Flip Video.
Click this to have the image swapped top-to-bottom.
Mirror Video.
Click this to have the image swapped left-to-right.
Sound On/Off.
This can be used to select the Audio stream which can be heard.
(Only one audio stream can be selected at any time.) If the camera does not
support audio, or if audio is disabled on the camera, this option is unavailable.
Microphone On/Off.
For Cameras that feature audio, click this to enable the
microphone.
Volume.
If Sound/Microphone is enabled, you can right click the icon, then
drag and drop to raise or lower the volume.
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