Description

Specifies the duration of the audio essence container which represents the duration of the wrapped essence.

Definition

Used in Checks, the system shall read out the audio duration indicated in the wrapper container duration 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 audio duration indicated in the wrapper container duration metadata and report it.

CheckResult definition v3

not in this version

Analysis method v3

not in this version

References

• SMPTE ST 377-1

  Remark: File Descriptor

• SMPTE Metadata Registry

Examples

• Input: "Audio Duration Expected" = 7200920 ms
  Input: "Audio Duration Tolerance" = 100 ms
  
  Output: "Check Result" = false
  Output: "Audio Duration" = 7200720 ms, "track" = 1
  Output: "Audio Duration Mismatch" = 200 ms

  Remark: Used as a Check

---

• Input: none
  Output: "Audio Duration" = 7200720 ms

  Remark: Used as a Report

A 'structural' badge marks a node with no Value of its own; its value, if any, lives on its children instead (Annex C).

Remarks

This QC Test is about the duration of the essence container which means the total duration excluding any precharge/rollout.
To check the playout duration please use #0115W (Latest version)

The metadata element in MXF is optional and may not be set.

This Test is a readout only and includes no measurement. For measurements please use #0273W (Latest version)

In MXF the container duration is signalled in edit units. Please note that the output unit for this test is ms.

If the metadata appears more than one time in the file, the Track and WrapperLocator (implicit) attributes may be used.