What is the difference between DVI port and HDMI port?

There are many differences between DVI interface and HDMI interface, including the following points:

Appearance:

Size: DVI interface is larger than HDMI interface, occupies more space on the device, and DVI interface may not be as convenient as HDMI interface when plugging, some DVI interface also need to screw fixed, HDMI interface is more compact and flexible, more easy to use.

Interface shape: DVI interface is usually D-shaped, while HDMI interface is closer to a flat trapezoid.

Transmission capacity:

Video transmission:

Resolution support: Both interfaces can support high-resolution video transmission, and both can support high-definition resolution up to 1080p in the early days. However, with the development of technology, HDMI has been upgraded to support higher resolutions, such as 4K, 8K and even higher resolutions, while DVI's ability to support higher resolutions is relatively weak.

Refresh rate: Under normal circumstances, the HDMI interface can support a higher refresh rate at high resolution, which is better for the display of dynamic pictures and can provide a smoother visual experience.

Audio transmission: This is one of the main differences between the two. DVI interface can only transmit digital video signal, can not transmit audio signal. If you need to transmit audio, additional audio interfaces and cables are required. The HDMI interface can transmit digital video and audio signals at the same time, and the synchronous transmission of video and audio can be achieved through a cable.

Transmission distance:

The transmission distance of DVI cable is relatively large, in general, the effective transmission distance of DVI is less than 8 meters. HDMI through Repeaters and other equipment, can provide a longer transmission distance, HDMI cable up to 15 meters, more advantages in long-distance transmission.

Application scenarios:

DVI interface is mainly used in computer monitors, some projectors and other equipment, especially in the early liquid crystal display is widely used. However, with the popularity of HDMI interfaces, the application of DVI in consumer electronic devices has gradually decreased.

HDMI interface because of its ability to simultaneously transmit audio and video signals and good compatibility, is widely used in high-definition TV, set-top boxes, game consoles, Blu-ray players and other consumer electronic devices, is the current mainstream high-definition multimedia interface.

Compatibility:

HDMI interface has better compatibility, it can be compatible with DVI interface. The HDMI signal can be converted into a DVI signal by using a adapter or a conversion cable to connect to a display device with only a DVI interface. However, in turn, the DVI interface is not directly compatible with the audio transmission function of the HDMI interface, and can only achieve the transmission of video signals even through conversion.