Which type of connector is commonly used for high-definition video signals in AV systems?

The HDMI connector is widely recognized as the industry standard for transmitting high-definition video signals in AV systems. One of the key reasons for HDMI's popularity is its ability to carry both high-definition video and audio over a single cable, simplifying installations and reducing cable clutter. Unlike other formats, HDMI supports higher resolutions, including 1080p and beyond, as well as various advanced video formats such as 4K, 3D, and even HDR.

Moreover, HDMI incorporates digital transmission, which helps to maintain signal integrity over longer distances compared to analog connections. This is particularly important in professional AV environments where high-quality video output is essential.

In contrast, while VGA is an older standard primarily designed for computer graphics and lacks audio capability, RCA connectors are generally used for standard definition video and are less suited for high-definition applications. Similarly, S-Video provides better quality than composite video but still falls short in resolution and features compared to HDMI. Thus, HDMI is the preferred choice for high-definition video signals in modern AV systems.