Integrate MPV, EMMS, Org and others with Emacs, make watching/download/convert
video or audio conveniently and taking notes easily. Make EMMS support Windows.

Installation:
 - Install `emms' from elpa
 - Install `mpvi' from melpa, then load it
 - Install the dependencies: mpv (required), yt-dlp, ffmpeg, seam, danmaku2ass and tesseract

Use `mpvi-open' to open a video/audio, then control the MPV with `mpvi-seek'.

You can alse control MPV that is opened from `emms'.