Dahua Technology XVR4 Series, User Manual

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Local Configurations 98
Configure the settings for the main/sub streams parameters. See Table 5-24. Step 2
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: General 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,
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 specific range of frame rate that you can select depends on the
capability of the Device.
Quality
This function is available if you select VBR in the Bit Rate List.
The higher the value, 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 Encode
Click More Setting , the More Setting interface is displayed.
Audio Encode: 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 input port.

HDCVI: The audio signal is input from HDCVI camera.
Audio Format: In the Audio Forma t list, select a format that you 
need.
Audio Source
Audio Format
Table 5-24