Whip Swipe — effect skill for transitions

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A fast synthetic pan with heavy motion blur pushes A off and B in. Fakes a whip pan between any two shots.

What it does

Built on Whip Pan by HeyGen (HyperFrames), Apache-2.0. The write-up and recipes below are varg's.

Both images streak sideways at high speed and the next shot snaps into place.

When: Travel, lifestyle, energetic product edits, on a whoosh SFX; matches footage that already moves sideways.

Watch out: Direction changes between consecutive whips, and whips longer than 0.4 s (they read as slides).

Timing: 0.2–0.35 s (6–10 frames at 30 fps), ease-in-out with the blur peaking mid-way

Also called: Swipe Left, Whip Tear, Woosh, whip pan transition, swish, swipe transition

In FFmpeg

Push with horizontal motion blur over the transition window (A is 5 s, T = 0.25 s):

ffmpeg -i a.mp4 -i b.mp4 -filter_complex \
"[0:v]fps=30,settb=AVTB,format=yuv420p[a];[1:v]fps=30,settb=AVTB,format=yuv420p[b];\
 [a][b]xfade=transition=slideleft:duration=0.25:offset=4.75,\
gblur=sigma=40:sigmaV=0:steps=2:enable='between(t,4.75,5.0)'[v]" -map "[v]" out.mp4

Add a whoosh: [2:a]adelay=4700:all=1 mixed in with amix.

In HyperFrames

Shader whip-pan from @hyperframes/shader-transitions placed at the cut (t = 4 s):

<div id="s1" class="scene" style="background:#0a0a0a"><video src="a.mp4" muted playsinline></video></div>
<div id="s2" class="scene" style="background:#0a0a0a"><video src="b.mp4" muted playsinline></video></div>
<script src="https://cdn.jsdelivr.net/npm/@hyperframes/shader-transitions/dist/index.global.js"></script>
<script>
  const tl = HyperShader.init({ bgColor: "#0a0a0a", scenes: ["s1", "s2"],
    transitions: [{ time: 4, shader: "whip-pan", duration: 0.35 }] });
  window.__timelines = window.__timelines || {}; window.__timelines["main"] = tl;
</script>

Each .scene needs an explicit background-color equal to bgColor. Or install the ready block: npx hyperframes add whip-pan. DOM version with matched velocity and capped motion blur: npx hyperframes add whip-pan-cut.

In Remotion

remocn whipPan() presentation (direction left/right/up/down, blur 24 px, ~26 frames):

import {whipPan} from '@/components/remocn/whip-pan';
<TransitionSeries.Transition timing={linearTiming({durationInFrames: 26})} presentation={whipPan()} />

Without it: slide({direction: 'from-right'}) with linearTiming({durationInFrames: 8}).

In CapCut

Transitions tab → Camera / Slide → Swipe Left, Whip Tear, Woosh, 2-Screen Swipe. Desktop: drag the tile onto the cut between two clips and set Duration in the right panel ("Apply to all" reuses it on every cut). Mobile: tap the small white square between clips, pick the transition, drag the duration slider, tap ✓. Tab labels and placement change between versions and regions.

Ready-made components

Where this comes from

Use when

Not for

Install

Example output

https://s3.varg.ai/how-to/previews/2767af908738/take-whip-swipe.mp4 — whip between two shots, with the timeline strip of the edit. Footage: Coffee Run (2020), Blender Studio | studio.blender.org, CC BY 4.0; Coffee Run (2020), Blender Studio | studio.blender.org, CC BY 4.0. (credit: Rendered by varg · Coffee Run (2020))

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