EBU Logo EBU Logo
0069F - Display Aspect Ratio
published
0069F v3.0
Item image
DISPLAY ASPECT RATIO
Display Width:Height
Broadcaster Guidelines
Matches Guidelines
Expected/Unexpected Values
https://qc.ebu.io/items/0069F/versions/3-0-0/
Check
Report
Summary
EBU QC Id
0069F
Name
Display Aspect Ratio
Status
published
Category
absolute
Lead editor
Andy QUESTED
Aliases
aspect ratio video aspect ratio
Tags
video
Versions
Version Status Edition date Saved by Note
Details
Definition
Used in Checks, the system shall test if the Display Aspect Ratio indicated in the bitstream matches with the expected Display Aspect Ratio specified in input for the entire duration of the content.

Used in Reports, the system shall report the Display Aspect Ratio indicated in the bitstream including any variations along the timeline when present.
References

  • ISO/IEC 13818-Part 2

    Remark: MPEG-2 Video

  • ISO/IEC 14496-Part 10

    Remark: AVC/MPEG-4 Video

  • ISO/IEC 23008-Part 2

    Remark: HEVC Video

Examples

  • Input: "Display Aspect Ratio Expected" = 4:3
    Output: "Check Result" = true

    Remark: Used as a Check.

  • Input: None
    Output: "Display Aspect Ratio" = 16:9 from 10:00:00:00 to 10:10:00.00
    Output: "Display Aspect Ratio" = 4:3 from 10:10:00:01 to 10:18:00.00

    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
"Display Aspect Ratio" or DAR as referred to in this Test is the aspect ratio of the intended display device, NOT the screen window.

When DAR is not explicitly declared in the bitstream, the system shall compute it.
User discussions
Title Author Last update