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5.4.3 Congure Recording Parameter
Steps
1. Go to Conguraon → Record → Parameter .
2. Congure recording parameters.
Main Stream
Main stream refers to the primary stream that aects data recorded to the hard disk drive
and will directly determine your video quality and image size. Comparing with the sub-
stream, the main stream provides a higher quality video with higher resoluon and frame
rate.
Sub-Stream
Sub-stream is a second codec that runs alongside the mainstream. It allows you to reduce the
outgoing internet bandwidth without sacricing your direct recording quality. Sub-stream is
oen exclusively used by smartphone applicaons to view live video. Users with limited
internet speeds may benet most from this seng.
Frame Rate
Frame rate 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.
Note
Higher resoluon, frame rate, and bitrate provide you beer video quality, but it also requires
more internet bandwidth and uses more storage space on the hard disk drive.
3. Click Apply.
Network Video Recorder User Manual
32
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