No video editor needed: dev turns app UI docs into a 30s motion graphics video with Codex + GPT-6.1 Sol
No-Hunter9792 · reddit · 2026-10-04
A developer documented Agent HUD's iPhone UI (layouts, interactions), had Codex + GPT-6.1 Sol turn the notes into a design book, then the book into a 30-second motion graphics video — never opening an editor. Music came from Suno via Codex browser use. Key lessons: the first cut looked like a slide deck until he kept the book's typography and page structure while animating real UI inside a 3D phone; timing needed the most iteration via second-level feedback (slow the fold, hold layouts, cut transitions); Codex eventually built a browser timing workbench for adjusting durations and pauses. Takeaway: the first render is just something to react to — quality comes from watching and describing specific problems. Source: github.com/jazzenchen/agent-hud-open
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