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87 lines
3.0 KiB
Python
87 lines
3.0 KiB
Python
# praisonai: skip=true
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"""Motion Graphics — Basic HTML/GSAP → MP4 render (no LLM required).
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This example drives the `HtmlRenderBackend` directly with a hand-authored
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HTML/GSAP composition. It renders to a real MP4 via headless Chromium +
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bundled ffmpeg, with no API keys needed.
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Requirements:
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pip install praisonai-tools[video-motion]
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playwright install chromium
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Verified end-to-end: produces 1920x1080 @ 30fps H.264 MP4 in ~5–10 seconds.
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"""
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import asyncio
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from pathlib import Path
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from praisonai_tools.video.motion_graphics import HtmlRenderBackend, RenderOpts
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HTML = """
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<!DOCTYPE html>
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<html>
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<head>
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<script src="https://cdnjs.cloudflare.com/ajax/libs/gsap/3.12.2/gsap.min.js"></script>
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<style>
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body { margin:0; padding:0; background:#0f172a; overflow:hidden;
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font-family: -apple-system, Arial, sans-serif; }
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#stage { width:1920px; height:1080px; position:relative; }
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.title { font-size:96px; font-weight:800; color:#f8fafc;
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position:absolute; top:50%; left:50%;
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transform:translate(-50%,-50%); opacity:0; }
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.subtitle { font-size:44px; color:#94a3b8;
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position:absolute; top:62%; left:50%;
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transform:translate(-50%,-50%); opacity:0; }
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.dot { width:32px; height:32px; border-radius:50%; background:#38bdf8;
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position:absolute; top:78%; left:50%;
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transform:translate(-50%,-50%); opacity:0; }
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</style>
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</head>
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<body>
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<div id="stage" data-duration="4.0">
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<div class="title">PraisonAI</div>
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<div class="subtitle">Motion Graphics Pipeline</div>
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<div class="dot"></div>
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</div>
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<script>
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const tl = gsap.timeline({ paused: true });
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tl.to(".title", { duration: 0.8, opacity: 1, y: -30, ease: "power3.out" })
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.to(".subtitle", { duration: 0.7, opacity: 1, y: -20, ease: "power3.out" }, "-=0.3")
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.to(".dot", { duration: 0.5, opacity: 1, scale: 2, ease: "back.out(2)" }, "-=0.2")
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.to(".dot", { duration: 0.4, x: 200, ease: "power2.inOut" })
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.to(".dot", { duration: 0.4, x: -200, ease: "power2.inOut" })
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.to(".dot", { duration: 0.4, x: 0, ease: "power2.inOut" })
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.to([".title",".subtitle",".dot"],
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{ duration: 0.5, opacity: 0, ease: "power2.in" });
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// Required: export timeline(s) for the render backend to drive.
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window.__timelines = [tl];
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</script>
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</body>
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</html>
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"""
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async def main() -> None:
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out = Path("/tmp/motion_graphics_demo")
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out.mkdir(exist_ok=True)
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(out / "index.html").write_text(HTML)
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backend = HtmlRenderBackend(base_dir=out)
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lint = await backend.lint(out)
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print(f"Lint: ok={lint.ok} messages={lint.messages}")
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opts = RenderOpts(output_name="praisonai_demo.mp4", fps=30, quality="standard")
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print("Render: ...", flush=True)
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result = await backend.render(out, opts)
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if result.ok:
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print(f"Render: OK path={result.output_path} size={result.size_kb} KB")
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else:
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print(f"Render: FAIL stderr={result.stderr}")
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if __name__ == "__main__":
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asyncio.run(main())
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