can I enjoy the screen size on YouTube? Without having the black edges?
Pinch out with two fingers.
It will crop a little bit from top and bottom but it will be full-screen.
Crop a lot of the screen
And what did you expect while maintaining the aspect ratio? Our screen does not have a 16: 9 aspect ratio.
Am I understand you correctly that you require a function that would distort the image by stretching it to the sides to fill whole screen? Like in MX Player for example?