Hikvision DS-7604NI-M1/4P User Manual

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For opmized image contrast enhancement.

8.3 Congure Video Parameters

Video parameters would aect the live view image and recording le.

Go to System → Device Access → Device Conguraon → Device Parameter → Video Device →

Video Parameters. Select a camera, and congure parameters as your desire.

Main Stream

Main stream refers to the primary stream that aects 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 resoluon 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 sacricing your direct recording quality. Sub-stream is

oen exclusively used by smartphone applicaons to view live video. Users with limited internet

speeds may benet most from this seng.

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 Type

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 rather than distance/me unit. Two types including variable or constant are

available.

Frame Rate

It refers to the number of frames captured each second. A higher frame rate is advantageous

when there is movement in the video stream, as it maintains image quality throughout.

I-Frame Interval

I-Frame also referred as intra picture, I-Frame is the rst frame of every GOP (a video

compression technology of MPEG). It can be viewed as pictures aer compression. I-Frame

interval is the amount of frames between two connuous I-Frames.

8.4 Congure Privacy Mask

The privacy mask protects personal privacy by concealing parts of the image from live view or

recording with a masked area.

Network Video Recorder User Manual

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Hikvision DS-7604NI-M1/4P 4-ch 1U 4K NVR