Z-CAM E2 - Audio Settings

 VFR Control：Coarse / Fine
- Coarse：See 9. Appendix 1
- Fine：VFR fine control, 1 frame per step.
2.4. Audio
 Encoder: None / AAC / PCM
 Input: Off / Microphone / XLR / Mic Left + XLR Right / Mic Right + XLR Left
 Off：Turn off all audio input.
 Microphone：The camera will use built-in microphone as audio input if there is
no external microphone plugged into the 3.5mm audio-in port, and will use the
external microphone if there is one plugged into the 3.5mm audio-in port.

XLR：Take XLR port as audio-in
 Mic Left + XLR Right: Take 3.5mm audio-in(microphone) left channel, and
XLR port right channel to merge for audio-in

Mic Right + XLR Left: Take 3.5mm audio-in(microphone) right channel, and
XLR port left channel to merge for audio-in
 Input Gain: Control / Manual Gain