Tracking an object

Hello, I want to track a character in a video game, and have it zoomed in onto the screen. However, I want to be able to follow/track the character while its moving. Ive tried cropping the video down, but that wont work because theres no way to update it every frame without recropping the video.
I am on version 13.3.0.014, on windows 10.
If anyone knows how I could do this, it would be greatly appreciated.
I am on version 13.3.0.014, on windows 10.
If anyone knows how I could do this, it would be greatly appreciated.