Charlie Holtz

Charlie Holtz · Launch Video Breakdown: Hook, Pacing & Motion Design

We've re-built Conductor from scratch to make it twice as fast. Creating tabs, switching workspaces, and rendering files are all 50% faster, memory usage is lower, and the app is 150 MB smaller. In…

Consumer & AppsLaunchApril 23, 2026@charlieholtz
0:00 · The Hook · Initial Code Diff & Performance Tease
0:00 / 0:00

Scene-by-scene timeline & spoken transcript

  1. The Hook

    Initial Code Diff & Performance Tease

    “(No spoken dialogue — A sustained, evolving pad sound with a low-frequency drone creates an atmospheric mood. A subtle, high-frequency synth sweep builds in intensity, leading to a prominent sub-bass impact.)”

    On screen
    cbh123/composer-overlay-diffs All changes Layout Diffs Review works... Chat with AI src/ui/components/fileEditor/CodeMirrorEditor.tsx 202 unmodifed lines 202 203 204 205 206 207 208 209 210 211 95 unmodifed lines 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 51 unmodifed lines 436 437 438 439 Sending to Layout Diffs Ask to make changes @mention files, run /commands Opus 4.7 M High src/ui/components/fileEditor/FileEditor.tsx src/ui/components/imageFileContent.tsx src/ui/components/grid/Grid.tsx src/ui/components/diff/DiffContent.tsx src/ui/components/imageDiffContent.tsx src/ui/components/diff/PierreDiff.tsx src/ui/components/SvgContent.tsx src/ui/pages/WorkspacePage.tsx Setup Run Scripts MCP Run Commit and push All files Changes Checks Review src/ui/components/fileEditor/CodeMirrorEditor.tsx src/ui/components/fileEditor/FileEditor.tsx src/ui/components/imageFileContent.tsx src/ui/components/grid/Grid.tsx src/ui/components/diff/DiffContent.tsx src/ui/components/imageDiffContent.tsx src/ui/components/diff/PierreDiff.tsx src/ui/components/SvgContent.tsx src/ui/pages/WorkspacePage.tsx Next unread Run workspace Test your changes here. (value) => onSaveRef.current.(value), onOpenSearch: () openSearch(), isReadOnly: false, enableSearch: true, overlayPaddingBottom: true, }, [mode, openSearch], }, }, onSave, openSearch, isReadOnly, enableSearch, overlayPaddingBottom = false, }, mode: EditorThemeMode, onSave: (value: string) => void, onOpenSearch: () => void, isReadOnly: boolean, enableSearch: boolean, overlayPaddingBottom: boolean; }, EditorState, EditorState.tabSize.of(4), lineHeight: "1.5", },".cm-content": { caretColor: "hsl(var(-- Next unread Run workspace Test your changes here. (value) => onSaveRef.current.(value), onOpenSearch: () openSearch(), isReadOnly: false, enableSearch: true, overlayPaddingBottom: true, }, [mode, openSearch], }, }, onSave, openSearch, isReadOnly, enableSearch, overlayPaddingBottom = false, }, mode: EditorThemeMode, onSave: (value: string) => void, onOpenSearch: () => void, isReadOnly: boolean, enableSearch: boolean, overlayPaddingBottom: boolean; }, EditorState, EditorState.tabSize.of(4), lineHeight: "1.5", },".cm-content": { caretColor: "hsl(var(--
    Camera
    Static overhead shot of a desktop IDE, focused on a code diff view. The camera maintains a fixed, slightly elevated perspective.
    Motion
    Subtle UI element highlighting and text changes within the code editor. A downward-pointing arrow icon appears at the bottom center, indicating a user interaction or a call to action for scrolling/navigation.
  2. Feature Teaser

    Rapid Code Navigation & Performance

    “(No spoken dialogue — A resonant, metallic-like synth texture slowly fades after the sub-bass impact. Another sub-bass impact occurs at 00:04, accompanied by a short, percussive synth hit.)”

    On screen
    cbh123/composer-overlay-diffs All changes Layout Diffs Review works... Chat with AI src/ui/components/fileEditor/ImageFileContent.tsx Commit and push All files Changes Checks Review src/ui/components/fileEditor/CodeMirrorEditor.tsx src/ui/components/fileEditor/FileEditor.tsx src/ui/components/imageFileContent.tsx src/ui/components/grid/Grid.tsx src/ui/components/diff/DiffContent.tsx src/ui/components/imageDiffContent.tsx src/ui/components/diff/PierreDiff.tsx src/ui/components/SvgContent.tsx src/ui/pages/WorkspacePage.tsx Setup Run Scripts MCP Run Next unread Run workspace Test your changes here. Next unread Run workspace Test your changes here.
    Camera
    The camera remains static, maintaining the same overhead perspective of the IDE.
    Motion
    The code editor content rapidly scrolls and changes, simulating fast navigation or file switching. The downward arrow icon persists, reinforcing the idea of quick interaction. The UI elements like file tabs update instantly.
  3. Feature Teaser

    Instantaneous Diff Rendering

    “(No spoken dialogue — A short, percussive synth hit follows the sub-bass impact. A final, more pronounced sub-bass impact with a quick decay is present at 00:06.)”

