quietshrink

Compress macOS screen recordings using hardware HEVC encoders with quality presets.

46.8k|4.4k|Updated Mar 8, 2026

Search Tags:#video #macos #compression #file size #hevc #silent

Ready to run

npx skills add https://github.com/HKUDS/CLI-Anything --skill quietshrink

💬 Prompt for ChatGPT / Claude Chat▼

Please help me install this Agent Skill.
Skill: quietshrink
Source: https://github.com/HKUDS/CLI-Anything/tree/main/quietshrink/agent-harness/cli_anything/quietshrink/skills
Command: npx skills add https://github.com/HKUDS/CLI-Anything --skill quietshrink

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill requires ffmpeg, and includes scripts (resource) components.

What problem does it solve?

This Skill helps users compress large video files on macOS with minimal CPU usage and noise, significantly reducing file sizes without sacrificing quality.

Core Features & Use Cases

Video Compression: Compresses screen recordings and videos on Apple Silicon Macs using hardware accelerated HEVC encoding.
Quality Presets & Inspection: Offers configurable presets like tiny, transparent, and pristine, allowing users to balance quality and size. Provides tools to preview files before compression.
Use Case: For example, a user wants to share a large screen recording via email. Using this Skill, they can reduce the file size drastically while preserving important visual details.

Quick Start

Use the quietshrink skill to compress a video file on your Mac by specifying your desired quality preset and input file path.

Frequently Asked Questions about quietshrink

High-intent search queries and answers about installing and using this skill.

FAQPage Schema

How do I compress large screen recordings on macOS without CPU noise?▼

To compress large screen recordings silently on macOS, use hardware accelerated HEVC encoding via ffmpeg. This minimizes CPU usage and fan noise while drastically reducing video file sizes on Apple Silicon Macs.

What is the best way to reduce video file size on Apple Silicon Macs?▼

The best way to reduce video file size on Apple Silicon Macs is using hardware HEVC encoders. This approach provides fast, silent compression of large videos without sacrificing important visual details for sharing or storage.

Can I adjust video quality presets when compressing videos with ffmpeg?▼

Yes, you can adjust video quality when compressing videos using configurable presets like tiny, transparent, and pristine. These presets allow you to precisely balance the output file size and visual quality.

Do I need ffmpeg hardware acceleration to compress videos silently?▼

Yes, you need ffmpeg with hardware acceleration support to compress videos silently. This requirement enables the hardware HEVC encoders necessary for efficient, low-CPU video compression on macOS.

Does hardware HEVC compression work for reducing video file sizes for email?▼

Yes, hardware HEVC compression works for reducing video file sizes for email. It drastically shrinks large screen recordings and videos, making them small enough to share while preserving important visual details.

Are there limitations when using hardware HEVC encoders for macOS video compression?▼

Hardware HEVC encoders for macOS video compression are specifically suitable for Apple Silicon Macs. Users on unsupported hardware lacking ffmpeg hardware acceleration support will not achieve the intended silent compression.