Add a rotate video button in players

Since a lot of media is downloaded and backed up from mobile devices nowadays, it would be nice to be able to rotate the videos to landscape and portrait modes. I use Media Player Classic Home Cinema’s PnS Rotate Z- keyboard shortcut to do this when I need to watch something that was captured from a smartphone camera.

This would be helpful for people watching videos on their desktop computers especially.

Early 2021 clean-up: duplicate