User Manual

Digital Video Recorder User Manual
43
Chapter 4 Recording and Playback
4.1 Recording
4.1.1 Configure Recording Parameters
Go to Camera → Video Parameters.
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.
Comparing with the sub-stream, the main stream can provide a higher quality video with higher
resolution and frame rate.
Frame Rate (FPS - Frames per Second)
It refers to how many frames are captured each second. A higher frame rate is advantageous
when there is movement in the video stream, as it maintains image quality throughout.
Resolution
Image resolution is a measure of how much detail a digital image 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.
Bitrate
The bit rate (in kbit/s or Mbit/s) is often referred to as speed, but actually defines the number of
bits/time unit and not distance/time unit.
Enable H.264+
H.264+ combines intelligent analysis technology with predictive encoding, noise suppression,
and long-term bit rate control to realize a lower bit rate, which plays a significant role in cutting
storage costs and provides a higher return value for the investment.
Enable H.265+
H.265+ is an optimized encoding technology based on the standard H.265/HEVC compression.
With H.265+, the video quality is almost the same as that of H.265/HEVC but with less
transmission bandwidth and storage capacity required.
Note
● A higher resolution, frame rate and bit rate setting will provide you the better video quality, but
it will also require more internet bandwidth and use more storage space on the hard disk drive.
● H.264+ or H.265+ encoding technology is only available for certain models.