Standard consumer files often use 4:2:0 chroma subsampling (discarding color information). An extra quality file for SONE040 would likely use 4:2:2 or 4:4:4 subsampling, alongside 10-bit color depth. This eliminates color banding and provides smoother gradients—essential for professional color grading or archival.
Rather than using a one-pass, variable-bitrate (VBR) encode for speed, "Extra Quality" files are typically the product of: sone040 extra quality
Video editors who need to pull clips from SONE040 for a compilation or restoration project require lossless frame accuracy. Extra quality encodes use all-intra (I-frame) or short GOP (Group of Pictures) structures, making scrubbing, cutting, and compositing seamless. Standard long-GOP files can stutter or lose detail when frame-accurate edits are attempted. Standard consumer files often use 4:2:0 chroma subsampling