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Punch-in

펀치 인

A modest enlargement of the same shot adds a cut-like beat or makes a detail easier to read.

Also known as: Digital punch-in
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html
<div class="stage"><div class="shot"><div class="paper"><div class="line long"></div><div class="line"></div><div class="line short"></div><div class="stamp">03</div></div><div class="focus"></div></div>
  <div class="caption"><span class="before">ORIGINAL</span><span class="after">PUNCH IN · +18%</span></div>
</div>
css
.stage{position:absolute;inset:0;overflow:hidden;background:#d8d3c8}
.shot{position:absolute;inset:0;display:grid;place-items:center;transform-origin:58% 53%;animation:punch 3.2s steps(1,end) infinite}
.paper{position:relative;width:47%;height:60%;background:var(--surface);border:1px solid var(--line);box-shadow:0 9px 24px #0002;padding:8% 7%}
.line{height:3px;width:76%;margin:9% 0;background:var(--muted);opacity:.45}.line.long{width:92%}.line.short{width:52%}
.stamp{position:absolute;right:10%;top:16%;font:700 clamp(24px,6vw,56px) ui-monospace,monospace;color:var(--accent)}
.focus{position:absolute;left:55%;top:41%;width:15%;height:16%;border:2px solid var(--accent);border-radius:4px;opacity:.75}
.caption{position:absolute;left:12px;bottom:12px;width:170px;height:24px;padding:5px 8px;background:var(--surface);border:1px solid var(--line);font:10px ui-monospace,monospace;letter-spacing:.08em}
.caption span{position:absolute;left:8px;white-space:nowrap}
.after{animation:after 3.2s steps(1,end) infinite}.before{animation:before 3.2s steps(1,end) infinite}
@keyframes punch{0%,34%{transform:scale(1)}35%,84%{transform:scale(1.18)}85%,100%{transform:scale(1)}}
@keyframes before{0%,34%,85%,100%{opacity:1}35%,84%{opacity:0}}
@keyframes after{0%,34%,85%,100%{opacity:0}35%,84%{opacity:1}}
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Crash zoom크래시 줌

A very fast zoom snap creates a jolt of surprise or comedy.

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Scale keyframe스케일 키프레임

Set start and end size values on a timeline, then interpolate the scale between them.

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Ken Burns effect켄 번스 효과

A slow pan or zoom gives a still image the feeling of a moving camera.

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Pan and zoom팬 앤 줌

Chosen start and end points guide one smooth move across a larger screen.

Editors use a punch-in to enlarge the same shot slightly, making it feel like a new cut. The restrained change can punctuate speech or bring a small detail forward without a dramatic camera move.

Duplicate the clip on the timeline and raise the scale in the later segment, or add a short scale keyframe move to one clip. The demo quickly switches between the original framing and a modest crop.

Punch-in is an editing-room description, not a universal control name across tools. It is usually subtler and held longer than a crash zoom.

When to use

Use it to give a spoken point a visual beat or make one part of the same screen easier to read.

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