0023B - Macroblocking
v1.0
published
0023B
v1.0
MACROBLOCKING
Detect Visible Macroblocks
Detection, Edge/Corner
Below Thresholds
% of Picture Obscured
https://qc.ebu.io/items/0023B/versions/1-0-0/
Check
Report
Summary
- EBU QC Id
- 0023B
- Name
- Macroblocking
- Status
- published
- Category
- objective
- Lead editor
- Eric Carson
- Aliases
- macroblocking noise visible macroblocking blocking slicing pixelation blockiness
- Tags
- video
Versions
| Version | Status | Edition date | Saved by | Note |
|---|
Details
- Definition
- System shall detect macroblocks that would be visible to the human eye due to one or more of their edges appearing to disrupt the baseband picture.
- References
-
- Examples
-
-
00:00:00:20 2,4% (39 out of 1620 macroblocks) macroblocks detected
-
00:00:00:21 2,7% (43 out of 1620 macroblocks) macroblocks detected
-
-
Input parameters
| Name | Description |
|---|
Output parameters
| Name | Description |
|---|
Test material
| Title | Version | Download |
|---|
Remarks
- Remarks
- This test is intended to cover various visible artifacts such as macroblocking, slice errors and pixelation caused by imcorrect encoding or overcompression. There are many accepted methods to detect such artifacts which are optimised for detecting various specific artefacts. It should be noted that different tools will likely give different results when using this test.
User discussions
| Title | Author | Last update |
|---|