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The factors that affect the video effect of the IP camera
Nov 29, 2016

The factors that affect the video effect of the IP camera

 

IP Camera is a digital equipment with network transmission capacity.The video effects of the ip camera is affected by many factors, Mainly determined by these factors.

 

1.the lens

Lens is the first pass video capture, the quality of the lens will naturally affect the effect of the video, although there are many kinds of lenses, However, the effect of the lens focal length on the video effect is worth noting, which means that you should consider whether to select the model of the lens can be replaced, or consider whether to select the zoom lens.

 

二、图像传感器

2. image sensor

这是影响视频效果的关健因素。目前市面上有CMOSCCD两种,成像方面,在相同像素下CCD的成像通透性、明锐度都很好,色彩还原、曝光可以保证基本准确。普通CMOS的成像质量和CCD还是有一定差距。

There are two kinds of CMOS and CCD, in the same pixel imaging, CCD imaging, Octavia has good permeability, color reduction, can ensure accurate exposure. The imaging quality of ordinary CMOS and CCD still have certain gap.

 

三、视频压缩算法(也叫视频压缩格式)

3. video compression algorithm (also called video compression format).

这是网络摄像机里最重要的关健因素目前市面上的网络摄像机主要有H.264MPEG4两种视频压缩算法。前者压缩能力更强,视频损耗更少,因此更清晰并更流畅。

This is the most important network cameras factors currently available on the market network cameras are mainly H.264 and MPEG4 two video compression algorithms. The former has a stronger compression ability, less video loss, more clear and smooth.

 

四、图像格式

4. image format

图像格式是决定了视频图像的实际像素,分DVD格式和VGA(640*480)格式和CIF(352*288)格式两种,不同的同像格式像素不同,录像文件大小也不一样。如果不是相同的图像格式,我们不能光凭录像所需的硬盘大小来确定网络摄像机的优劣。

Image format is to determine the actual pixel of the video image, DVD format and VGA (640*480) format and CIF (352*288) format two, different pixels of the same format, video file size is not the same. If it is not the same image format, we can not just rely on the size of the hard disk to determine the size of the video camera to determine the merits of the network.

 

五、帧率

5. frame rate

众所周知,任何视频文件都是由连续的图片组成的,一张图片我们就叫它为一帧,如一秒钟的视频由25张连续的图片组成,这时的帧率就是25/秒。在PAL制式下,25/秒的视频能非常逼真的表现动作。

As everyone knows, any video files are composed of a continuous picture, a picture we called it a frame, such as a second video from 25 consecutive images, then the frame rate is 25 frames per second. In the PAL standard, 25 frames / second video can be very realistic expression of the action.

 

六、双码流

除以上九条以外,红外夜视能力、超低照度、宽动态、强光抑制等功能也是网络摄像机的一些重要参数。综上所述,网络摄像机的选型需要掌握一定的专业知识并更有耐心。不选贵的只选对的,希望大家能选择到自己合适的网络摄像机。

In addition to the above five, the software, infrared night vision capabilities, ultra low illumination, wide dynamic, strong suppression ,front-end storage, and other factors are also the important parameters of the network camera. In summary, the selection of network cameras need to have some professional knowledge and more patient. Do not choose the expensive only choose the right, hope you can choose the right ip camera.

 

 

Keywords: IP camera, H.264, lens, sensor

 

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