Miteiru is an open source Electron video player to learn Chinese, Cantonese, and Japanese. It can play all Youtube and HTML 5 supported format (.mkv, .mp4, .mov, and many more) videos, and lots of supports on other subtitle formats (.srt, .ass, .vtt, and many more)
Why do you think that https://github.com/januschung/asian-comprehension-worksheet-generator is a good alternative to miteiru