VoxRelay
Choosing a VoxRelay playback source, including HDMI ARC and eARC
Right-click the VoxRelay notification-area icon, open Select Source, and choose the Windows playback or loopback device carrying the speech you want to caption. Use Refresh Sources after connecting or enabling new audio hardware. Changing the source restarts capture.
A television's ARC or eARC port is usable only when compatible capture hardware and its driver expose that audio to Windows as a playback or loopback source. ARC/eARC by itself is not a PC recording input. HDCP-protected sources and output-only hardware may not be capturable, and VoxRelay cannot bypass content protection.