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0026W - Timecode
published
0026W v3.0
Item image
TIMECODE
Presence, Continuity
EBU R 122, SMPTE ST 385, ...
Expected TC Values
Expected/Unexpected Values
https://qc.ebu.io/items/0026W/versions/3-0-0/
Check
Report
Summary
EBU QC Id
0026W
Name
Timecode
Status
published
Category
absolute
Lead editor
Friedrich Gierlinger
Aliases
tc
Tags
MXF timecode MXF-only
Versions
Version Status Edition date Saved by Note
Details
Description
In MXF timecode can be located in the Material Package, Source Package and System Item.

Discontinuities are not allowed in the Material Package timecode for OP1a, but for the Source Package multiple timecode component sets are allowed.

For frame-based wrapping, each System Item can have its own timecode. In that case, the first System Item timecode found shall be the "Start Timecode".
Definition
Used in Checks, the system shall read out the available start timecode(s) indicated in the wrapper metadata and check against the user input. For the Source Package and System Item start-timecode, the system shall also report where discontinuities exist. Optionally the system may report the read out start timecode(s) indicated in the wrapper metadata.

Used in Reports, the system shall read out the available start timecode(s) indicated in the wrapper metadata. For the Source Package and System Item start timecode, the system shall also report if discontinuities exist.
References
Examples

  • Input: "Material Package Start Timecode Expected" = 10:00:00;00
    Input: "Source Package Start Timecode Expected" = 11:00:00;00
    Input: "System Item Start Timecode Expected" = 12:00:00;00
    Output: "Check Result" = false
    Output: "Timecode Discontinuity Detected" = at video frame 91200 (WrapperLocation=System Item)
    Output: "Timecode Discontinuity Detected" = at video frame 96200 (WrapperLocation=System Item)
    Output: "Material Package Start Timecode" = 10:00:00;00
    Output: "Source Package Start Timecodet" = 10:00:00;00
    Output: "System Item Start Timecode" = 10:00:00;00

    Remark: Used as a Check.

  • Input: none
    Output: "Material Package Start Timecode" = 10:00:00;00
    Output: "Source Package Start Timecode" = 10:00:00;00
    Output: "System Item Start Timecode " = 10:00:00;00
    Output: "Timecode Discontinuity Detected" = at video frame 96200 (WrapperLocation=Source Package)
    Output: "Timecode Discontinuity Detected" = from frame 96200 to frame 96205 (WrapperLocation=System Item)

    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
Since MXF version 1.3 it is clearly defined how timecode shall be implemented in case of existing Origin/PreCharge.

Unfortunately it cannot be measured if the timecode is written correctly because of the possibility to write any timecode in the different packages. So this Test is a readout only.
User discussions
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