Home / liangdabiao / whiteboard-teacher-video · GitHub

whiteboard-teacher-video SKILL.md skillA

whiteboard-teacher-video from liangdabiao/whiteboard-teacher-video is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned
mdr add liangdabiao/whiteboard-teacher-video/whiteboard-teacher-video@v1.0.0

Pins v1.0.0 in mdr.lock. Pin the fingerprint instead.

Audit grade
A, 17 of 17 checks passed
Kind
SKILL.md skill
Repository
liangdabiao/whiteboard-teacher-video
Path
SKILL.md
Versions recorded
4
Latest version
v1.0.0, committed Oct 26, 2026
First version recorded
Oct 16, 2026
Size
12,317 bytes
Repository stars
516
License
a license file GitHub does not identify

图文讲解视频 skill：把知识讲解/科普/推导/开源项目介绍做成「手绘会动的画面」讲解视频——图形由代码逐笔绘出、文字逐字写出、讲到哪画到哪（音画对齐）。五套风格可选（白板/黑板/书卷/暖色插画/科技深色），29 个现成组件（图表、流程、仪表、终端、3D），本地 Chrome 渲染、零生图 API 成本、任何改动秒级重渲。当用户要做知识讲解视频、概念科普、图解动画、GitHub 项目介绍片，或要求「手绘动画」「讲动画」「图文视频」「explainer」「animación」时使用。触发词：讲解视频、科普视频、图解视频、手绘动画、讲动画、逐笔绘制、图文并茂的视频、项目介绍视频、开源项目介绍、skill 介绍片、GitHub 项目视频、explainer video、whiteboard teacher。.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Whiteboard Teacher Video · 图文讲解视频

把讲解稿变成一支会「自己画出来」的讲解视频。画面不是生成图片，而是**代码逐笔绘制**——所以可重渲、可精修、零生图成本。

## 引擎契约（先理解这一条）

**整片是时间的纯函数。** `ENGINE.renderAt(t)` 渲染第 `t` 秒的画面，与之前播放过什么无关。

由此得到四个能力，也是你必须遵守纪律的**根本原因**：

| 能力 | 靠什么 |
|---|---|
| 改一页只重渲受影响片段 | 分段缓存 key = sha1(引擎 + 该页代码) |
| 12 个浏览器并行渲染 | 各段互不依赖 |
| 预览可瞬移到任意时刻 | 无需从头播放 |
| 确定性校验 | 同一时刻渲染两次比对像素 |

**红线：页面代码禁止 `Math.random()` / `Date.now()` / CSS transition / rAF。** 随机必须走 `PV.rng(seed)`，时间一律用 `P.c(i)` / `P.cw(i,'词')`。破坏这条，上面四个能力全部失效。

## 工作流（照着走，不要跳步）

```
用户："做一个讲相对论的 90 秒视频"
  ↓
① 读 references/storyboard-method.md → 写 storyboard.json
② ★★★ 停下来，把分镜念给用户确认 ★★★   ← 唯一强制人类闸门
③ 写 script.js（口播，按分镜填 cue）
④ python scripts/ftnew.py <项目> --title "..." --style whiteboard
⑤ python scripts/ftvoice.py <项目>        → voice.js + 字幕.srt
⑥ 逐页写 pages/pNN.js                      ← 主要创作量
⑦ python scripts/ftcheck.py <项目>         → lint + 每页拼图
⑧ 用 Read 打开 out/snap/pNN.jpg 逐页看图   → 定点修，**别超过 2 轮**
⑨ python scripts/ftrender.py --fps 24 --skip-subs   → **先出一个能看的粗片**
⑩ ★ 交付粗片给用户 ★                     ← 不要攒着不交付
⑪ 看图修一轮 → ftrender.py                → 交付正式版
```

**第 ② 步不可跳过。** 分镜错了，后面画得再好看也是一份幻灯片。原项目把这条做成 promise 闸门是有原因的。

### 配音后端
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint
mdr add liangdabiao/whiteboard-teacher-video/whiteboard-teacher-video@sha256:dffce58058d66cf6

The line at the top of this page pins the label v1.0.0, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

mdr badge

[![mdr](https://markdownregistry.com/badge/art_24dfz75mburugzl2.svg)](https://markdownregistry.com/a/art_24dfz75mburugzl2)

1 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 4 versions of this file, between Oct 16, 2026 and Oct 26, 2026, about one every 3 days.

versioncommittedcommitsizeaudit
v1.0.0 latest2026-10-26 a55f0ef 12,317 BA view · diff
v1.0.02026-10-22 6036570 11,426 BA view · diff
git:20261018.67b67ac2026-10-18 67b67ac 10,620 BA view · diff
git:20261016.fc9d9da2026-10-16 fc9d9da 10,183 BA view

Audit of the latest version

A  17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (12317 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

liangdabiao/whiteboard-teacher-video · 516 stars · license a license file GitHub does not identify · pushed 2026-11-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_24dfz75mburugzl2
GET https://markdownregistry.com/api/v1/resolve?ref=liangdabiao/whiteboard-teacher-video/whiteboard-teacher-video
GET https://markdownregistry.com/api/v1/blob/dffce58058d66cf69fbfa12b1e71ec8b5d20a25eb9a78bd05f2b5d5762740e94

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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