Telestream Lightspeed Live Capture User Manual page 257

Note: The only audio track setting that applies to Live Capture is the AC3
Decompressor. No other settings apply.
To identify a track as AC3, follow these steps:
1. Select the source to display its preview panel.
2. Click the Audio Tracks tab and select the track you are working on.
3. Click the Edit icon
4. Enable the AC3 Decompressor control and click Save.
When enabled, AC3 audio embedded in PCM is decoded at the source level and passed
on as PCM, for use directly in the primary or secondary outputs and the Preview panel
of a Live system. When the AC3 Decompressor is enabled, the affected source's Live
Source process restarts automatically.
Lightspeed Live Capture User Guide
to display the Configure Audio Track panel:
Managing Video Sources
Creating & Configuring RTMP Sources
259