4k vs 1080p and Upscaling: What's the Difference? - RTINGS.com
https://www.rtings.com/tv/learn/4k-ultra-hd-uhd-vs-1080p-full-hd-tvs-and-upscaling-compared
WebFeb 19, 2021 · Native 4k content is very popular, especially on streaming apps, but some of what you watch may still be lower-resolution content upscaled to UHD, which will look different from native 4k. To present lower-resolution material on a 4k TV, the TV has to perform a process called upscaling.
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