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0177X - Dropped Frame
published
0177X v1.0
Item image
DROPPED FRAME
Dropped Frames
Frame Rate As Expected
No Dropped Frames
Location
https://qc.ebu.io/items/0177X/versions/1-0-0/
Check
Report
Summary
EBU QC Id
0177X
Name
Dropped Frame
Status
published
Category
absolute
Lead editor
Annabel Polanco
Aliases
Tags
frame rate dropped frame
Versions
Version Status Edition date Saved by Note
Details
Description
"Dropped Frame" refers to a single or sequence of frames which are missing or lost in the video essence.

Dropped Frames impact the Technical quality of an asset. The customer experience is negatively affected as on screen motion will appear jerky or like a jump cut has occurred, which could create confusion. Though dropped frames may be creative intent or the result of an animation style. Any video derived from this file will contain Dropped Frames.
Definition
Used in Checks, the system shall read out the Video Frame Rate indicated in the wrapper metadata, check if it matches the expected Frame Rate specified in the material itself and flag discrepancies in content where frames have been dropped. Optionally the system may report the Video Frame Rate indicated in the wrapper.

Used in Reports, the system shall read out the timecode where a frame has been dropped.
References
Examples

  • Output: "Check Result" = false
    Output: "Dropped Frame Segment = from 00:30:03;00 to 00:32:03;00

    Remark: Used as a Check.

  • Output: "Dropped Frame Segment = from 00:30:03;00 to 00:32:03;00

    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
The missing frame may for example show up as a sudden jump in the position of moving objects in the video.

For Tests for corrupted frames, see for example: #0002B (Latest version), #0023B (Latest version), and #0039B (Latest version).
User discussions
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