USB Camera AV Monitor

Overview

USB Camera AV Monitor checks a local camera and audio path on one screen. It previews NV12 video, plays PCM 48 kHz two-channel audio, and shows the input waveform and status values.

Key features

• Select a Windows camera and a supported resolution/FPS combination.
• Select separate audio input and output devices.
• Preview video and play captured audio through the selected output.
• View the audio input as a time-domain waveform.
• Adjust CH1 and CH2 volume, mute, and delay independently up to 500 ms.
• Reload devices and start or stop monitoring without recording or streaming.

Installation

• Install USB Camera AV Monitor from the Microsoft Store.
• Connect the camera and audio devices and confirm that Windows recognizes them.

Basic configuration

1. Select the camera, resolution/FPS, audio input, and audio output.
2. Press Start to begin video preview, audio output, and waveform monitoring.
3. Check the Video and Audio status values and compare the preview with the waveform.
4. Adjust per-channel volume, mute, or delay when checking the output path.
5. Press Stop before changing devices. Use Reload after reconnecting hardware.

System requirements

• Windows 11 on an x64 PC
• A USB camera supported by Windows Media Foundation
• Audio input and output devices supporting WASAPI shared mode with PCM 48 kHz 2-channel float

Main operations

Keep the preview and waveform visible while changing one device or channel control at a time.

Checks before use

• Close applications that may be using the camera or audio device exclusively.
• Select an NV12 camera mode supported by the device.
• Confirm that the selected audio output is connected and available to Windows.
• This product does not record, stream, or provide long-running monitoring.

Troubleshooting

Reload devices after reconnecting hardware. If capture does not start, try another camera resolution/FPS combination and confirm the device is available in Windows settings.