What is the difference between S-terminal and YUV?

Source: Internet
Author: User

The S-terminal and YUV components are only a connection interface (not a basis for quality determination). As for the video quality, it depends entirely on the video transfer rate, it is not that the S-terminal must be a low-quality 350 wire, but the YUV is a 425 wire, which is a conceptual error.
Q: The broadcast-level cameras have 50 thousand million yuan and up to 425 million yuan, and they are all output through the YUV component interface. If they are all lines, how can the camera have a price difference of dozens of times? Beaecam Recorder also has this problem. The Recorder of 30 thousand yuan and the recorder of several 100,000 yuan are all YUV component interfaces, and the price is also dozens of times the price difference? What are their differences? In fact, the price is different because of the different video transmission rates. The broadcast-level video transmission rate is 5 Mb/s, up to 50 MB/S. The video transmission rate determines the quality and price. It is not as long as the YUV component is 425 lines. If the video transmission rate is 1 Mb/s, even the YUV component is inferior to the VCR (home compound signal ), americans all adopt JVC recorders at S-terminals with adjustable video transfer rates, rather than Sony batecam standards.
The real y/C (s terminal) is a five-wire joint, which means two-way Video Brightness Signal, two-way video color signal, one-way public shield ground, and its matching brightness and color splitter. You can also find that the interface signal of terminal S and YUV components (three shielded connectors: Y is the brightness, U is the color, V is the color difference) are actually similar arrangements, it's just the difference between Signal Separation and combination. Why is the YUV video output by Sony's batecam recorder better than the S-terminal? The reason is that YUV components are used for recording on TV stations, and YUV components are used for broadcasting during broadcasting without any loss. However, when the S-terminal is used for broadcasting, the brightness signal must be split into two parts, of course there is a loss. If the S-terminal is used for input and the S-terminal is used for broadcasting, you will find that the quality of the S-terminal output is better than that of the YUV component output, because if the YUV component output is used, when the second signal is aggregated into one path, the loss is also inevitable. The five-way separation signal of the S-terminal is a historical necessity and an inevitable trend for the development of digital videos. With the increasing application of digital videos, all devices will adopt the S-terminal in the future. The pixel resolution of digital TV sets is 800*600, and the S-terminal is used for high definition input and output.
The S-terminal has the same video transmission rate problem. Y/C components (S-terminals) are used in places that do not use Sony batecam standards ), different video quality is produced by changing the video transmission rate of the S-terminal. The S-terminal uses a 5 Mbit/s video transmission rate, which is a standard broadcast-level video, if the 6 Mbit/s video transmission rate is used, the video quality is perfect. In digital channels of TV stations all over the world, the output code streams of encoder are both 6 Mb/s. Most American TV stations use high-speed y/C (S-terminal ), the numbers are all y/C (S-terminals). Can you tell us that the quality of TV videos in the United States is inferior to that in China?

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