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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 |
| COLOR | Poor quality transform | General 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-NAMING | File naming convention violated | Some Color Transform Metadata schemes assume files named to convention to correctly identify them. This error indicates that those conventions were violated. | 1.1 |
| MAXFALL-MAXCLL | MaxFALL or MaxCLL incorrect or missing | MaxFALL, MaxCLL out of spec or not specified when expected | 1.1 |
| MISSING | Missing Metadata | Color Transform Metadata (e.g., HDR10+, Dolby Vision) or flag is missing | 1.1 |
| OTHER | Any other color transform metadata issue | Any other color transform metadata issue not covered by another term | 1.1 |
| OUT-OF-SYNC-EVENT | Out-of-sync | Color Transform Metadata (e.g., HDR10+, Dolby Vision) is not in sync with the picture (Single Event) | 1.1 |
| OUT-OF-SYNC-TRACK | Out-of-sync-track | Color 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-REQUIREMENTS | Color Volume Transform violates platform requirements | Color Volume Transform does not comply with platform specifications. For example, color volume is outside of platform requirements. | 1.1 |
| STATIC-METADATA-ERROR | Static metadata missing or incomplete. | SMPTE ST 2086 metadata (or other similar or equivalent data) is out of spec or missing | 1.1 |
| VIOLATES-SPECIFICATION | Color Volume encoding violates specs or standards that dictate how the format should be encoded | Color 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+ spec | 1.1 |
| WRONG-TYPE | Wrong type provided | Color Transform Metadata (e.g., HDR10+, Dolby Vision) is not the format expected (e.g., Dolby Vision when HDR10+ expected) | 1.1 |
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