Vivotek CC8160 User Manual page 57

With the H.264 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.
- 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. The 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 illustrated below, the upper screen may contain little details of your interest,
while the sidewalk on the lower screen is included in an ROI window.
ROI_0 ROI_0
•
Slide bar to the right - higher quality in the ROI
areas
•
Slide bar to the left - higher quality in the non-
ROI areas.
non-interested
X X
ROI
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User's Manual - 57