AV Monitor Pro turns your Mac into a simple, real-time monitor for external audio and video sources
AV Monitor Pro turns your Mac into a simple, real-time monitor for external audio and video sources.
Connect a USB camera, HDMI capture device, audio interface, or other AV input and instantly see the live feed — like switching inputs on a TV.
Perfect for HDMI monitoring, USB video devices, headless Mac mini setups, camera preview, AV testing, and portable monitor workflows.
Works with:
HDMI capture cards
USB cameras and webcams
DSLR / mirrorless cameras (via capture devices)
iPhone (Continuity Camera)
USB audio interfaces and microphones
Any UVC-compatible video device
Features:
Instant low-latency live preview
Separate Video and Audio input selection
Live audio level meter
Automatic device detection
Fast switching between devices
Clean, distraction-free interface
.mov recording (H.264 video + microphone audio)
Native macOS performance
Ideal for:
Using your Mac as an external monitor
Viewing HDMI input without a dedicated display
Monitoring USB AV devices
Testing video and audio hardware
Simple live preview and recording
Just open the app, select your devices, and monitor instantly.
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Part of The Beaver Tools — a collection of focused Mac utilities.