Digital Video Recorder User Manual
67
Fig 7-4 right key sub menu
Stream:
this DVR supports master stream and sub stream. Master stream has higher frame rate, max 25FPS
（
PAL
）
/30 FPS
（
NTSC
）
for every channel, but it needs higher network bandwidth simultaneously; Sub-stream has low frame rate, max 6FPS
（
PAL
）
/7FPS
（
NTSC
）
for every channel, it requires low network bandwidth. Therefore, users can select the stream according
to their bandwidth.
All to master/sub stream:
set all channel to master stream or sub stream.
Enable audio:
enable or disenable audio
Full screen:
the live preview picture will display with full screen and the tool bar will be hided; double click left mouse or click
right mouse to return
Zoom in:
Single channel large screen electronic amplification
Left click the channel which needs to amplify; Click the right mouse, select Zoom in button and then click the left mouse to
amplify the image. Press left mouse to drug the cursor, user can view the image. Double-click the left mouse to exit. Click the
right mouse to return to the main interface.
