0242W - Image Alignment Offset
v2.0
published
0242W
v2.0
IMAGE ALIGNMENT OFFSET
Image Alignment Offset
User Profile
Matches Requirements
Values, Mismatch
https://qc.ebu.io/items/0242W/versions/2-0-0/
Check
Report
Summary
- EBU QC Id
- 0242W
- Name
- Image Alignment Offset
- Status
- published
- Category
- absolute
- Lead editor
- Andy QUESTED
- Aliases
- ImageAlignmentFactor
- Tags
- video MXF MXF-only
Versions
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Details
- Description
- Specifies number of bytes to align the start of an image with a defined memory boundary.
- Definition
- Used in Checks, the system shall read out the Image Alignment Offset indicated in the wrapper metadata and check if it matches the expected one specified in the input. Optionally, the system may report the value.
Used in Reports, the system shall read out the Image Alignment Offset indicated in the wrapper metadata and report it. - References
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Remark: G.2.22 Image Alignment Offset
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- Examples
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Input: "Image Alignment Offset Expected" = 1
Output: "Check Result" = false
Output: "Image Alignment Offset" = N/PRemark: Used as a Check Note the value could not be read out, so the tool reports "N/P".
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Output: "Image Alignment Offset" = 512
Remark: Used as a Report
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Input parameters
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Output parameters
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Test material
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Remarks
- Remarks
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This deprecated property is provided for compatibility with some formats which may be wrapped by MXF (for example some uncompressed disc formats).
New implementations should use KAG rules and the Image Alignment Offset should be omitted unless backwards compatibility with the existing format requires a value greater than 1.
User discussions
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