Motion Tracking in After Effects: Complete Tutorial

Motion tracking lets you attach elements to moving footage — essential for VFX, compositing, and screen replacements.

Built-in Point Tracker (Good for simple tracking):
1. Select your footage layer
2. Window → Tracker (opens the Tracker panel)
3. Click "Track Motion"
4. A track point appears in the comp viewer — drag it onto a high-contrast feature (corner of a building, eye of a person, logo on a wall)
5. Click "Analyze forward" (the ▶ button in the Tracker panel)
6. After analysis, click "Apply" → choose Apply Dimensions (X and Y)
7. Select the target layer you want to attach to the tracked motion

Choosing good track points:
- High contrast edges or corners
- Features that stay visible throughout the shot
- Avoid: flat areas, moving objects, areas that go off-screen

Stabilization (removing camera shake):
1. Select footage → Tracker panel → click "Stabilize Motion"
2. Position the track point on a static feature
3. Analyze → Apply
4. Scale up the layer slightly to cover the edges that shift

Mocha AE (Planar Tracking — Built into AE):
Mocha uses planar (surface) tracking instead of point tracking — far more robust.
1. Select your footage → Animation → Track in Boris FX Mocha
2. Draw a shape around the surface you want to track (like a phone screen)
3. Click Track Forward
4. Export tracking data back to AE (choose AE Corner Pin or Transform)

When to use which:
- Point Tracker: Quick attachments, simple movements, titles following an object
- Mocha: Screen replacements, sign replacements, complex camera movement, when point tracking keeps losing the target

3D Camera Tracker (built-in):
For matching 3D elements to real footage:
1. Select footage → Animation → Track Camera
2. AE analyzes the entire shot automatically
3. Click on the colored tracking points → Right-click → Create Null and Camera
4. Now you have a 3D camera that matches the real camera move — parent your 3D elements to the null

Pro tip: If the built-in point tracker keeps slipping, try Mocha first before giving up. Mocha handles motion blur, partial occlusion, and rotation far better than the point tracker. It's included free with AE — most people don't realize this.