0222W - Horizontal Subsampling
v2.0
published
0222W
v2.0
HORIZONTAL SUBSAMPLING
Horizontal Subsampling
User Profile
Matches Requirements
Expected/Unexpected Values
https://qc.ebu.io/items/0222W/versions/2-0-0/
Check
Report
Summary
- EBU QC Id
- 0222W
- Name
- Horizontal Subsampling
- Status
- published
- Category
- absolute
- Lead editor
- Jens SCHNEEWEISS
- Aliases
- H-Subsampling Horizontal Sub Sampling
- Tags
- video MXF MXF-only
Versions
Version | Status | Edition date | Saved by | Note |
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Details
- Description
- The horizontal subsampling specifies the ratio of luminance subsampling to colour difference subsampling in horizontal direction. Examples: 4:4:4, 4:2:2, 4:2:0.
A related metadata element in MXF is "Vertical Subsampling", see EBU QC Test ITem 0223W. - Definition
- Used in Checks, the system shall read out the horizontal subsampling value indicated in the wrapper metadata and check if it matches the expected one specified in the input. Optionally, the system may report the horizontal subsampling value.
Used in Reports, the system shall read out the horizontal subsampling value indicated in the wrapper metadata and report it. - References
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Remark: MXF G.2.27 Horizontal Subsampling
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User profiles
Remark: E.g. the ARD-ZDF profiles
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- Examples
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Input: "Horizontal Subsampling Expected" = 1
Output: "Check Result" = false
Output: "Horizontal Subsampling" = 4Remark: Used as a Check
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Input: none
Output: "Horizontal Subsampling" = 1
Output: "Horizontal Subsampling Text" = 4:4:4Remark: Used as a Report
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Input parameters
Name | Default value | Description | Data model name | Unit | Locator |
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Output parameters
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Test material
Title | Version | Download |
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Remarks
- Remarks
- This item is a Read Out only and includes no Measurement.
User discussions
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