Frequently Asked Question

On Windows, system audio can be captured through Stereo Mix or a virtual audio driver when the sound card and driver expose that input. This is useful when the stream should include application sounds or operator audio context.

Windows checklist

• Open Windows sound settings and check whether Stereo Mix is available.
• Enable the input if Windows has disabled it.
• Select Stereo Mix or the virtual audio device in ITVDesk.
• Start the stream and test audio in the target VMS/NVR recording.

If Stereo Mix is missing

• Update or install the audio driver from the PC or sound-card vendor.
• Use a supported virtual audio device if the hardware driver does not provide Stereo Mix.
• Use microphone or another capture input as a fallback.

Production note

• Always test recorded playback, because some VMS/NVR systems show live audio but require separate settings for recorded audio.

Related documentation:

• Audio Stream Settings