Why my iPad does not play any video?

That's nowhere near enough information to go on. Do all videos not play? What about ones from the Videos app, or ones from a youtube app, or in the browser? What happens when you go to play a video? Is there a black screen or does the app crash?

Yes, you should give u more information about your problem so we can help!😕ℹ

What kind of videos? you tube? the ones you made? movies? Do the "videos" start playing and stop or can they not load or what? Please give more details if you want help!