# 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.

- **Type:** [Effect](https://varg.ai/how-to/effects.md) · [Transitions](https://varg.ai/how-to/browse/skills/transitions.md)
- **Slug:** `whip-swipe`
- **Status:** live
- **Publisher:** HeyGen (community)
- **License:** Apache-2.0
- **Source:** https://github.com/heygen-com/hyperframes/tree/main/registry/blocks/whip-pan
- **Works in:** Claude Code, Claude.ai, Codex, Cursor, OpenClaw, Gemini CLI, Any MCP client, varg Studio
- **Requires:** ffmpeg, HyperFrames (npx hyperframes), Remotion, CapCut (by hand)
- **Cost:** Free — the take renders locally; generated footage, if any, bills by the model

## What it does

Built on [Whip Pan](https://github.com/heygen-com/hyperframes/tree/main/registry/blocks/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):
```bash
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):
```html
<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):
```tsx
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

- [Whip Pan](https://skills.varg.ai/component/hf.whip-pan/) (hyperframes): npx hyperframes add whip-pan
- [Whip Pan Cut](https://skills.varg.ai/component/hf.whip-pan-cut/) (hyperframes): npx hyperframes add whip-pan-cut
- [Whip Pan](https://skills.varg.ai/component/remocn.whip-pan/) (remocn): npx shadcn@latest add @remocn/whip-pan
- [Motion Blur](https://skills.varg.ai/component/hf.motion-blur/) (hyperframes): npx hyperframes add motion-blur

### Where this comes from

- [FFmpeg filters: xfade](https://ffmpeg.org/ffmpeg-filters.html#xfade)
- [FFmpeg filters: gblur](https://ffmpeg.org/ffmpeg-filters.html#gblur)
- [remocn: Whip Pan](https://remocn.dev/docs/transitions/whip-pan)
- [HyperFrames: @hyperframes/shader-transitions](https://hyperframes.heygen.com/packages/shader-transitions)
- [CapCut Help: transitions](https://www.capcut.com/help/transitions-in-capcut)
- [CapCut: transition categories](https://capcut.com/resource/add-video-transition-online)
- [CapCut transition names + default durations (VectCut metadata)](https://github.com/sun-guannan/VectCutAPI/blob/main/pyJianYingDraft/metadata/capcut_transition_meta.py)
- [CapCut transition names incl. Pro (pyCapCut metadata)](https://github.com/GuanYixuan/pyCapCut/blob/main/pycapcut/metadata/transition_meta.py)

## Use when

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

## Not for

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

## Install

- Claude Code: `claude plugin marketplace add vargHQ/skills && claude plugin install varg@varg`
- Codex: `npx skills add vargHQ/skills --skill varg-video-edit-library -a codex -y`
- Cursor: `npx skills add vargHQ/skills --skill varg-video-edit-library -a cursor -y`

## 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))

## More transitions skills

- [editly](https://varg.ai/how-to/skills/editly.md): Declarative JSON5 video editing CLI/API: clips, titles, transitions, audio mixing, rendered with ffmpeg.
- [Mix (Cross Dissolve)](https://varg.ai/how-to/skills/mix-dissolve.md): The two shots blend through each other. The quietest transition: "time passes" or "this continues".
- [Dip to Black](https://varg.ai/how-to/skills/black-fade.md): A fades to black, then B fades up. Marks the end of a section or a bigger jump in time.
- [White Flash](https://varg.ai/how-to/skills/white-flash.md): The frame blows out to white for a moment and opens on the next shot. Energy, memory or a camera snap.
- [Pull In (Zoom In)](https://varg.ai/how-to/skills/pull-in-zoom.md): The camera rushes into shot A and lands, still moving forward, in shot B. The signature short-form transition.
- [Pull Out (Zoom Out)](https://varg.ai/how-to/skills/pull-out-zoom.md): The camera jerks backwards out of shot A and keeps pulling back as shot B settles in.

## Run the generation on varg

varg is one API key for the models these skills drive — Seedance 2.5, Kling 4, Veo 3.1, Wan 3, Nano Banana 2.1, GPT Image 2.5, ElevenLabs v4 and 200+ more — billed in credits, with a cost estimate before anything runs.

- Claude Code: `claude plugin marketplace add vargHQ/skills && claude plugin install varg@varg` (skill + hosted MCP)
- Codex, Cursor, Gemini CLI, OpenClaw: `npx skills add vargHQ/skills --skill varg-ai -a <agent> -y`
- Grok and any agent that reads SKILL.md: `npx skills add vargHQ/skills --skill varg-ai`, or point it at the skill's SKILL.md
- Claude.ai, ChatGPT, any MCP client: connect `https://mcp.varg.ai/mcp`
- API key: https://varg.ai/dashboard/api · Model specs: https://varg.ai/models/llms.txt