Sort of a minor problem but I thought I'd ask because I'm curious as to why it happens. I'm playing an MKV of UHD The Hunger Games (2012) and on my screen it looks like this

- screen.jpg (858.55 KiB) Viewed 5931 times
but when I take a screenshot with CMD+OPTION+S it looks like this

- screenshotex.jpg (1.5 MiB) Viewed 5931 times
Why is it doing this?
I'm admittedly new to this so I might be missing something obvious.
