Planet ICA-3550V User Manual page 31

(5)ZOOM
(6)FrameBufferSec
5 Mega-pixel Outdoor IR PoE IP Camera
Enable zoom-in and zoom-out functions. Select "Enable digital
zoom" option first within the pop-up dialogue box and then drag
and drop the bar to adjust the zoom factors.
Build a buffer to accumulate several video frames and play at a
regular interval. This function can make video smooth-going
when the Network speed is slow and lag. If you select "100", the
interval between every frame is fixed to 100 mSec. The slower
the Network is, the bigger value should be selected. The default
value is null.
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User's Manual of ICA-3550V