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Perceptual Effects of HDR Subsampling for Dolby Vision, Blu- Ray and BBC. Georg Schruff, Jan Hoydem, Jan Froehlich. July 2019 A study was conducted to determine the perceptual effect of subsampling in three different HDR standards: Dolby Vision, Blu-Ray and BBC. The results indicated that 4:2:0 subsampled HDR video sequences weren’t distinguishable from 4:4:4 sequences.... Continue Reading →
In this short clip, we're primarily interested in how Y'CbCr chroma subsampling affects skin tones in HDR video. Y'CbCr results in hue shifts and luminance errors. From our own testing, it appears to make skin tones yellowish-green, darker and oversaturated. HEVC Main 4:2:2 10 is preferable to HEVC 4:2:0. Download the comparison here. If you... Continue Reading →
A little while back, we reported that Blackmagic Design had added support for HEVC 4:2:2 Main10 on Apple Silicon in DaVinci Resolve. What we didn't realize at the time was that the render page now had three selections for encoding HEVC: Main (8-bit), Main10 (10-bit 4:2:0) and Main 4:2:2 10. Using Invisor, an app brought... Continue Reading →
The Daejeon Chronicles 