AVer DL30 Manuel D'utilisation page 38

Image Process
Select the "Image Process" tab in camera settings interface.
Set up the white balance, saturation, contrast, sharpness, noise filter, mirror, and flip.
Video & Audio
The user can set up Power Frequency, Video Mode, Stream Video Output, Bitrate, Encoding Type,
Framerate, I-VOP Interval (S), Rate Control, Audio Input Type, Audio Volume, and Sampling Rate.
3 types of video modes can be selected and each one only supports single function,
 Stream Only: supports RTSP/RTMP only.
 USB Only (factory default): supports USB port output only; not compatible with AVer PTZ
Management and PTZ Control Panel. Please switch to other two modes if necessary.
 USB + Streaming: supports both RTSP/RTMP and USB output at the same time.
[Note] If Video mode is in "Stream Only", the frame rate is up to 60fps; in "USB + Streaming" mode, the
frame rate is up to 30fps.
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