Tenveo Video Conference Interpretation 4K

Tenveo video conference interpretation 4K

With the continuous advancement of videoconferencing technology and the continuous development of science and technology, video conferencing also ushered in the era of 4K, then 4K video Tenveo,it is also necessary to introduce to everyone.

4K refers to a resolution of 3840x2160 or 4096x2160, a signal with a width of less than 3840 cannot be called 4K, and a height of less than 2160 cannot be called 4K. The same 4K signal also has different differences, such as the frame frequency is 30Hz or 60Hz, the color space is YUV or RGB, etc. These display quality difference for the display device is very good contrast.

Frame frequency: 30Hz or 60Hz

The maximum frame rate of the HDMI 1.4 standard is 30 Hz, which means that 30 frames per second are transmitted. This parameter of HDMI 2.0 is a maximum of 60 Hz, that is, 60 frames per second. The parameters of 60 frames are twice as high as those of 30 frames, and the picture quality and details are better. The higher the number of frames, the smoother the picture, and the most intuitive experience. In the case of fast-moving viewing angles, 60 frames of residual images are much smaller than 30 frames. High, the closer the picture is to the real world observed by the human eye.

The difficulty of 4K 60Hz processing lies in large data volume and high bandwidth. The common spot frequency of 1920x1080 60Hz is 148MHz, while the 4K 60Hz point frequency is 594MHz, which requires high signal transmission and processing.

Color Space 4:4:4 or 4:2:2

For 4K, color space is also a very important parameter, the most widely used is RGB and YUV formats, they are all a color coding method YUV. YUV and RGB mode can be converted to each other, and RGB represents red, green and blue, YUV three letters represent the brightness signal and U, V color difference signals.

YUV, 4:4:4, represents YUV's three signal sampling storage modes. In addition to 4:4:4, 4:2:2, 4:2:0, and 4:1:1 sampling methods are common. format. In simple terms, the 4:4:4 signal is lossless, with richer information and better picture color, but it requires very high storage space and transmission bandwidth. The other three ways are to save bandwidth and storage space and to compress colors. The 4K that we said before was mostly 4:2:2.

Compared to RGB, YUV's compression method has its inherent advantages. It can separate the information of contours and colors, compressing only the colors, and not affecting the contours. With the continuous development of technology and the demand of the audience, YUV 4:4:4 also. Beginning more and more. Nowadays, a 4K display with a 4:4:4 ratio of 60 Hz is generally referred to as a true 4K. With the continuous development of demand in the audiovisual field, display equipment and signal processing equipment capable of achieving this standard are becoming more and more abundant.