动态缩放Dynamic Zoom

难度LEVELL2 · 进阶L2 · Intermediate 领域TOPIC剪辑

先学：Prerequisites: 时间线

学习目标LEARNING OBJECTIVES

学完你能一键给片段加上平滑的推近拉远动画，不打任何关键帧，并能在查看器里调整起止取景。

概念说明CONCEPTS

动态缩放（Dynamic Zoom）是自动生成的推拉/平移动画——在 Inspector 里勾一个开关，片段就在自身时长内缓缓推近或拉远，零关键帧。

  • 开关即用：Inspector → Video 选项卡 → Dynamic Zoom，默认关闭，打开立即生效。
  • 绿框起红框止：查看器叠加层里绿框是起始取景、红框是结束取景，拖框内移动位置、拖框角改大小。
  • 缓动调气质：Dynamic Zoom Ease 下拉菜单控制加速方式，Ease Out 让画面收尾稳稳停住，适合开场图卡。
  • 一键换方向：Swap 按钮对调起止取景，推近秒变拉远。
  • 默认缓缓推近：开启后什么都不调，画面也会从全幅轻轻推近一小段。

操作步骤STEPS

  1. 在时间线选中目标片段，打开 Inspector，切到 Video 选项卡
  2. 勾选 Dynamic Zoom 开关，点开该区块显示参数
  3. 把 Dynamic Zoom Ease 设为 Ease Out，播放片段感受缓动效果Inspector 中的 Dynamic Zoom 区块
  4. 点时间线查看器左下角的 Transform/Crop/Dynamic Zoom 按钮，菜单里选 Dynamic Zoom 模式
  5. 拖绿框（起始）和红框（结束）的框角与框内，调好起止取景查看器里的绿框与红框
  6. 再点一次该按钮关掉叠加层，完成调整

练习PRACTICE

  1. 给一张静态图片开启动态缩放，分别试 Linear 和 Ease Out 两种缓动，对比观感。
  2. 把绿框对准主体、红框推向细节，做一条 5 秒的"推近揭示"动画。

常见问题FAQ

想把推近改成拉远，要重调两个框吗？

不用。点 Inspector 里 Dynamic Zoom 区块的 Swap 按钮，起止取景一键对调，推近立刻变拉远。

查看器里看不到绿框红框？

叠加层没打开。点时间线查看器左下角的模式按钮选 Dynamic Zoom；框一出现就能拖，拖动时 Inspector 里的开关会自动勾上。

动态缩放和手动关键帧选哪个？

快速、匀速的推拉用动态缩放——零关键帧、随手可调。需要中途变速、停顿或复杂路线时，改用 Transform 打关键帧。

Learning Objectives学习目标

After this card you can add a smooth push-in or pull-out to any clip with one switch — no keyframes — and refine the start and end framing right in the viewer.

Concepts概念说明

Dynamic Zoom is an automatically generated pan-and-scan animation — flip one switch in the Inspector and the clip slowly pushes in or pulls out across its own duration, with zero keyframes.

  • One switch to start: Inspector → Video tab → Dynamic Zoom — off by default, on takes effect instantly.
  • Green start, red end: in the viewer overlay, the green box is the starting framing and the red box the ending framing; drag inside a box to move it, drag a corner to resize it.
  • Ease sets the feel: the Dynamic Zoom Ease dropdown controls acceleration; Ease Out lets the move settle gently — great for opening graphics.
  • Swap flips direction: the Swap button exchanges start and end framing, turning a push-in into a pull-out in one click.
  • Push-in by default: switch it on and touch nothing, and the frame still drifts slowly in from full view.

Steps操作步骤

  1. Select the target clip in the timeline, open the Inspector, and switch to the Video tab
  2. Enable the Dynamic Zoom switch and expand the section to show its controls
  3. Set Dynamic Zoom Ease to Ease Out, then play the clip to feel the rampThe Dynamic Zoom section in the Inspector
  4. Click the Transform/Crop/Dynamic Zoom button at the timeline viewer's lower left and choose Dynamic Zoom mode
  5. Drag the corners and insides of the green (start) and red (end) boxes to set the framingGreen and red boxes in the viewer
  6. Click the same button again to hide the overlay — done

Practice练习

  1. Enable Dynamic Zoom on a still image and compare Linear against Ease Out — same clip, two different feels.
  2. Aim the green box at your subject and push the red box toward a detail to build a 5-second "push-in reveal."

FAQ常见问题

I want a pull-out instead of a push-in — do I redo both boxes?

No. Click the Swap button in the Inspector's Dynamic Zoom section and the start/end framing trade places — push-in becomes pull-out instantly.

I can't see the green and red boxes in the viewer?

The overlay isn't on. Click the mode button at the timeline viewer's lower left and choose Dynamic Zoom; once the boxes appear you can drag them, and the Inspector switch turns itself on as you adjust.

Dynamic Zoom or manual keyframes?

For a quick, steady push or pull, Dynamic Zoom wins — no keyframes, always adjustable. For mid-clip speed changes, pauses, or complex paths, keyframe Transform instead.

深度资料：动态缩放 →Deep dive: 动态缩放 →

本卡术语Terms in this card

时间线Timeline 检查器Inspector 关键帧Keyframe 变速Speed 静帧Still 变换Transform