User Manual

Chapter 4 Recording and Playback
4.1 Recording
4.1.1 Congure Recording Parameters
Go to Camera → Video Parameters .
Main Stream
Main stream refers to the primary stream that aects 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
resoluon 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.
Resoluon
Image resoluon is a measure of how much detail a digital image can hold. The greater the
resoluon, the greater the level of detail. Resoluon can be specied 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
oen referred to as speed, but actually denes the number of
bits/me unit and not distance/me unit.
Enable H.264+
H.264+ combines intelligent analysis technology with predicve encoding, noise suppression,
and long-term bit rate control to realize a lower bit rate,which plays a
signicant role in cung
storage costs and provides a higher return value for the investment.
Enable H.265+
H.265+ is an opmized 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
resoluon, frame rate and bit rate seng will provide you the beer 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.
Network Video Recorder User Manual
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