Chapter 4 Recording and Playback
4.1 Recording
4.1.1 Congure Recording Parameters
Go to Camera → Video Parameters .
Main Stream
Main stream refers to the primary stream that aects 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
resoluon 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.
Resoluon
Image resoluon is a measure of how much detail a digital image can hold. The greater the
resoluon, the greater the level of detail. Resoluon can be specied 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
oen referred to as speed, but actually denes the number of
bits/me unit and not distance/me unit.
Enable H.264+
H.264+ combines intelligent analysis technology with predicve encoding, noise suppression,
and long-term bit rate control to realize a lower bit rate,which plays a
signicant role in cung
storage costs and provides a higher return value for the investment.
Enable H.265+
H.265+ is an opmized 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
resoluon, frame rate and bit rate seng will provide you the beer 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
38
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