RainbowSay https://rainbowsay.ai/

I used to watch K-drama on Netflix and pause it to copy paste subtitles in AI chat to do vocabulary breakdown, translation and grammar. So I automated it in an app which auto pauses video when it detects a sentence and gives translation, vocabulary (for every word) and grammar.

I also added same to voice from microphone, for deliberate practice speaking what was learned. To help with spaced repetition.