Table of Contents
Advertisement
configuration mode will automatically switch between day and night according to the
schedule.
3.2.2 Video / Audio Configuration
Go to Image
Video / Audio interface as shown below. In this interface, set the
resolution, frame rate, bitrate type, video quality and so on.
Click the "Audio" tab to go to the interface as shown below.
Three video streams can be adjustable.
Resolution: image resolution.
Frame rate: the higher the frame rate, the video is smoother.
Bitrate type: CBR or VBR. Bitrate is related to image quality. CBR means that no
matter how much change is seen in the video scene, the bitrate will be kept constant.
VBR means that the bitrate will be adjusted according to scene changes.
Bitrate: it can be adjusted when the mode is set to CBR. The higher the bitrate, the
better the image quality will be.
Video Quality: it can be adjusted when the mode is set to VBR. The higher the image
quality, more bitrate will be required.
I Frame interval: it determines how many frames are allowed between a "group of
pictures". When a new scene begins in a video, until that scene ends, the entire group
of frames (or pictures) can be considered as a group of pictures. If there is not much
movement in the scene, setting the value higher than the frame rate is fine, potentially
resulting in less bandwidth usage. However, if the value is set too high, and there is a
high frequency of movement in the video, there is a risk of frame skipping.
Video Compression: MJPEG, H264+, H264, H264S (Smart H.264), H265, H265+ or
H265S (Smart H.265). MJPEG is not available for main stream. ). If H.265/H.265+/
H.265S is chosen, make sure the client system is able to decode H.265/H.265+/
H.265S. Compared to H.265+/H.265, when there is no human or vehicle detected, the
bitrate will be automatically reduced with no effect on image quality by using H.265S.
Profile: for H.264, Baseline, Main and High profiles are selectable.
17
Advertisement
Table of Contents
