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0048W - Scanning Type
published
0048W v2.0
Item image
VIDEO SCANNING
Video Scanning Type
SMPTE ST 381-2, ST 381-3
Expected Scanning Type
Scanning Type, Mismatch
https://qc.ebu.io/items/0048W/versions/2-0-0/
Check
Report
Summary
EBU QC Id
0048W
Name
Scanning Type
Status
published
Category
absolute
Lead editor
Rowan Depomerai
Aliases
picture scanning video scanning interlacing interlace mode scanning mode frame layout coded content scanning kind AVC coded content kind CodedContentScanning CodedContentType
Tags
video MXF
Versions
Version Status Edition date Saved by Note
Details
Description
Enumerated value specifying Picture type and Coding type (e.g. Progressive, Interlaced or Mixed).
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: "Scanning Type Expected" = Progressive
    Output: "Check Result" = false
    Output: "Scanning Type" = 2
    Output: "Scanning Type Text" = Interlaced

    Remark: Used as a Check, e.g. for MPEG 2 video.

  • Output: "Scanning Type" = false

    Remark: Used as a Report.

  • Input: "Scanning Type Expected" = Interlaced
    Output: "Check Result" = true
    Output: "Scanning Type" = 3
    Output: "Scanning Type Text" = Interlaced Frame Picture

    Remark: Used as a Check, e.g. for AVC video.

  • Input: "Scanning Type Expected" = Interlaced
    Output: "Check Result" = true
    Output: "Scanning Type" = 2
    Output: "Scanning Type Text" = Interlaced FieldPicture

    Remark: Used as a Check, e.g. for AVC video.

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 Test is a Readout only and includes no Measurement.

As well as interlaced or progressive, the video may be indicated to be PsF (interlaced structure but material from a progressive source).

Note that systems should be aware of the metadata flag MBAFF in AVC compressed video which gives interlaced output in baseband.
Some material will be mixed, and it would be very useful to log changes within files.

Also note that Interlaced material with no movement is indistinguishable from PsF.
User discussions
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