HIKVISION IDS-2CD7A46G0-IZHSY 8-32, User Manual, Page: 24 / 90

Network Camera User Manual
UM Network Camera 072221NA 24
Frame Rate
The frame rate is the frequency at which the video stream is updated and is measured in frames per
second (fps).
A higher frame rate is advantageous when there is movement in the video stream, as it maintains image
quality throughout. Note that higher frame rate requires higher bandwidth and larger storage space.
Video Encoding
This is the compression standard the device adopts for video encoding.
NOTE: Available compression standards vary by model.
• H.264
: H.264, also known as MPEG-4 Part 10, Advanced Video Coding, is a compression standard.
Without compressing image quality, it increases compression ratio and reduces the size of video file
more than MJPEG or MPEG-4 Part 2.
• H.264+ : H.264+ is an improved compression coding technology based on H.264. By enabling H.264+,
you can estimate the HDD consumption by its maximum average bitrate. Compared to H.264, H.264+
reduces storage by up to 50 percent with the same maximum bitrate in most scenes.
When H.264+ is enabled, Max. Average Bitrate is configurable. The device gives a recommended max.
average bitrate by default. You can adjust the parameter to a higher value if the video quality is less
satisfactory. Max. average bitrate should not be higher than max. bitrate.
When H.264+ is enabled,
Video Quality
,
I Frame Interval
,
Profile
,
SVC
,
Main Stream Smoothing
, and
ROI
are not supported.
• H.265
: H.265, also known as High Efficiency Video Coding (HEVC) and MPEG-H Part 2, is a compression
standard. In comparison to H.264, it offers better video compression at the same resolution, frame rate
and image quality.
• H.265+
: H.265+ is an improved compression coding technology based on H.265. By enabling H.265+,
you can estimate the HDD consumption by its maximum average bitrate. Compared to H.265, H.265+
reduces storage by up to 50 percent with the same maximum bitrate in most scenes.
When H.265+ is enabled, Max. Average Bitrate is configurable. The device gives a recommended max.
average bitrate by default. You can adjust the parameter to a higher value if the video quality is less
satisfactory. Max. average bitrate should not be higher than max. bitrate.
NOTE:
When H.265+ is enabled,
Video Quality
,
I Frame Interval
,
Profile
and
SVC
are not
configurable.
• I-Frame Interval : I-frame interval defines the number of frames between two I-Frames.
In H.264 and H.265, an I-Frame, or intra frame, is a self-contained frame that can be independently
decoded without any reference to other images. An I-Frame consumes more bits than other frames.
Thus, video with more I-Frames, in other words, smaller I-Frame interval, generates more steady and
reliable data bits while requiring more storage space.
• SVC
: Scalable Video Coding (SVC) is the name for the Annex G extension of the H.264 or H.265 video