Audio Setup

Capture application audio directly or route via virtual audio cables.

Application Audio Capture (Windows)

When screen sharing or window capturing with elevated privileges, Electron Capture can capture audio directly from the selected application. This is the simplest method and works without any additional software.

1. Right-click and select Elevate Privileges
2. Start a screen share or window capture via VDO.Ninja
3. Select the application you want to capture
4. Audio from that application is automatically included in the stream

This uses Windows Audio Session API (WASAPI) loopback capture to grab audio from specific processes.

Virtual Audio Cables (Alternative)

If you need to route audio from Electron Capture into OBS or other applications as a separate audio source, virtual audio cables give you independent volume control and the ability to apply filters.

Recommended Software

Windows

• VB-Cable (free/donationware) - Simple, one virtual cable
• Virtual Audio Cable (VAC) (paid) - Multiple cables, more features

macOS

• BlackHole (free) - Open source, 2 or 16 channels
• Loopback (paid) - Professional-grade, excellent UI

Changing Audio Output Device

To route audio to a virtual cable:

1. Right-click in the Electron Capture window
2. Select Change media device > Change audio destination
3. Choose your virtual audio cable from the list

Capturing in OBS

Once audio is routed to a virtual cable:

1. In OBS, add an Audio Input Capture source
2. Select your virtual audio cable as the device
3. Audio from Electron Capture now appears as a separate track

Alternative: Application Audio Capture

Newer versions of OBS can capture application audio directly without virtual cables:

1. Add an Application Audio Capture source
2. Select Electron Capture from the application list

Split Audio/Video Capture

You can capture video with Electron Capture and audio with OBS Browser Source:

# Electron Capture - video only
elecap.exe --url="https://vdo.ninja/?view=abc123&noaudio"

# OBS Browser Source - audio only
https://vdo.ninja/?view=abc123&novideo

Multiple Audio Sources

For productions with multiple guests, each Electron Capture window can output to a different virtual cable:

• Guest 1 → VB-Cable A → OBS Audio Track 1
• Guest 2 → VB-Cable B → OBS Audio Track 2
• Guest 3 → VB-Cable C → OBS Audio Track 3

This gives you independent audio control and multi-track recording.