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How to Fix Frigate Motion Masks Ignoring Actual Motion Areas

Frigate GuideSecurity Cameras
medium difficulty 15-20 minutes 25 views 0 found helpful Updated
This guide applies to: Frigate Frigate Motion Mask Tuning (Frigate motion prefilter masking)
At a glance — most common causes
  • Mask polygon overlaps target path
  • Scene angle changed after setup
  • Mask copied from wrong camera
15-20 minutes6 solutions coveredmedium level

Expert Review & Technical Scope

DeviceFrigate Frigate Motion Mask Tuning
Model CoverageFrigate motion prefilter masking
Fix Time15-20 minutes
DifficultyMedium
Required Toolsfrigate config, test recordings
Network / ProtocolWi-Fi / app-based troubleshooting context

Authority References

Problem Description

When your Frigate Frigate Motion Mask Tuning isn't working as expected, it usually traces back to one of a small number of causes — this guide covers them in order, starting with the most likely.

Symptoms

  • Events missing in active zone
  • Motion overlay not matching expectation
  • Only large movement detected

Recognize these? Here's what usually causes it.

Common Causes

  • Mask polygon overlaps target path
  • Scene angle changed after setup
  • Mask copied from wrong camera

Most fixes happen in the first 3 steps.

Warning

Do not reuse masks across cameras with different fields of view.

Tools & Requirements

frigate configtest recordings

Step-by-Step Solution

1

Review current overlays

Compare mask boundaries with real movement paths.

2

Refine mask geometry

Exclude only nuisance areas like trees or roads.

3

Confirm event recovery

Retest expected detections after mask update.

Quick Solutions

Redraw mask per current camera angle
Validate with test walk-through
Separate nuisance area masks from target path

Still having issues? This is usually the deeper cause below.

If the sensor still misses events after repositioning, check whether a scheduled 'home' or 'away' mode is overriding the sensitivity setting silently.

Pro Tip

Mask tuning should be revisited after camera repositioning.

Real-World Insight

This issue almost always looks more complex than it is — the majority of cases trace back to a single setting, a stale credential, or a default that shipped wrong.

What Usually Goes Wrong
  • Mask polygon overlaps target path
  • Scene angle changed after setup
  • Mask copied from wrong camera

Need More Help? Frigate Support

Note: The contact information below connects you directly to Frigate's official customer support team, not Trunetto. They can help with warranty claims, device replacements, and advanced technical issues.