Egg-shaped mask expands to full frame
After a card, the footage returns inside a soft egg-shaped portrait mask on cream, holds about 1 s, then the mask swells to the full frame in about 0.3 s. Ease back from a graphic card into the speaker with a rounded, friendly reveal instead of a hard cut.
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Use this transition between my clips: "Egg-shaped mask expands to full frame" from the 24fps video editor library.
Preset JSON: https://24fps.dev/video-editor/transitions/egg-mask-footage-expand-to-full-e2x/preset.json (pass its "preset" to the engine).
Engine (MIT, no dependencies, ES module): https://24fps.dev/editor/engine.js. Download the engine next to your page (curl -O) rather than importing cross-origin, then import { mount } from "./engine.js" in a <script type="module"> served over http.
Wiring: root = a position:relative box at the video's size. media = { a, b }: two wrappers holding clip A and clip B, both filling the root. Clip A plays first; the cut happens at preset.at (1.2s) over preset.dur (0.3s), so start clip B at preset.at. Then const fx = mount(root, { kind: "transition", preset, media }) and call fx.render(seconds) every frame. It is seek-safe: drive it from the GSAP timeline in HyperFrames or call render(frame / fps) in Remotion. Before capturing frames, await (fx.ready ?? document.fonts.ready).
Field reference: https://24fps.dev/video-editor/llms.txt. Keep sizes as fractions of the frame height so it works at any resolution. Credit: 24fps.dev/video-editor- Same idea
- Also called: Sketch (AI Edit)
- Technique
- Common AI-edit pattern: footage shrinks to an organic rounded mask on a plain card, then expands back to full screen
- Footage
- Man talking to camera, Pexels