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User
’s Manual
41
Encoding Settings
Parameter
Description
Storage Mode
Main Stream
Sub Stream
By default, the main stream is used for storage.
Image Format
Combinations of resolutions and frame rates.
NOTE:
This parameter is effective only when the camera is connected
to the NVR via the private protocol.
Stream
Normal: main stream that is intended for scheduled recording.
Event: main stream that is intended for recording triggered by
events such as alarm inputs or motion detection alarms.
Sub Stream: low resolution video that is intended for local or
remote real-time monitoring.
Video Compression
Video compression standard, for example, H.264, H.265.
The listed options depend on the standards supported by the camera.
NOTE:
When connecting ONVIF cameras, only H.264 and H.265 are
the available compression.
Resolution
Image resolution.
Bitrate Type
CBR: Constant Bit Rate (CBR) is used to maintain a specific bit
rate by varying the quality of video streams. CBR is preferred when
limited bandwidth is available. The disadvantage is that video
quality will vary and may decrease significantly with increased
motion in the scene.
VBR: When using Variable Bit Rate(VBR), video quality is kept as
constant as possible, at the cost of a varying bit rate, and
regardless of whether or not there is motion in the image. VBR is
ideal when high quality is a requirement, especially when there is
motion in the picture.
Bit Rate(Kbps)
Number of bits transferred per second. Select a value or select
Custom
and then set a value as needed.
Range
Bit rate range. Currently the range is fixed.
Frame Rate(fps)
Number of frames per second.
NOTE:
Due to automatic rounding of numbers, the frame rate value
may have 1-2 fps difference on what is shown on the OSD.
Image Quality
This parameter is effective only when
Bitrate Type
is set to
VBR
. Six
levels are provided.
I Frame Interval
Number of frames between two adjacent I frames.
I Frame Range
Range of I frames. Currently the range is fixed.
Smoothing
Use the slider to control the sudden increase of bit rate.
Audio Stream
Enable or disable audio stream.
Smart Encoding
The advanced mode achieves higher compression ratios.
3.
(Optional) Click
Copy
to apply some current settings such as bit rate and frame rate to other
cameras.
4.
Click
Apply
to save the settings.