This code in an html file, played back in a webviewer, should play the video without controls (and without sound)
<!DOCTYPE html>
<html>
<body>
<video width="320" height="240"autoplay muted>
<source src="movie.mp4" type="video/mp4">
<source src="movie.ogg" type="video/ogg">
Your browser does not support the video tag.
</video>
</body>
</html>
Your video and html file need to be in the same directory.
With the videoPlayer method, you could replicate the buttons/components in the customSheet.
But if the whole idea is for users to watch the video, why do they need access to other components ?