtube used to have a "community captioning" program

Even the single language captions are mostly left to software and get it wrong often enough to be useless; youtube used to have a "community captioning" program, dont know what happened to that. At least on tiktok there's an etiquette of captioning the video yourself so it can be enjoyed on mute. When I pirate a movie I can lookup corresponding .srt files to add captions in any language. Maybe a browser extension that allows people to share caption tracks or alternate audio streams tagged to a video hash or url.