Grandstream Networks GXV3662 series, User Manual

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GXV3662 IP dome camera Series
Firmware 1.0.4.8 Page
of 22
Grandstream Networks, Inc. 11/08/10
Grandstream network cameras or digit video cameras in the same subnet.
GXV3662
GXV3662 GXV3662
GXV3662 Series
Series Series
Series Video
Video Video
Video &
& &
& Audio
Audio Audio
Audio Page
Page Page
Page
On Screen Display (OSD) Settings
OSD
OSD OSD
OSD Time/
Time/ Time/
Time/ Text
Text Text
Text – The time stamp
and channel name displayed on the
screen.
Video Settings
Preferred Preferred Preferred Preferred Video Video Video Video Codec Codec Codec Codec
– The GXV3662 supports the H.264 video codec.
Resolution
Resolution
Resolution Resolution – The higher the resolution is, the better the video quality is, and higher
bandwidth is required.
Low ----------------------- � High Resolution
QCIF CIF 2CIF D1
Bit Bit Bit Bit Rate Rate Rate Rate
– The number of bits that are
conveyed or processed per unit of time.
Maximum
Maximum Maximum
Maximum Frame
Frame Frame
Frame Rate
Rate Rate
Rate – The video frame
rate is adjustable based on network
conditions. Increasing the frame rate will
increase the amount of data significantly
therefore consuming more bandwidth .... Video
will be impaired due to packet loss when
there is insufficient bandwidth.
Bit
Bit Bit
Bit Rate
Rate Rate
Rate Control
Control Control
Control – Variable Bit rate (VBR)
and Constant Bit Rate (CBR).
Variable Bit Rate - If VBR is selected, the codec varies the amount of output data per time
segment. VBR produces a better quality-to-space ratio. The bits available are used to enable
more flexibly and encode sound or video data more accurately, with fewer bits used in less
demanding passages and more bits used in difficult-to-encode passages.
Constant Bit Rate
- If CBR is selected, the codec’s output data is constant regardless of the
input data. The output bit rate is defined in “Bit rate”. CBR is useful for streaming multimedia
content on limited capacity channels. It is easier to calculate required bandwidth as well as
the required storage space using CBR.
I-frame
I-frame I-frame
I-frame Interval
Interval Interval
Interval – While streaming video over a network, compression technologies are used
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