    On screen
    cbh123/composer-overlay-diffs All changes Layout Diffs Review works... Chat with AI src/ui/components/diff/PierreDiff.tsx Commit and push All files Changes Checks Review src/ui/components/fileEditor/CodeMirrorEditor.tsx src/ui/components/fileEditor/FileEditor.tsx src/ui/components/imageFileContent.tsx src/ui/components/grid/Grid.tsx src/ui/components/diff/DiffContent.tsx src/ui/components/imageDiffContent.tsx src/ui/components/diff/PierreDiff.tsx src/ui/components/SvgContent.tsx src/ui/pages/WorkspacePage.tsx Setup Run Scripts MCP Run 23 unmodifed lines 23 24 25 26 27 28 29 30 31 32 3 unmodifed lines 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 PierreDiffProps Next unread Run workspace Test your changes here. Next unread Run workspace Test your changes here. name: string; filePath: string; diffMode: "edit" | "unified"; workspaceId: string; // Can be used to add padding on trailing lines // can scroll above an overlay (e.g. the // composer) + contentPaddingBottom: number; }; const VIRTUALIZER_CONFIG = { overscrollSize: 500 } as const; overflow: "auto" as const, willChange: "scroll-position", }, const DEFAULT_CONTENT_PADDING_BOTTOM = 48; const PIEZZADIFF = memo((function PiezzaDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { const DEFAULT_CONTENT_PADDING_BOTTOM, PiezzaDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { contentPaddingBottom: number; name: string; filePath: string; diffMode: "edit" | "unified"; workspaceId: string; // Can be used to add padding on trailing lines // can scroll above an overlay (e.g. the // composer) + contentPaddingBottom: number; }; const VIRTUALIZER_CONFIG = { overscrollSize: 500 } as const; overflow: "auto" as const, willChange: "scroll-position", }, const DEFAULT_CONTENT_PADDING_BOTTOM = 48; const PIEZZADIFF = memo((function PiezzaDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { const DEFAULT_CONTENT_PADDING_BOTTOM, PiezzaDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { contentPaddingBottom: number;
    Camera
    The camera remains static, maintaining the same overhead perspective.
    Motion
    The code diff view updates instantly, highlighting changes in green and red. This rapid visual feedback emphasizes the speed of rendering and diff comparison. The downward arrow icon persists.
  4. Product Reveal

    Conductor's Speed & Efficiency

    “(No spoken dialogue — A sustained, airy synth pad gradually fades out by 00:10, following the pronounced sub-bass impact.)”

    On screen
    cbh123/composer-overlay-diffs All changes Layout Diffs Review works... Chat with AI src/ui/components/diff/PierreDiff.tsx Commit and push All files Changes Checks Review src/ui/components/fileEditor/CodeMirrorEditor.tsx src/ui/components/fileEditor/FileEditor.tsx src/ui/components/imageFileContent.tsx src/ui/components/grid/Grid.tsx src/ui/components/diff/DiffContent.tsx src/ui/components/imageDiffContent.tsx src/ui/components/diff/PierreDiff.tsx src/ui/components/SvgContent.tsx src/ui/pages/WorkspacePage.tsx Setup Run Scripts MCP Run 23 unmodifed lines 23 24 25 26 27 28 29 30 31 32 3 unmodifed lines 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 PierreDiffProps Next unread Run workspace Test your changes here. Next unread Run workspace Test your changes here. name: string; filePath: string; diffMode: "edit" | "unified"; workspaceId: string; // Can be used to add padding on trailing lines // can scroll above an overlay (e.g. the // composer) + contentPaddingBottom: number; }; const VIRTUALIZER_CONFIG = { overscrollSize: 500 } as const; overflow: "auto" as const, willChange: "scroll-position", }, const DEFAULT_CONTENT_PADDING_BOTTOM = 48; const PIEZZADIFF = memo((function PiezzaDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { const DEFAULT_CONTENT_PADDING_BOTTOM, PierreDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { contentPaddingBottom: number; name: string; filePath: string; diffMode: "edit" | "unified"; workspaceId: string; // Can be used to add padding on trailing lines // can scroll above an overlay (e.g. the // composer) + contentPaddingBottom: number; }; const VIRTUALIZER_CONFIG = { overscrollSize: 500 } as const; overflow: "auto" as const, willChange: "scroll-position", }, const DEFAULT_CONTENT_PADDING_BOTTOM = 48; const PIEZZADIFF = memo((function PiezzaDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { const DEFAULT_CONTENT_PADDING_BOTTOM, PierreDiff({ oldContent, newContent, filePath, diffMode, workspaceId, }) { contentPaddingBottom: number; ⌘ ⇧ {
    Camera
    The camera remains static, maintaining the same overhead perspective.
    Motion
    The downward arrow icon is replaced by a keyboard shortcut (⌘⇧{), indicating a specific command for rapid workspace switching or tab management. The code diff view remains active, reinforcing the product's core functionality.

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