Cisco 8020 Reference Manual page 58

Media > Video
Streaming a typical 2MP scene normally requires 3~4Mb/s of bandwidth. With the Dynamic Intra
frame function, the bandwidth for streaming a medium-traffic scene can be reduced to 2~3Mb/s, and
during the no-traffic period of time, down to 500kb/s.
Figure 5-4
activities in scenes
Figure 5-4
Figure 5-5
With the H.265 codec in an optimal scenario and when Dynamic Intra frame is combined with the
Smart Stream function, an 80% of bandwidth saving can be achieved compared with using H.264
without enabling these bandwidth-saving features.
Smart codec—Smart codec effectively reduces the quality of the whole or the non-interested areas
•
on a screen and therefore reduces the bandwidth consumed.
You can manually specify the video quality for the foreground and the background areas.
Select an operation mode if Smart codec is preferred:
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Cisco Video Surveillance 8020/8030 IP Camera Reference Guide
5-16
shows dynamic intra frame with static scenes.
Dynamic Intra Frame with Static Scenes
Dynamic Intra Frame with Activities in Scenes
Auto tracking—The Auto mode configures the whole screen into the non-interested area. The
video quality of part of the screen returns to normal when one or more objects move in that area.
The remainder of the screen where there are no moving objects (no pixel changes) will still be
transmitted in low-quality format.
Manual—The Manual mode allows you to configure 3 ROI windows (Region of Interest, with
Foreground quality) on the screen. Areas not included in any ROI windows will be considered
as the non-interested areas. The details in the ROI areas will be transmitted in a higher-quality
video format.
As shown in Figure 5-6, the upper screen may contain little details of your interest, while the
sidewalk on the lower screen is included in an ROI window.
Chapter 5
Figure 5-5 dynamic intra frame shows
Configuration