Cross-platform desktop video player, with the ability to write plug-ins for it?

Question

Software players

Good afternoon, comrades and gentlemen!
I'm looking for a video player (so far to no avail) that is:
0) Cross-platform, ie. can at least work on window 10 and Ubuntu 16.x;
1) Has some kind of API so that you can extend its functionality and write plugins;
2) It would be nice if you could write plugins in one of the languages ​​​​(Python, Java, JS);
3) And of course it's free.
Does anyone have such a player in mind? Who developed plug-ins for video players, can you share your experience?
Thank you!

Answer 1

vlc?