0224W - Identical GOP Indicator
v2.0
published
0224W
v2.0
IDENTICAL GOP INDICATOR
Identical GOP Indicator
User Profile
Matches Requirements
Mismatch, Value
https://qc.ebu.io/items/0224W/versions/2-0-0/
Check
Report
Summary
- EBU QC Id
- 0224W
- Name
- Identical GOP Indicator
- Status
- published
- Category
- absolute
- Lead editor
- Jens SCHNEEWEISS
- Aliases
- IdenticalGOP AVC Identical GOP Indicator
- Tags
- video MXF MXF-only
Versions
Version | Status | Edition date | Saved by | Note |
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Details
- Description
- In MXF the information depends on the video codec used:
MPEG Descriptor:
TRUE if every GOP in the sequence is constructed the same, per ISO/IEC 13818-1 IBP descriptor.
Note: it is not entirely clear if the last GOP (which is often shorter than the others) is included or not (!)
AVC Sub Descriptor:
TRUE if every GOP in the sequence has the same number of pictures and the same types of pictures in the same order.
FALSE if not all GOPs are known, or if there is at least one GOP in the sequence which has any of the following:
1. a different number of pictures;
2. the same types of pictures but in a different order;
3. different types of pictures. - Definition
- Used in Checks, the system shall read out the value 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 value indicated in the wrapper metadata and report it. - References
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Remark: MPEG Video Descriptor
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Remark: AVC Sub Descriptor
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Remark: Sony MPEG Long GOP
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Remark: e.g. the ARD-ZDF profiles
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- Examples
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Input: "Identical GOP Indicator Expected" = true
Output: "Check Result" = false
Output: "Identical GOP Indicator" = falseRemark: Used as a Check.
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Output: "Identical GOP Indicator" = false
Remark: 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
Name | Alias | Description | Data model name | Unit | Locator |
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Test material
Title | Version | Download |
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Remarks
- Remarks
- This item is a Readout only and includes no Measurement.
User discussions
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