Blanking Detection

Blanking Detection finds black borders around active picture content (letterboxing and pillarboxing) and can also handle slightly rotated content.

Blanking Detection highlighting detected borders

What It Detects

• Top, bottom, left, and right blanking depth

• Rotated blanking patterns (for example, corner triangles)

• Optional overlay warnings directly in the viewer

Where to Enable It

1. Open the QC panel.

2. Enable Blanking Detection.

3. Adjust margins and thresholds as needed.

Settings

Detection Margins

Set how far from each edge OmniScope should search for blanking.

Threshold Mode

Mode	Typical Use
Auto	Most workflows
Full	Full-range signals
Video	Video-range signals
Custom	Manual threshold tuning

In Custom mode, set R/G/B thresholds manually.

Warning Color

Set the overlay color used when blanking is detected.

Results and Feedback

• Overlay is drawn in the source viewer when blanking is detected.

• QC status shows active detections in real time.

• Rotation information is shown when rotated blanking is detected.

• Events are available in QC timeline workflows.

Aspect Ratio Awareness

Blanking detection runs after input aspect-ratio handling, so letterboxed content inside another container can still be detected correctly.

Troubleshooting Tips

• If dark scenes trigger false positives, tighten margins and/or raise thresholds.

• If rotated content is under-detected, widen margins slightly.

• If overlays are hard to see, switch to a higher-contrast warning color.

Demo