How to create a circular progress bar in the edit page ?

This is a bit of a creative question.
I make a lot of videos where I need to overlay some sort of progress indicator, showing how long the video has been playing.
A horizontal progress bar is easy, just put a rectangle on screen and keyframe the x value, at video start x=0, at video end x=1920
But now the client wants a small cirlce in the corner that gradually fills as the video progresses.
Using a circle will probably involve masking, I'm just hoping I can do it directly in the edit page (instead of x I can keyframe the rotation of the mask ?)
Is there an elegant and easy solution in the edit page ?
I make a lot of videos where I need to overlay some sort of progress indicator, showing how long the video has been playing.
A horizontal progress bar is easy, just put a rectangle on screen and keyframe the x value, at video start x=0, at video end x=1920
But now the client wants a small cirlce in the corner that gradually fills as the video progresses.
Using a circle will probably involve masking, I'm just hoping I can do it directly in the edit page (instead of x I can keyframe the rotation of the mask ?)
Is there an elegant and easy solution in the edit page ?