54
Parameter
Description
Smart
Codec
Enable smart codec to improve video compressibility and save storage
space.
After smart codec is enabled, the device would stop supporting the third bit
stream, ROI, and smart event detection, and the actual interface shall prevail.
Resolution
The resolution of the video. The higher the value is, the clearer the image will
be, but the bigger the bandwidth will be required.
Video Clip
This function is available only for sub stream 2 of some select models.
1. Select
Video Clip
, and click
.
The
Area
interface is displayed.
2. Select resolution as needed and clip image on the interface.
3. View the clipped video on
Live
interface (the live interface of sub stream
2 only displays the clipped area).
Frame Rate
(FPS)
The number of frame in one second of video. The higher the value is, the
clearer and smoother the video will be.
Bit
Rate
Type
The bit rate control type during video data transmission. You can select bit
rate type from:
CBR
(
Constant Bit Rate)
: The bit rate changes a little and keeps close to
the defined bit rate value.
VBR
(
Variable Bit Rate)
: The bit rate changes as monitoring scene
changes.
The
Bit Rate Type
can be only be set as
CBR
when
Encode Mode
is set as
MJPEG
.
Quality
This parameter can be configured only when the
Bit Rate Type
is set as
VBR
.
The better the quality is, the larger the bandwidth will be requested.
Reference
Bit Rate
The most suitable bit rate value range recommended to user according to the
defined resolution and frame rate.
Max Bit Rate
This parameter can be configured only when the
Bit Rate Type
is set as
VBR
.
You can select the value of the
Max Bit Rate
according to the
Reference Bit
Rate
value.The bit rate then changes as monitoring scene changes, but the
max bit rate keeps close to the defined value.
Bit Rate
This parameter can be configured only when the
Bit Rate Type
is set as
CBR
.
Select bit rate value in the list according to actual condition.
I Frame
Interval
The number of P frames between two I frames, and the
I Frame Interval
range changes as
FPS
changes.
It is recommended to set
I Frame Interval
twice as big as
FPS
.