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And then when you've got an ultrawide monitor but the pre-rendered cutscenes are hard-encoded at 16:9 resolution, so you get black bars...

Quite bizarrely, the recent Silent Hill remake has in-engine cutscenes (not prerendered) but STILL has black bars on the sides during them, because the game intentionally adds overlays only during cutscenes! There's an unofficial patch to fix it.

I can only assume they did this because the camera positioning and "cinematography" was done with a 16:9 screen in mind, and when the view is wider you might see more/different things than the creators wanted. Feels so undesirable as a player, though!