sooty234 190 Posted November 23 Share Posted November 23 I was basing my supposition on this https://www.rtings.com/tv/learn/chroma-subsampling Link to post Share on other sites
pwhodges 271 Posted November 23 Share Posted November 23 1 hour ago, softworkz said: Comparing 4:2:2 to 4:2:0 doesn't add more detail. It rather adds more fine-grained color values which makes zero sense for cartoons or anime.... Though, I don't have any plausible idea why they might be doing like that. Well, I don't know quite how "10-bit" relates to these values, but the reason it (10-bit) is widely used in anime is precisely for the greater colour resolution. When you have the plain clean colours of anime used in a gradient, banding quickly becomes obvious and offensive, and using 10-bit reduces this problem significantly. Paul Link to post Share on other sites
softworkz 708 Posted November 23 Share Posted November 23 Just now, pwhodges said: Well, I don't know quite how "10-bit" relates to these values, but the reason it (10-bit) is widely used in anime is precisely for the greater colour resolution. When you have the plain clean colours of anime used in a gradient, banding quickly becomes obvious and offensive, and using 10-bit reduces this problem significantly. Yes, you are correct in that matter. When I said "fine-grained" I didn't mean a larger number of color values (as can be achieved with 10bit vs 8bit), but instead I meant more fine-grained colors in a spatial way. Those image formats like yuv420, 422 or 444 are about chroma-subsampling, which means for example in case of yuv420, that the luminance values are stored at full image resolution while the chrominance values are stored at a smaller resolution, etc etc. (I'm a bit tired today...Wikipedia is your friend) Link to post Share on other sites
pwhodges 271 Posted November 23 Share Posted November 23 Gotcha - thanks. Paul Link to post Share on other sites
sooty234 190 Posted November 23 Share Posted November 23 That link I provided, explains it very well. And I agree with softworkz. You wouldn't notice a difference between 4:2:0 and 4:2:2, but I think there are many people in the world, that believe if they have more, they'll notice a difference. I expect the guy that re-encoded the video believes that. 2 Link to post Share on other sites
sooty234 190 Posted November 23 Share Posted November 23 So here's a question. Is it transcoding because it doesn't support the pixel format or the codec variant? Both? Link to post Share on other sites
softworkz 708 Posted November 24 Share Posted November 24 21 hours ago, sooty234 said: That link I provided, explains it very well. And I agree with softworkz. You wouldn't notice a difference between 4:2:0 and 4:2:2, but I think there are many people in the world, that believe if they have more, they'll notice a difference. I expect the guy that re-encoded the video believes that. I totally missed that link that you had posted. Yes, it's a very good (and short) explanation! 1 Link to post Share on other sites
softworkz 708 Posted November 24 Share Posted November 24 21 hours ago, sooty234 said: So here's a question. Is it transcoding because it doesn't support the pixel format or the codec variant? Both? I can't tell without seeing an ffmpeg log.. 1 Link to post Share on other sites
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