Parameter
Description
Encoding
complexity
The parameter is available only when you set
Coding protocol
to
H.264
.
H.264 includes H.264 Base Profile, H.264 Main Profile, and H.264
High Profile. Of them, H.264 Base Profile has the lowest encoding
compression performance and lowest requirements on hardware
decoding performance, while H.264 High Profile has the highest.
The coding complexity of H.265 is H.265 Main. When the coding
protocol is changed from MJPEG and H.265 back to H.264, H.264
High Profile is used by default.
Resolution
Increasing the resolution improves the video quality but consumes
more bandwidth.
NOTE
l
The PAL standard primarily applies to China and Europe.
l
The NTSC standard primarily applies to America and Japan.
Bit rate type
The
Bit rate type
parameter is available only when you set
Coding
protocol
to
H.264
and
H.265
.
The bit rate is the number of data bits transmitted in a unit of time.
Bit rate value
The
Bit rate value
parameter is available only when you set
Bit
rate type
to
Constant bit rate
.
Increasing the bit rate value improves the video quality but
consumes more bandwidth.
l
To ensure the video quality, you must set a proper bit rate value
based on the site requirements.
l
To ensure video smoothness, the actual bandwidth is greater than
the bit rate value. When the bit rate is low, the required
bandwidth is generally 1.2 times of the bit rate.
l
When the total bit rate of enabled live video streams exceeds 40
Mbit/s, you are advised to reduce the bit rate or the number of
enabled video streams to prevent image freeze or artifacts caused
by large bit streams.
Bit rate control
mode
The parameter is available only when you set
Bit rate type
to
Constant bit rate
. The options are as follows:
l
Frame rate priority
: The frame rate stability is preferentially
ensured. However, if the scenario is complex or if the object
moves quickly in an image, the actual bit rate can be greater than
the preset value.
l
Image quality priority
: The image quality is preferentially
ensured. However, if the scenario is complex or if the object
moves quickly in an image, frame loss may occur or live video
may not be played smoothly.
Bit rate upper limit
The
Bit rate upper limit
parameter is available only when you set
Bit rate type
to
Variable bit rate
.
The bit rate range is associated with the resolution.
IPC6125-WDL-FA
Configuration Guide
6 Setting Video Parameters
Issue 01 (2016-08-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
48
