Panasonic LUMIX DC-GH5M2GN - Outputting Down-Converted Audio to an HDMI Device; Outputting Audio Via HDMI

11. Connections with External Devices (Video) – HDMI Output Settings
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Outputting Down-converted Audio to an HDMI
Device
When an XLR Microphone Adaptor (DMW-XLR1: optional) is attached,
audio is down-converted to a format suitable for the connected HDMI
external device before being output.
 [ ]  [ ]  [HDMI Rec Output]  Select [Sound
Down Convert]
Outputting Audio via HDMI
Output audio to an external device connected by HDMI.
 [ ]  [ ]  [HDMI Rec Output]  Select [Sound
Output (HDMI)]
Settings: [ON]/[OFF]
[AUTO]
Output is down-converted to match the connected
device.
[OFF]
Output is according to the settings in [XLR Mic
Adaptor Setting].