D-Link DCS-6620 Product Manual - Page 45

DCS-6620 User's Manual, D-Link Systems, Inc., Using the DCS-6620 with an Internet Browser - network camera

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DCS-6620 User's Manual Using the DCS-6620 with an Internet Browser Configuration > Advanced > Video (continued) Key frame interval: Video quality control: A large "Key frame interval" value can reduce the bit rate, but if there is a packet loss during transmission, it will cause image corruption. "Fix bit rate" and "Key frame interval" are only available in "MPEG4" mode. The video quality may be poor due to the sending of maximal frame rate within the limited bandwidth, which is when images are moving rapidly. Consequently, to ensure detailed video quality (quantization rate) regardless of the network, it will utilize more bandwidth to send the maximal frames when images change drastically. To fix the bandwidth utilization regardless of the video quality, choose Fix bit rate and select the desired bandwidth. The video quality may be reduced in order to send maximum frames with limited bandwidth, especially when images change drastically. For higher video detail regardless of the bandwidth selection, select Fix quality and select a video quality level. This setting will utilize more bandwidth to send the maximum frames when images change drastically. Flip: Vertically rotate the video. Mirror: Horizontally rotate the video. Check options both if the Network Camera is installed upside down. Improve efficiancy in the multi-user environment: Check this option to improve efficiency in the multi-user environment when running in the low bandwidth environment. Click Apply to make changes effective D-Link Systems, Inc. 45

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45
DCS-6620 User’s Manual
D-Link Systems, Inc.
Using the DCS-6620 with an Internet Browser
Configuration > Advanced > Video
(continued)
Key frame interval:
Video quality control:
Vertically rotate the video.
A large “
Key frame interval
” value can reduce the bit rate, but if
there is a packet loss during transmission, it will cause image
corruption. “
Fix bit rate
” and “
Key frame interval
” are only available in
“
MPEG4
” mode. The video quality may be poor due to the sending
of maximal frame rate within the limited bandwidth, which is when
images are moving rapidly. Consequently, to ensure detailed
video quality (quantization rate) regardless of the network, it will
utilize more bandwidth to send the maximal frames when images
change drastically.
To fix the bandwidth utilization regardless of the video quality,
choose
Fix bit rate
and select
the desired bandwidth. The video
quality may be reduced in order to send maximum frames with
limited bandwidth, especially when images change drastically.
For higher video detail regardless of the bandwidth selection,
select
Fix quality
and select a video quality level. This setting will
utilize more bandwidth to send the maximum frames when images
change drastically.
Horizontally rotate the video. Check options both if the Network
Camera is installed upside down.
Click
Apply
to make
changes effective
Flip:
Mirror:
Improve efficiancy
in the multi-user
environment
:
Check this option to improve efficiency in the multi-user environment
when running in the low bandwidth environment.