HIKVISION HiWatch Series User Manual page 47

Sub-stream is a second codec that runs alongside the mainstream. It allows you to reduce the
outgoing internet bandwidth without sacrificing your direct recording quality. Sub-stream is often
exclusively used by smartphone applications to view live video. Users with limited internet speeds
may benefit most from this setting.
Step 1 Go to Configuration > Record > Parameter.
Step 2 Configure recording parameters.
 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.
 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.
A higher resolution, frame rate, and bitrate provide you a better video quality, but it also requires
more internet bandwidth and uses more storage space on the hard disk drive.
Step 3 Click Apply.
Digital Video Recorder User Manual
47