shouldn’t 1080p and 4k have no difference if my monitor is only capable of displaying 1080p
In: 422
People have decent insight, but the main thing to consider is the amount of information in a video. Compression typically is proportionate to an image, and as there’s more information in 4k, assuming a full HD (1080) video and 4k video uses the same compression, you can still expect the 4k version of the video to still be larger, and this have more information in it.
Once the information is received by your computer (streaming, normal download, already saved on your PC), it’s a matter of resizing the video to fit your screen. Since the 4k has more detail simply because it’s larger and has more information, the effects of compression are less noticed when it’s shrunk down.
Similarly, if you take an HD video (720) and then take a FHD (1080) version but shrink it down, it’ll look a bit better because again, compression will typically happen before resizing.
Mind you, this was how it was explained to me a while back.
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