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edu-physics-video

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Use when asked to make an explainer / walkthrough video (讲解视频、解题视频、例题精讲、微课) for a physics problem (物理题: mechanics/力学 受力分析 牛顿定律 斜面 传送带 板块 平抛 圆周 能量 动量, optics/光学 折射, electromagnetism/电磁 带电粒子), from a problem screenshot or text, with Chinese voice-over (GLM-TTS / 智谱 TTS), bilingual zh+en subtitles and blueprint-style canvas animation where the motion follows the real solution — delivered as a browser preview (index.html) first, MP4 export only if the user wants it.

skills/edu-physics-video/SKILL.md

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Source commit 805fdc5dd6bdf942290a7791924bf0ee08f26632

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Network or broad shell
Last checked
Nov 9, 2026

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1,776
Repository last updated
Oct 23, 2026
License
Apache-2.0

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# 物理题讲解视频 (edu-physics-video)

把一道物理题做成 16:9、1920×1080、带中文配音 + 中英双语字幕 + 蓝图风格动画的讲解视频（先给浏览器预览，用户要时再导出 MP4）。流水线与 edu-math-video 相同，区别在**解题方法**和**画面**：先按物理解题流程（建模 → 分段 → 受力 → 选规律 → 求解 → 验算）解对，再让画面把物理过程真实地演出来——力箭头按比例从作用点长出、物体按解析解运动、v-t 图同步生长、摩擦力随运动反向而转向。

```
script.json ──build_audio.py──► build/timeline.json + build/mix.wav + ../<name>.srt
     (旁白)     (GLM-TTS + 合成音乐)          │
anim.js + phys.js + engine.js ◄───────────────┘ (按旁白时间点驱动动画)
     ├──open index.html ──► 浏览器直接播放（预览）
     └──node render.mjs video──► ../<name>.mp4（用户要时才导出）
```

**核心原则：画面跟着旁白走，物理过程在图上真的发生。** 每句旁白都有一个动作把这句物理演出来；每个动画用"第 k 句旁白开始的时刻"`S.at(k, f)` 定时，绝不写死秒数；物体的位置只来自解析解 `x(t)`，用 `simT()` 线性映射时间（可以慢放，不能缓动）。
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