4K video offers four times the pixel count of 1080p, resulting in much sharper imagery.
Because S1 is a high-end studio, their 4K masters typically offer superior skin textures, clarity in low-light scenes, and more vibrant color grading compared to standard web-rips. These files are usually encoded in H.265 (HEVC) sone059 4k top
When content is labeled as "4K Top" in these contexts, it usually implies: 4K video offers four times the pixel count