This one puzzles me, and I'm looking for a very technical answer.
Say I'm on YouTube and I chose 1080p for the video resolution.
However, my screen's resolution is 1280x720.
This means I'm displaying 1080 on a 720.
Is it possible for the human eye to notice the difference?
Is it the same as if I just changed the video's resolution to 720p, making 1080p resolution a waste if I didn't have the display resolution for it?
Is it actually worse to scale down a 1080 video to a 720 display? Does it pixelate or something?
I honestly don't have good eyes to test it myself, and that's why I'm looking for an impartial, technical answer.