For the majority of the movies out there the notch is a non issue. Assuming you are watching a movie recorded in a 16:9 ratio. Another way of defining 16:9 is the HD resolution of 1920x1080 (or 1080p) (1080i, 720p and even 4k exist but for the majority of films this is the resolution.) This just happens to be the same resolution of the iPhone Plus series. The only Phone in Apples lineup that you can watch a video edge to edge without getting some distortion or loss in video resolution.
Here you can see the screen of the iPhone 8 Plus (1920 x 1080 or 1080p) in comparison to the higher resolution iPhone X. At 1125 pixels. The iPhone X has a few pixels to spare across the top and bottom. Probably just enough to eliminate any edge distortion caused by the curvature of the glass screen along the edge.
Forcing a movie to fill the screen can only be accomplished by two methods.
Here you can see the screen of the iPhone 8 Plus (1920 x 1080 or 1080p) in comparison to the higher resolution iPhone X. At 1125 pixels. The iPhone X has a few pixels to spare across the top and bottom. Probably just enough to eliminate any edge distortion caused by the curvature of the glass screen along the edge.
Forcing a movie to fill the screen can only be accomplished by two methods.
- Stretch the video to fill the screen horizontally. This can be done another of ways but all of them require smearing the left and right edge causing it to look distorted similar to stretched out silly putty
- Zoom the video so the left and right edge of the film meet the left and right edges of the display (with or without the notch.