- EBU QC Id
- 0295B
- Name
- Sync - Global Drift Early
- Status
- published
- Category
- human-only review
- Lead editor
- Stephen Webb
- Aliases
- Tags
- audio sync drift early audio drift audio sync audio error global drift
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- Description
- Audio out of sync will become more noticeable during playback, ultimately resulting in dialogue and effects falling significantly out of sync and create a poor customer experience.
For example, the audio is in sync at the beginning, 2-seconds early in middle, 5-seconds early by the end of hte programme. - Definition
- Used in Checks, the system check for audio sync drift (where audio sync with video becomes progressively earlier throughout the programme) equal to or above the minimum duration as specified in the input. Optionally the system may report the timecodes of where sync drift was detected.
Used in Reports, the system shall report the timecodes of where sync drift was detected equal to or above the minimum duration as specified in the input. - References
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- Examples
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Input: "Global Drift Early Duration" = 00:00:01;00
Output: "Check Result" = false
Output: "Global Drift Early Segment" = from 00:30:03;00 to 00:32:03;00
Remark: Used as a Check.
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Input: "Global Drift Early Duration" = 00:00:01;00
Output: "Global Drift Early Segment" = from 00:30:03;00 to 00:32:03;00Remark: Used as a Report.
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Remark: Courtesy: Netflix
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- Remarks
- There is also a Test for the opposite out-of-sync issue: #0296B (Latest version) .
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