Where does it appear to be going word by word to you?
It's sweeping each sentence at a fixed number of milliseconds per character, set so that both languages finish simultaneously. Look at when "Donald Tusk" appears during the first line. Much sooner in English than in Polish, and both are happening before he actually says the name.
The example from the game is doing entire sentences too.
I got caught up in the sci-fi of it all and assumed for some reason that the intended application was a sort of “live” translation. That is, not looking ahead at the whole video. Which of course doesn’t really make sense.
It's sweeping each sentence at a fixed number of milliseconds per character, set so that both languages finish simultaneously. Look at when "Donald Tusk" appears during the first line. Much sooner in English than in Polish, and both are happening before he actually says the name.
The example from the game is doing entire sentences too.