Recording Parameters; Main Stream; Sub-Stream - HIKVISION DS-9608NI-I8 User Manual

Network Video Recorder User Manual

8.3 Recording Parameters

8.3.1 Main Stream

Main Stream refers to the primary stream that affects data recorded to the hard disk
drive and will directly determine your recording quality and image size.
Compared to the sub-stream, the main stream can provide higher quality video with
higher resolution and frame rate.
Step 1 Frame Rate (FPS – Frames Per Second): Refers to how many frames are
Step 2 Resolution: Image resolution is a measure of how much detail a digital image
Step 3 Bitrate: The bit rate (in kbit/s or Mbit/s) is often referred to as speed, but
Step 4 Enable H.264+ Mode: The H.264+ mode helps to ensure high video quality with a

8.3.2 Sub-Stream

The sub-stream is a second codec that runs alongside the main stream. It reduces the
outgoing Internet bandwidth without sacrificing the direct recording quality.
The sub-stream is often exclusively used by smartphone applications to view live
video. Users with limited Internet speeds benefit most from this setting.
UM NVR v4.xx 111717NA
When the quota capacity is set to
HDD for record and picture capture.
Reboot the device to activate the new storage mode settings.
captured each second. A higher frame rate is advantageous when there is
movement in the video stream, as it maintains image quality throughout.
can hold: the greater the resolution, the greater the level of detail. Resolution
can be specified as the number of pixel-columns (width) by the number of
pixel-rows (height), e.g., 1024 × 768.
actually defines the number of bits/time unit and not distance/time unit.
lowered bitrate. It effectively reduces the need of bandwith and HDD storage
space.
A higher resolution, frame rate, and bitrate setting will provide better video quality,
but will also require more Internet bandwidth and use more hard disk drive storage
space.
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, all cameras will use the total capacity of the
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