Video Stream Parameters - Huawei IVS1800 User Manual

IVS1800 Video Management System
User Manual
Issue 02 (2021-01-27)
Table 4-5 Video stream parameters
Parameter
Primary stream/
Secondary
stream
Intelligent
encoding
Slice
Encoding
protocol
Encoding
complexity
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Description
Set the stream type based on the site requirements.
– Primary stream: The primary streams feature high
bit rate, definition, and bandwidth usage. They are
applicable to local storage.
– Secondary stream: The secondary streams provide
smooth video, occupy small bandwidth, and are
applicable to data transmission over low-bandwidth
networks.
NOTE
SD card recording supports only primary streams.
After intelligent encoding is enabled, a camera can
automatically adapt to scenarios to reduce the bit rate
and save the storage space.
A higher intelligent encoding level indicates more
significant reduction of the bit rate, which however may
lead to image quality deterioration.
This parameter is available only when you set Encoding
protocol to H.264.
Multi-slice encoding indicates that video streams are
divided into multiple segments. Each segment forms a
slice. The encoding process of each slice is independent
of each other. Therefore, the camera can encode and
decode multiple slices in parallel, improving encoding
and decoding performance. This parameter is selected
by default.
Set the coding protocol based on the site requirements.
The options are as follows:
– H.264: The H.264 protocol requires relatively small
bandwidth to ensure video quality.
– MJPEG: The MJPEG protocol decodes and displays
each frame independently without referring to the
previous and next frames. This protocol has a small
compression ratio and requires large bandwidth to
ensure video quality. This protocol is suitable for
video editing.
– H.265: The H.265 protocol is bandwidth-conserving
compared with the H.264 protocol.
The options of H.264 profiles include Base profile, Main
profile, and High profile. Among these profiles, the
baseline profile has the lowest encoding compression
performance and lowest requirements on hardware
decoding performance, while the high profile has the
highest.
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