Dahua Technology XVR Series, Руководство пользователя

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User’s Manual
75
Table 5-5 Main and sub streams parameters
Parameter Description
Channel
In the Channel list, select the channel that you want to configure the
settings for.
Smart Codec
Enable the smart codec function. This function can reduce the video bit
stream for non-important recorded video to maximize the storage space.
Type
Main Stream: In the Type list, select General, MD (Motion Detect), or
Alarm.
Sub Stream: This setting is not configurable.
Compression
In the Compression list, select the encode mode.
H.265: Main profile encoding. This setting is recommended.
H.264H: High profile encoding. Low bit stream with high definition.
H.264: Main profile encoding.
H.264B: Baseline profile encoding. This setting requires higher bit
stream compared with other settings for the same definition.
Resolution
In the Resolution list, select resolution for the video.
The maximum video resolution might be different dependent on your
device model.
Frame Rate (FPS)
Configure the frames per second for the video. The higher the value is, the
clearer and smoother the image will become. Frame rate changes along
with the resolution.
Generally, in PAL format, you can select the value from 1 through 25; in
NTSC format, you can select the value from 1 through 30. However, the
actual range of frame rate that you can select depends on the capability
of the Device.
Bit Rate Type
In the Bit Rate Type list, select CBR (Constant Bit Rate) or VBR (Variable Bit
Rate). If you select CBR, the image quality cannot be configured; if you
select VBR, the image quality can be configured.
Quality
This function is available if you select VBR in the Bit Rate List.
The bigger the value is, the better the image will become.
I Frame Interval The interval between two reference frames.
Bit Rate (Kb/S)
In the Bit Rate list, select a value or enter a customized value to change
the image quality. The bigger the value is, the better the image will
become.
Video Enable the function for sub stream.
Audio
Click More, the More interface is displayed.
Audio: This function is enabled by default for main stream. You need
to manually enable it for sub stream 1. Once this function is enabled,
the recorded video file is composite audio and video stream.
Audio Source: In the Audio Source list, you can select Local and
HDCVI.

Local: The audio signal is input from Audio In port.

HDCVI: The audio signal is input from HDCVI camera.
Compression: In the Compression list, select a format that you need.
Audio Source
Compression