Q-See QSTC201 - Manual (Page 23)

QSTC201/211 IP-CAMERA USER MANUAL
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4.2 Configuration: Video Stream, Enable Audio
Click right mouse, a pull-down list will appear as shown below:
Fig 4-2 Right key sub-menu
Master Stream/Second Stream: select the video stream. This IP-CAMERA
supports master stream and sub stream. Master stream has higher frame rate,
max 30fps for every channel, but it needs higher network bandwidth to run
effectively; Second stream has low frame rate, max 3fps for every channel, it
requires lower network bandwidth. Therefore, users can select the stream
according to their available bandwidth.
Enable audio: enable remote audio transmission. Users can hear the audio
from the IP-CAMERA.
Full screen: the picture will fill the screen, without tool bar display. Double click
or click right mouse button to return to the previous interface.
Show status: show the connection status which user connects to device.