video-motion-graphics

Use when creating After Effects compositions, Premiere Pro motion, video titles, explainer videos, or broadcast motion graphics.

INSTALLATION
npx skills add https://github.com/dylantarre/animation-principles --skill video-motion-graphics
Run in your project or agent environment. Adjust flags if your CLI version differs.

SKILL.md

Video Motion Graphics

Apply Disney's 12 animation principles to After Effects, Premiere Pro, and video motion design.

Quick Reference

Principle

Motion Graphics Implementation

Squash & Stretch

Overshoot expressions, elastic motion

Anticipation

Pre-movement, wind-up keyframes

Staging

Composition, depth, focus pulls

Straight Ahead / Pose to Pose

Frame-by-frame vs keyframe animation

Follow Through / Overlapping

Delayed layers, expression lag

Slow In / Slow Out

Graph editor curves, easing

Arc

Motion paths, rotation follows path

Secondary Action

Environment response, particle systems

Timing

24/30/60fps considerations

Exaggeration

Scale beyond reality, dramatic motion

Solid Drawing

Z-space, 3D consistency, parallax

Appeal

Smooth, professional, emotionally resonant

Principle Applications

Squash & Stretch: Use scale property with different X/Y values. Overshoot expressions create elastic motion. Shape layers deform more naturally than pre-comps for organic squash.

Anticipation: Add 2-4 frames of reverse motion before primary action. Wind-up for reveals—slight scale down before scale up. Position anticipation: move opposite direction first.

Staging: Use depth of field to direct focus. Vignettes frame important content. Motion blur on secondary elements. Composition leads eye to focal point.

Straight Ahead vs Pose to Pose: Traditional frame-by-frame for character animation. Keyframe-based for graphic animation. Most motion graphics are pose-to-pose with expression refinement.

Follow Through & Overlapping: Use valueAtTime() expressions for lag. Stagger layer animation with offset. Secondary elements continue 4-8 frames past primary stop. Parent/child relationships with delayed response.

Slow In / Slow Out: Master the Graph Editor—never use linear keyframes. Easy Ease is starting point, customize curves. Bezier handles control acceleration. Speed graph shows velocity.

Arc: Enable motion path editing. Auto-orient rotation to path. Add roving keyframes for smooth arcs. Natural motion rarely travels in straight lines.

Secondary Action: Particles respond to primary motion. Shadows and reflections follow. Background elements shift with parallax. Audio waveforms drive visual elements.

Timing: 24fps: Cinematic feel, motion blur essential. 30fps: Broadcast standard, smoother. 60fps: Digital-first, very smooth. Hold frames (2s, 3s) for stylized timing.

Exaggeration: Motion graphics can push further than reality. Scale overshoots to 120-150%. Rotation extends past final. Color and effects can punctuate exaggeration.

Solid Drawing: 3D layers maintain spatial consistency. Parallax creates depth hierarchy. Consistent light direction across elements. Z-positioning creates believable space.

Appeal: Smooth interpolation, no jarring cuts. Color grading unifies composition. Typography has weight and personality. Motion feels intentional and professional.

After Effects Techniques

Overshoot Expression

// Apply to any property for elastic overshoot

freq = 3;

decay = 5;

n = 0;

if (numKeys > 0) {

    n = nearestKey(time).index;

    if (key(n).time > time) n--;

}

if (n > 0) {

    t = time - key(n).time;

    amp = velocityAtTime(key(n).time - .001);

    w = freq * Math.PI * 2;

    value + amp * (Math.sin(t * w) / Math.exp(decay * t) / w);

} else {

    value;

}

Stagger Expression

// Apply delay based on layer index

delay = 0.1;

d = delay * (index - 1);

time - d;

Timing Reference

Element

Duration

Easing

Text reveal

15-25 frames

Ease out

Logo animation

30-60 frames

Custom curve

Transition

10-20 frames

Ease in-out

Lower third in

12-18 frames

Ease out

Lower third out

8-12 frames

Ease in

Export Considerations

  • Preview at final framerate
  • Enable motion blur for fast motion
  • Check timing at 1x speed, not RAM preview
  • Account for broadcast safe areas
  • Test on target display format
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