# Diagonal Wipe — effect skill for transitions

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A wipe that enters from a corner on a diagonal. Variants: diagtl, diagtr, diagbl, diagbr.

- **Type:** [Effect](https://varg.ai/how-to/effects.md) · [Transitions](https://varg.ai/how-to/browse/skills/transitions.md)
- **Slug:** `xfade-diagonal-wipe`
- **Status:** live
- **Publisher:** pschroen · GL Transitions (community)
- **License:** MIT
- **Source:** https://github.com/gl-transitions/gl-transitions/blob/master/transitions/DirectionalWarp.glsl
- **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 [DirectionalWarp](https://github.com/gl-transitions/gl-transitions/blob/master/transitions/DirectionalWarp.glsl) by pschroen (gl-transitions), MIT. The write-up and recipes below are varg's.

A slanted edge sweeps from one corner to the opposite one.

**When:** Sports, energetic promos, splitting attention between two subjects.

**Watch out:** Following a diagonal wipe with a horizontal one — pick one geometry per video.

**Timing:** 0.4–0.6 s.

**Also called:** Diagonal (CapCut), Slash wipe

### In FFmpeg

Both inputs need the same size, frame rate, timebase, SAR and pixel format (`settb=AVTB` fixes the timebase error that `fps` alone leaves). `offset` is where the transition starts on the first clip's timeline (its length minus the overlap).

```bash
ffmpeg -i a.mp4 -i b.mp4 -filter_complex \
 "[0:v]fps=30,scale=1920:1080,setsar=1,settb=AVTB,format=yuv420p[a];[1:v]fps=30,scale=1920:1080,setsar=1,settb=AVTB,format=yuv420p[b];\
  [a][b]xfade=transition=diagtl:duration=0.5:offset=4.5[v];[0:a][1:a]acrossfade=d=0.5[a]" \
 -map "[v]" -map "[a]" out.mp4
```

### In HyperFrames

Clip-path polygon tween from a corner, or `glt.directional-warp` for a smeared diagonal.

### In Remotion

```tsx
<TransitionSeries.Transition presentation={wipe({ direction: 'from-top-left' })} timing={linearTiming({ durationInFrames: 15 })} />
```

### In CapCut

Transitions → Slide → **Diagonal wipe**.

### Ready-made components

- [DirectionalWarp](https://skills.varg.ai/component/glt.directional-warp/) (gl-transitions): npm install gl-transitions

### Where this comes from

- [FFmpeg filters: xfade](https://ffmpeg.org/ffmpeg-filters.html#xfade)
- [FFmpeg xfade gallery (trac wiki)](https://trac.ffmpeg.org/wiki/Xfade)
- [Remotion transition presentations](https://www.remotion.dev/docs/transitions/presentations)

## Use when

- Sports, energetic promos, splitting attention between two subjects.

## Not for

- Following a diagonal wipe with a horizontal one — pick one geometry per video.

## 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/c942c135d952/take-xfade-diagonal-wipe.mp4 — diagtl between two shots, with the timeline strip of the edit. Footage: WING IT! (2023), 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 · WING IT! (2023) + 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