Quality Control (QC) Vocabulary

QC Vocabulary defines terms that are used in QC with the goals of 1) Ensuring that terms are used consistently, and 2) ensuring that terms are encoded consistently. The page for this topic is here.

This page shows terms for the "COLOR-TRANSFORM" category. Color Transform, short for Color Volume Transform, covers techniques that ensure the best visual experience. Although this addresses high dynamic range and wide color gamut, it also covers errors associated with ensuring standard range and gamut are properly encoded.

This category was introduced in Version 1.1

Version 1.1, December 17, 2019

Term Description Definition V
COLORPoor quality transformGeneral category that causes color transform resulted in poor quality video. For example, cases where the metadata (DV, HDR10+, or otherwise) says it's rec.2020, the header info in the video file matches and says the video file colorspace is rec.2020. However, upon playback through proper channels, the color is incorrect. (due to incorrect color handling further up stream). In this case, the color transform metadata is as expected, but the video picture isn't as expected.1.1
FILE-NAMINGFile naming convention violatedSome Color Transform Metadata schemes assume files named to convention to correctly identify them. This error indicates that those conventions were violated.1.1
MAXFALL-MAXCLLMaxFALL or MaxCLL incorrect or missingMaxFALL, MaxCLL out of spec or not specified when expected1.1
MISSINGMissing MetadataColor Transform Metadata (e.g., HDR10+, Dolby Vision) or flag is missing1.1
OTHERAny other color transform metadata issueAny other color transform metadata issue not covered by another term1.1
OUT-OF-SYNC-EVENTOut-of-syncColor Transform Metadata (e.g., HDR10+, Dolby Vision) is not in sync with the picture (Single Event)1.1
OUT-OF-SYNC-TRACKOut-of-sync-trackColor Transform Metadata (e.g., HDR10+, Dolby Vision) is not in sync with the picture (Track). Could be labeled to the wrong segment of video.1.1
PLATFORM-REQUIREMENTSColor Volume Transform violates platform requirementsColor Volume Transform does not comply with platform specifications. For example, color volume is outside of platform requirements.1.1
STATIC-METADATA-ERRORStatic metadata missing or incomplete.SMPTE ST 2086 metadata (or other similar or equivalent data) is out of spec or missing1.1
VIOLATES-SPECIFICATIONColor Volume encoding violates specs or standards that dictate how the format should be encodedColor Transform Metadata (e.g., HDR10+, Dolby Vision) is not correct to spec that governs its type. For example, Dolby Vision metadata does not comply with the Dolby Vision spec, or HDR10+ metadata does not comply with HDR10+ spec1.1
WRONG-TYPEWrong type providedColor Transform Metadata (e.g., HDR10+, Dolby Vision) is not the format expected (e.g., Dolby Vision when HDR10+ expected)1.1