video-motion-graphics

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Video Motion Graphics

视频动态图形

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

将迪士尼的12条动画原则应用于After Effects、Premiere Pro和视频动态设计中。

Quick Reference

快速参考

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

原则	动态图形实现方式
Squash & Stretch	Overshoot expressions、弹性运动
Anticipation	预移动、蓄力keyframes
Staging	合成、景深、焦点拉动
Straight Ahead / Pose to Pose	逐帧动画 vs keyframe动画
Follow Through / Overlapping	延迟图层、表达式滞后
Slow In / Slow Out	Graph Editor曲线、缓动
Arc	运动路径、沿路径旋转
Secondary Action	环境响应、粒子系统
Timing	24/30/60fps帧率考量
Exaggeration	超出现实的缩放、戏剧性动效
Solid Drawing	Z空间、3D一致性、视差
Appeal	流畅、专业、情感共鸣

Principle Applications

原则应用

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.

Squash & Stretch: 使用不同X/Y值的scale属性。Overshoot expressions可创建弹性运动。对于自然的挤压效果，形状图层比pre-comps的变形更自然。

Anticipation: 在主要动作前添加2-4帧的反向运动。为展示效果添加蓄力动作——在放大前先轻微缩小。位置预备：先向相反方向移动。

Staging: 使用景深引导焦点。暗角效果框选重要内容。次要元素添加motion blur。构图将视线引导至焦点。

Straight Ahead vs Pose to Pose: 传统逐帧动画用于角色动画。基于keyframes的动画用于图形动画。大多数动态图形采用pose-to-pose方式，并通过expressions优化。

Follow Through & Overlapping: 使用

valueAtTime()

expressions实现滞后效果。通过偏移错开图层动画。次要元素在主要动作停止后继续运动4-8帧。使用父子关系实现延迟响应。

Slow In / Slow Out: 精通Graph Editor——绝不使用线性keyframes。Easy Ease是起点，可自定义曲线。贝塞尔手柄控制加速度。速度曲线显示velocity。

Arc: 启用运动路径编辑。自动定向旋转以匹配路径。添加roving keyframes实现流畅弧线。自然运动很少沿直线进行。

Secondary Action: 粒子系统响应主要运动。阴影和反射跟随运动。背景元素随视差移动。音频波形驱动视觉元素。

Timing: 24fps：电影质感，必须启用motion blur。30fps：广播标准，更流畅。60fps：数字优先，非常流畅。保持帧（2秒、3秒）用于风格化时机控制。

Exaggeration: 动态图形可以比现实更夸张。缩放过度到120-150%。旋转超过最终位置。颜色和效果可强化夸张表现。

Solid Drawing: 3D图层保持空间一致性。视差创建深度层次。所有元素保持一致的光照方向。Z轴定位创建可信空间。

Appeal: 平滑插值，无突兀剪辑。色彩分级统一合成。排版具有重量感和个性。运动效果显得有目的性且专业。

After Effects Techniques

After Effects技巧

Overshoot Expression

Overshoot表达式

javascript

// 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;
}

javascript

// 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

Stagger表达式

javascript

// Apply delay based on layer index
delay = 0.1;
d = delay * (index - 1);
time - d;

javascript

// Apply delay based on layer index
delay = 0.1;
d = delay * (index - 1);
time - d;

Timing Reference

时机参考

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

元素	时长	缓动
文字展示	15-25 frames	Ease out
Logo动画	30-60 frames	自定义曲线
转场	10-20 frames	Ease in-out
下三分之一栏入场	12-18 frames	Ease out
下三分之一栏退场	8-12 frames	Ease in

Export Considerations

导出注意事项

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

以最终帧率预览
为快速运动启用motion blur
以1倍速检查时机，而非RAM预览
考虑广播安全区域
在目标显示格式上测试