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Macos screen recorder

Skill Ghosteken/agent-harness/archive/skills-community/macos-screen-recorder

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Install
npx -y skills add Ghosteken/agent-harness --skill macos-screen-recorder

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What its author says it does

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macOS screen recorder that captures the main display PLUS system audio via ScreenCaptureKit — no BlackHole/loopback driver, no sudo, just the standard Screen Recording permission. CLI-driven; fills the headless-screen-recording-with-system-sound gap QuickTime and `screencapture -v` can't.

The file declares its own license as MIT. That is the author’s claim about this one file, and it is not the same thing as the license GitHub reports for the repository, which is listed with the other numbers below.

SKILL.md

2.6 KB, as published. Nobody here has run it

When to Use

Use when you need to script a screen recording WITH system sound on macOS from the CLI (demos, captures, voice-demo recording) — the case QuickTime and screencapture -v can't cover without a virtual audio device.

Source: connerkward/macos-screen-recorder-system-audio (MIT).

macos-screen-recorder (sck-record)

sck-record.swift → compiled sck-record (binary gitignored; built by setup-machine, or swiftc -O sck-record.swift -o sck-record). Records the main display + system audio via ScreenCaptureKit.

./sck-record <out.mp4> <seconds>

The one true differentiator: system audio from the CLI with zero install — no BlackHole / loopback virtual device, no sudo; only the standard Screen Recording permission (granted once to whatever app shells out). It is not a general "better than OBS/Screen Studio" tool — it fills exactly the headless-CLI-with-system-audio gap.

sck-record is the raw capture primitive — it records, nothing more. To polish a recording afterward (idle speed-up, auto-zoom, keystroke chips, smoothed cursor, vertical export), pair it with screenstudio-alternative-skill: record with sck-record --no-cursor <out.mp4> <seconds>, then run its post-production pass on the resulting mp4. (Auto-zoom and keystroke overlays additionally need an input-event log captured during recording, which that skill supplies; sck-record's pixels alone cover idle speed-up, cursor smoothing, and vertical export.)

Limitations

  • macOS only; it depends on ScreenCaptureKit and the user's Screen Recording permission.
  • The recorder captures raw display and system audio but does not provide editing, auto-zoom, captions, or social-format polish by itself.
  • Input-event overlays require a separate event log captured during recording; pixels alone cannot reconstruct keystrokes or precise click metadata.

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