0224W - Identical GOP Indicator
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
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
Examples
  • Input: "Identical GOP Indicator Expected" = true
    Output: "Check Result" = false
    Output: "Identical GOP Indicator" = false

    Remark: Used as a Check.


  • Output: "Identical GOP Indicator" = false

    Remark: Used as a Report.

Input parameters
Name Default value Description Data model name Unit Locator
Output parameters
Name Alias Description Data model name Unit Locator
Test material
Title Version Download
Remarks
Remarks
This item is a Readout only and includes no Measurement.
User discussions
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