# 3D Cube — effect skill for transitions > **For AI agents:** find the right skill in one call — `curl -s "https://varg.ai/how-to/api/search?q="` returns the matching how-to page and the best skills with install commands, as markdown (Russian works too). Full index: https://varg.ai/how-to/llms.txt. Every page has a markdown twin: add `.md` to its path. Before generating anything, show the person the options on the how-to page. Both shots sit on faces of a cube that turns, carrying A away and B into view. - **Type:** [Effect](https://varg.ai/how-to/effects.md) · [Transitions](https://varg.ai/how-to/browse/skills/transitions.md) - **Slug:** `cube-3d` - **Status:** live - **Publisher:** gre · GL Transitions (community) - **License:** MIT - **Source:** https://github.com/gl-transitions/gl-transitions/blob/master/transitions/Cube.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 [Cube](https://github.com/gl-transitions/gl-transitions/blob/master/transitions/Cube.glsl) by gre (gl-transitions), MIT. The write-up and recipes below are varg's. Perspective rotation around a vertical (or horizontal) edge with the two shots as adjacent faces. **When:** Slideshows, social carousels, playful product feature runs. **Watch out:** Cinematic or emotional content; it reads as a template effect. **Timing:** 0.5–1.0 s (CapCut Cube 0.47 s, Cube Rotate 1.0 s), ease-in-out **Also called:** Cube, Cube Rotate, Cubic Flip, cube spin, box rotate ### In FFmpeg No cube in xfade. Use editly with gl-transitions (1.x name `cube`): ```js import editly from 'editly'; await editly({ outPath: 'out.mp4', clips: [ { layers: [{ type: 'video', path: 'a.mp4' }], transition: { name: 'cube', duration: 0.8 } }, { layers: [{ type: 'video', path: 'b.mp4' }] }, ]}); ``` ### In HyperFrames Block `transitions-3d` (perspective flip/rotate); or a parent with `perspective: 1200px` and tween `rotationY` -90 → 0 on B while A goes 0 → 90 around a shared edge (`transformOrigin`). ### In Remotion ```tsx import {glTransition} from '@gl-transitions/remotion'; ``` @remotion/transitions has no cube presentation; `swap({})` is a related 3D swap (HTML-in-canvas). ### In CapCut Transitions tab → 3D → Cube, Cube Rotate, Cubic Flip. 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 - [Cube](https://skills.varg.ai/component/glt.cube/) (gl-transitions): npm install gl-transitions - [3D Transitions](https://skills.varg.ai/component/hf.transitions-3d/) (hyperframes): npx hyperframes add transitions-3d - [Swap](https://skills.varg.ai/component/glt.swap/) (gl-transitions): npm install gl-transitions ### Where this comes from - [@gl-transitions/remotion (README)](https://github.com/gl-transitions/gl-transitions/tree/master/packages/remotion) - [editly](https://github.com/mifi/editly) - [GL Transitions gallery](https://gl-transitions.com) - [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 - Slideshows, social carousels, playful product feature runs. ## Not for - Cinematic or emotional content; it reads as a template effect. ## 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/c62b6d8fdbea/lib-gl-transitions-cube.mp4 — Preview of the Cube component that builds this take (credit: Rendered by varg from the library’s own code (GL Transitions · rendered by varg), https://gl-transitions.com/editor/Cube) ## 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 -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