Get real size of the drawable view

Hi, i'm trying to display overlay over the VLCMediaPlayer but as the VLCMediaPlayer add black border, i can't get the size/frame for the video it self. i do some calculation using the aspect ratio (by the way videoAspectRatio return nil) but the result is not "pixel perfect". is there any way to get the this info ?

Thanks.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information