THK 9x0 Series, User Manual

Page: 40 / 59

9x0 Series Series
Page 40
3.3.1 Video Configuration (Video Format & Resolution)
The Video Configuration category on the left gives access to the video configuration parameters.
Encoding
Select Yes from the drop-down menu to enable Stream 2~Stream 4 encoding. Or select No to disable the streaming
encoding.
Encode Type
Available video resolution formats include H.265, H.264 and MJPEG. You can select the preferred encode type from
the drop-down menu.
Resolution
Video format and resolution combinations will vary depending on the user configuration. The table below lists the
default resolution of different camera models.
Megapixels IP camera models Default resolution
4M Linear mode (50/60 fps) H.265/H.264-2688x 1512(30/25fps) +
H.265/H.264-800 x 600 (30/25fps)
HDR Mode (WDR 2 shutter)
3M Linear mode (50/60 fps) H.265/H.264-2048 x 1536 (30/25fps) +
H.265/H.264- 800 x 600 (30/25 fps)
HDR mode (WDR 2 shutter)
2M Linear mode (50/60 fps) H.265/H.264-1920x 1080(30/25fps)+
H.265/H.264-1920 x 1080(30/25 fps)
HDR mode (WDR 2 shutter)
Rate Control
There are three kinds of H.265/H.264 bit rate modes: CBR (Constant Bit Rate), VBR (Variable Bit Rate) and LBR (Low
Bit Rate).

CBR
The sent
out video bitrate will be fixed and consistent to maintain the bandwidth.

VBR
The video bitrate varies depending on
the activity of the monitoring environment to achieve better image
quality.

LBR
LBR keeps the bitrate low and ensures superior image quality.
To implement LBR control, set up the
compression level and dynamic GOV for each streaming beforehand.
 Compression
Based on the current application area and streaming bitrate, select the most suitable compression level:
high, mid or low.
If you set the level to
High , the bitrate will be reduced considerably. However, the image quality may be
degraded at the same time.
If you set the level to
Low , the bitrate will be kept low while the image quality remains high.
 Dynamic GOV
Depending on the amount of motion in the application area, the GOV length of the video will be adjusted
dynamically to reduce more bitrate, especially for scenes with minor changes. The length of Dynamic GOV
ranges from
GOV Length to Max. GOV (4094).
Select Enabled and set Max. GOV . Then, click the Save button.
If there is little or zero activity in the scene, set Max. GOV larger. The GOV length will be longer, resulting
in a lower bitrate and bandwidth.
If there are constant dynamic changes in the scene, it is recommended to just adjust
GOV Length and
disable Dynamic GOV .
Click the Save button to confirm the settings.