Network Camera User Manual
UM Network Camera 072221NA
25
compression standard.
The objective of the SVC standardization has been to enable the encoding of a high-quality video
bitstream that contains one or more subset bitstreams that can themselves be decoded with a
complexity and reconstruction quality similar to that achieved using the existing H.264 or H.265 design
with the same quantity of data as in the subset bitstream. The subset bitstream is derived by dropping
packets from the larger bitstream.
SVC enables forward compatibility for older hardware: the same bitstream can be consumed by basic
hardware that can decode only a low-resolution subset, while more advanced hardware will be able to
decode a high quality video stream.
•
MPEG4
: MPEG4, referring to MPEG-4 Part 2, is a video compression format developed by Moving Picture
Experts Group (MPEG).
•
MJPEG
: Motion JPEG (M-JPEG or MJPEG) is a video compression format in which intraframe coding
technology is used. Images in a MJPEG format are compressed as individual JPEG images.
•
Profile
: This function means that under the same bitrate, the more complex the profile is, the higher the
quality of the image is, and the requirement for network bandwidth is also higher.
Smoothing
This refers to the smoothness of the stream. The higher the smoothing value, the better the fluency of the
stream, though, the video quality may not be so satisfactory. The lower the smoothing value, the higher
the stream quality, though it may appear not fluent.
4.2
ROI
ROI (Region of Interest) encoding helps to discriminate the ROI and background information in video
compression. The technology assigns more encoding resource to the region of interest, thus increasing
the quality of the ROI whereas the background information is less focused.
Before You Start
Check the video coding type. ROI is supported when the video coding type is H.264 or H. 265.
Steps
1.
Go to
Configuration
→
Video/Audio
→
ROI
.
2.
Check
Enable
.
3.
Select
Stream Type
.
4.
Select
Region No.
in
Fixed Region
to draw ROI region.
1)
Click
Draw Area
.
2)
Click and drag the mouse on the view screen to draw the fixed region.
3)
Click
Stop Drawing
.
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