Architecture Video Generator

Generates and maintains the animated architecture overview video in docs/architecture-video/ using Remotion (React-based video framework).

When to use

• User asks to update, regenerate, or modify the architecture video
• User asks to add or remove scenes from the video
• Codebase architecture has changed and the video needs to reflect it
• User wants to preview or render the video

Before making changes

1. Read current architecture

Read these files to understand the current system architecture:

• CLAUDE.md — top-level project structure, module specs, key traits, principles
• crates/Architecture.md — the Reborn stack thesis and component map (the current architecture; lead the video with this)
• crates/AGENTS.md — the Reborn crate routing map
• crates/ironclaw_engine/CLAUDE.md — engine v2 primitives (v1-only legacy; present as the retiring stack, not the target)
• src/agent/CLAUDE.md — v1 agent loop architecture (legacy)
• crates/ironclaw_llm/CLAUDE.md — canonical LLM provider architecture
• src/db/CLAUDE.md — database dual-backend architecture
• src/tools/README.md — v1 tool system architecture
• src/workspace/README.md — v1 workspace/memory architecture

2. Read current video scenes

Read docs/architecture-video/src/IronClawArchitecture.tsx to understand current scene order, durations, and transitions. Then read individual scenes in docs/architecture-video/src/scenes/ to see what's already covered.

3. Identify gaps

Compare the architecture documentation with what the video covers. Look for:

• New modules or traits added since the video was last updated
• Renamed or restructured components
• New data flows or state machines
• Removed or deprecated features

Video project structure

docs/architecture-video/
├── package.json              # Remotion deps
├── remotion.config.ts        # Build config
├── src/
│   ├── Root.tsx              # Remotion entry — registers the composition
│   ├── IronClawArchitecture.tsx  # Main composition — scene order + transitions
│   ├── theme.ts              # Color palette + font constants
│   ├── components/
│   │   └── Code.tsx          # Syntax-highlighted code block component
│   └── scenes/               # One file per scene
│       ├── TitleScene.tsx
│       ├── PrimitivesScene.tsx
│       ├── ExecutionLoopScene.tsx
│       ├── CodeActScene.tsx
│       ├── ThreadStateScene.tsx
│       ├── SkillsPipelineScene.tsx
│       ├── ToolDispatchScene.tsx
│       ├── ChannelsRoutingScene.tsx
│       ├── ChannelImplsScene.tsx
│       ├── TraitsScene.tsx
│       ├── LlmDecoratorScene.tsx
│       └── OutroScene.tsx

Render script: scripts/render-architecture-video.sh

Current scene inventory (12 scenes, ~82s at 30fps)

Remotion patterns used in this project

All animations MUST be driven by useCurrentFrame() — never CSS transitions or Tailwind animation classes.

Animation pattern

const frame = useCurrentFrame();
const { fps } = useVideoConfig();

const opacity = interpolate(frame, [0, 0.5 * fps], [0, 1], {
  extrapolateRight: "clamp",
});
const y = interpolate(frame, [0, 0.5 * fps], [30, 0], {
  extrapolateRight: "clamp",
  easing: Easing.bezier(0.16, 1, 0.3, 1),
});

Staggered list pattern

For items that appear one by one:

{items.map((item, i) => {
  const delay = 0.4 + i * 0.3; // seconds
  const opacity = interpolate(
    frame,
    [delay * fps, (delay + 0.35) * fps],
    [0, 1],
    { extrapolateLeft: "clamp", extrapolateRight: "clamp" }
  );
  return <div style={{ opacity }} key={item.id}>...</div>;
})}

Scene transitions

Scenes are composed using TransitionSeries with alternating fade() and slide({ direction: "from-right" }) transitions, each 15 frames (0.5s):

<TransitionSeries>
  <TransitionSeries.Sequence durationInFrames={s(8)}>
    <MyScene />
  </TransitionSeries.Sequence>
  <TransitionSeries.Transition
    presentation={fade()}
    timing={linearTiming({ durationInFrames: 15 })}
  />
  <TransitionSeries.Sequence durationInFrames={s(7)}>
    <NextScene />
  </TransitionSeries.Sequence>
</TransitionSeries>

Code blocks

Use the CodeBlock component from ../components/Code for syntax-highlighted code:

import { CodeBlock } from "../components/Code";

<CodeBlock code={`pub trait Channel: Send + Sync {
  async fn start(&self) -> Result<MessageStream>;
}`} fontSize={13} />

Theme

Import colors and fonts from ../theme:

import { COLORS, FONTS } from "../theme";

// Available colors:
// bg, bgLight, primary, primaryLight, accent, accentLight,
// success, danger, text, textMuted, border, purple, cyan, pink

// Available fonts:
// mono (monospace), sans (system-ui)

Adding a new scene

1. Create src/scenes/MyNewScene.tsx following existing patterns
2. Export the component
3. Import in IronClawArchitecture.tsx
4. Add to the SCENES array with duration and transition type
5. TOTAL_DURATION auto-computes from the array
6. Verify with: npx remotion still IronClawArchitecture --scale=0.25 --frame=<N>

Scene template

import {
  AbsoluteFill,
  interpolate,
  useCurrentFrame,
  useVideoConfig,
  Easing,
} from "remotion";
import { COLORS, FONTS } from "../theme";

export const MyNewScene: React.FC = () => {
  const frame = useCurrentFrame();
  const { fps } = useVideoConfig();

  const headingOpacity = interpolate(frame, [0, 0.4 * fps], [0, 1], {
    extrapolateRight: "clamp",
  });

  return (
    <AbsoluteFill
      style={{
        backgroundColor: COLORS.bg,
        fontFamily: FONTS.sans,
        padding: 60,
      }}
    >
      <div
        style={{
          opacity: headingOpacity,
          fontSize: 42,
          fontWeight: 700,
          color: COLORS.text,
          marginBottom: 4,
        }}
      >
        <span style={{ color: COLORS.primary }}>Title</span> — subtitle
      </div>
      {/* Scene content */}
    </AbsoluteFill>
  );
};

Verification

After making changes:

1. Type check: cd docs/architecture-video && npx tsc --noEmit
2. Spot check frames: npx remotion still IronClawArchitecture --scale=0.25 --frame=<N>
   • At 30fps, frame N corresponds to time N/30 seconds
   • Check at least one frame per modified scene
3. Full render: ./scripts/render-architecture-video.sh [output-path]
4. Preview in browser: cd docs/architecture-video && npm run dev

Design guidelines

• Dark theme (slate-900 background) — matches typical developer tooling
• Each scene has a colored heading keyword using a trait-appropriate color
• File:line references in muted monospace below headings
• Data flows use staggered animation (0.3-0.5s delays between items)
• State machines use SVG with animated dash-offset for arrows
• Code blocks use the CodeBlock component with syntax highlighting
• Keep scene duration proportional to content density (7-10s typical)
• Total video should stay under 120s for attention retention