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01 · Studio examples/hero-lower-third

02 · Source src/compositions/HeroMain.timeline.json

{
  "version": 1,
  "items": [
    { "id": "hero", "from": 0, "durationInFrames": 971,
      "content": { "type": "nested", "composition": "HeroRaw" } },
    { "id": "lower-third", "from": 180,
      "durationInFrames": 168, "name": "Lower third",
      "content": { "type": "nested", "composition": "LowerThird" } },
    { "id": "end-card", "from": 953,
      "durationInFrames": 138,
      "content": { "type": "nested", "composition": "EndCard" } }
  ] }

03 · Render hero.mp4 · 1920×1080 · 23.976 fps

A real project — an After Effects hero rebuilt frame-for-frame as readable composition data and render code. 1091 frames, nested comps, a fitted LUT grade. The MP4 above was rendered by FrameDiff in the browser.

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Traditional editors hide creative decisions inside binary project files. FrameDiff keeps composition documents, timelines, render code, and presets readable, portable, and versioned from the first click.

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Creative data lives in readable composition and timeline JSON; render code stays ordinary HTML, CSS, and TypeScript.

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framediff/main 3 files changed

src/compositions/HeroMain.timeline.jsonRetime the lower-third entrance

+2 −2

src/compositions/LowerThird.comp.jsonWarm the highlight rolloff

+4 −4

public/clips/s07.mp4Replace the pickup shot

binary

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Video editing,diffable.

Your edit should be as open as your codebase.