Does After Effects blur faces automatically?

After Effects can track masks you draw, but it does not reliably detect every face without user-authored shapes. For automatic detection across scenes, use BGBlur after exporting or skip the NLE entirely.

Can BGBlur replace manual keyframes?

BGBlur detects faces, plates, backgrounds, and prompt-selected objects, then tracks them through the clip. You still spot-check, but you avoid drawing thousands of mask keyframes by hand.

Will this workflow work on 4K dashcam footage?

Yes—heavy 4K makes manual tracking slower, which is why fleets and creators often upload masters to BGBlur for parallel processing instead of tying up a workstation.

How to blur license plates in After Effects

Cover plates in After Effects without exposing frames between keyframes. See why trackers drift on roads at night, and when an AI redactor saves hours.

The manual way in After Effects

Track rectangular masks with Mocha; add manual keyframes on bridge shadows and headlight glare frames.

Stabilize first if the plate bounces; stabilization warps pixels and can confuse naive trackers unless you compensate.

Use guide layers for legal review so attorneys see mask outlines without them appearing in client exports.

Why the manual workflow is slow at scale

Stabilize + track + review triples comp time versus uploading a clip to an AI redactor with timeline preview.

Render queues on laptops thermal-throttle; editors babysit machines instead of creative work.

Versioned comps for each camera angle explode project folder size.

One-click alternative with BGBlur

Upload a clip and preview automatic face, plate, background, or prompt-based blur—no keyframes or nested timelines.

Open full editor →License plate blur in BGBlur

Related guides

Frequently asked questions

Why do plates slip out of masks in After Effects?: Perspective, glare, and motion blur confuse rectangular trackers. Track rectangular masks with Mocha; add manual keyframes on bridge shadows and headlight glare frames.… If frames slip, you must keyframe manually or switch to an AI plate model trained on traffic footage.
Does After Effects blur faces automatically?: After Effects can track masks you draw, but it does not reliably detect every face without user-authored shapes. For automatic detection across scenes, use BGBlur after exporting or skip the NLE entirely.
Can BGBlur replace manual keyframes?: BGBlur detects faces, plates, backgrounds, and prompt-selected objects, then tracks them through the clip. You still spot-check, but you avoid drawing thousands of mask keyframes by hand.
Will this workflow work on 4K dashcam footage?: Yes—heavy 4K makes manual tracking slower, which is why fleets and creators often upload masters to BGBlur for parallel processing instead of tying up a workstation.

BGBlur provides privacy tooling for creators and teams; consult counsel for broadcast, evidentiary, or regulated workflows.