User talk:38.111.145.4

Your assumption that compressed content is superior to uncompressed content is unfounded and likely incorrect. Consider the choice between transmission of 10-bit 4:2:0 YCbCr uncompressed video or 2:1 compressed 4:4:4/RGB video. Assuming the same resolution and timing, the two signals require the same transmission bandwidth. If the source of the video is a computer, and it is driving graphics, a word processor, etc., then the video format is RGB 10-bit. In that case, it is very likely that the 2:1 compressed video will look better than 4:2:0, because of artifacts visible along high contrast edges when 4:2:0 sampling is applied. However, if the content originated as compressed video - DVD, blu-ray, streaming video, cable TV, etc. - then the video has been compressed with a codec which began by reducing chroma to 4:2:0, and then it is decompressed to 4:2:0. So what is better? Transmitting this 4:2:0 without compressing it, or up-sampling to 4:4:4, compressing 2:1, and transmitting it? Of course, the answer is that retaining 4:2:0 is most likely superior.