Some browsers have real time subtitles now, I know chrome and edge do from my time on school laptops when I forgot my headphones and they worked pretty well. However my use was for like economics videos and not a war movie or anything with a lot of overlapping sounds
Don’t know your views on closed source browsers but that might be worth looking into :)
i tried to find another post saying this to make a duplicate question joke, but apparently when you type 77% into Voyager it crashes the app lol
https://github.com/aeharding/voyager/issues/1801#issue-2780882871