In our work and life, we cannot do without the video cable. We need to connect the set-top box and the TV when watching TV, connect the host and the display when we work, and connect the laptop and the projector when casting the screen in a meeting. So choosing a good video cable is very important.

There are currently four common video interface types: VGA, HDMI, DVI, DP, so what is the difference between these four video cables? How should I choose?

1. DP
DP connector
DisplayPort is a high-definition digital display interface standard, which can be connected to computers and monitors, as well as computers and home theaters. As the successor to DVI, DisplayPort will add support for high-definition audio signal transmission while transmitting video signals, while supporting higher resolution and refresh rates. For data transmission, DisplayPort uses the "micro-packetised" format. At the same time, DisplayPort has a high degree of scalability, and more new content can be added in the future.
The DP interface can be understood as an enhanced version of HDMI, which is more powerful in audio and video transmission.
2. HDMI
HDMI
HDMI cable is the abbreviation of high-definition multimedia interface cable, which can transmit high-definition video and multi-channel audio data with high quality to ensure high-quality video and audio signal transmission.
Compared with the thicker VGA and DVI cables, the HDMI cable is convenient and high-definition. This allows it to be connected to the DVD player, receiver and PRR with one cable. In addition, HDMI devices have the "plug and play" feature, and the signal source and the display device will automatically "negotiate" to automatically select the most suitable video/audio format.
3. DVI
DVI connector
DVI interface is a technology for high-speed transmission of digital signals invented by the Digital Display Working Group (DDWG) established on the Intel Developer Forum in September 1998, including DVI-A and DVI-D And DVI-I three different types of interface forms. DVI-D has only digital interfaces, DVI-I has digital and analog interfaces, and the current application is mainly DVI-D (24+1).
DVI is a high-definition interface, but without audio, that is to say, the DVI video cable only transmits picture graphics signals, but not audio signals.
4. VGA
VGA connector
VGA (Video Graphics Array) is a video transmission standard introduced by IBM with PS/2 in 1987. It has the advantages of high resolution, fast display rate, and rich colors, and has been widely used in the field of color displays. Supports hot plugging and does not support audio transmission.

The performance ranking of these four monitor data lines: DP>HDMI>DVI>VGA. The most popular interface is VGA, but because VGA is an analog signal, it has been eliminated by the mainstream and gradually replaced by other interfaces. DVI, HDMI, and DP are all digital signals and are the current mainstream.




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