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Export frame #46

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995b6d1
feat: add export frame for reframing with dimmed overscan preview
Jul 28, 2026
8284214
fix: export frame drag hit targets and handle styling
Jul 28, 2026
446420b
fix: fix disabled realtime rendering when frmae was off
Jul 28, 2026
88eafbe
fix: valid CodeRabbit findings
Jul 28, 2026
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11 changes: 10 additions & 1 deletion CLAUDE.md
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Original file line number Diff line number Diff line change
Expand Up @@ -154,7 +154,10 @@ Examples in `library/svg/`: `sparkles.svg` (loop), `lower-third.svg`,
```jsonc
{
"name": "My Edit",
"width": 1280, "height": 720, "fps": 30, // canvas/export settings
"width": 1280, "height": 720, "fps": 30, // composition canvas (clip coords use this space)
"exportFrame": { "x": 405, "y": 0, "w": 405, "h": 720 }, // optional delivery crop
// ^ omit = export the full canvas. Preview dims outside this rect; Fast export crops
// JPEGs to w×h. Clip x/y/scale stay relative to the composition center, not the frame.
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"background": "#000000", // canvas color behind all clips (optional)
"revision": 7, // bump on every write!
"markers": [ { "t": 2.5 }, { "t": 5.0, "label": "drop" } ],
Expand Down Expand Up @@ -520,6 +523,12 @@ or simply `transitionOut: {type:"fade", duration:3}`.

**Pulse / emphasis**: `keyframes: { scale:[{t:0,v:1},{t:0.3,v:1.12},{t:0.6,v:1}] }`.

**Reframe horizontal → vertical**: keep a wide composition canvas and crop for
delivery — e.g. `width:1920, height:1080` with
`exportFrame:{x:656,y:0,w:608,h:1080}` (9:16 fitted to canvas height). Position
footage with clip `x`/`y`/`scale`; the export frame can be dragged in the UI.
Omit `exportFrame` to export the full canvas.

**Vertical reel**: set project `width:1080, height:1920`; use the UI's safe-area
guides (▦) to keep captions out of platform UI zones.

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4 changes: 4 additions & 0 deletions README.md
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Expand Up @@ -58,6 +58,10 @@ same time.
frame-step retargets the held slice; meters stay live. **Play** / **Pause**
turns it off.
- Canvas aspect presets (16:9, 9:16 reels, 4:5, 1:1) + safe-area guides
- **Export frame / reframing** — composition canvas can be larger than the delivery
crop (`exportFrame` in `project.json`). Preview dims the overscan; drag the
**Export frame** handle to reframe (e.g. 16:9 canvas → 9:16 export). Fast export
crops to the frame; Realtime export is disabled while a frame is set
- **Program Monitor zoom** — mouse-wheel over the preview zooms the composition
toward the cursor (fit → up to **2 screen pixels per canvas pixel**). Magnified
view uses **native scrollbars** so overflow stays reachable; middle-click or
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