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HDMI (High-Definition Multimedia Interface) cable is the standard for high-definition video transmission. It supports not only high-definition video signals but also digital audio, allowing for a single cable solution to connect devices such as TVs, projectors, and monitors to source devices like Blu-ray players, gaming consoles, and computers.

HDMI cables facilitate higher resolution formats, including 1080p and even 4K and 8K, along with advanced audio formats. This capability makes them ideal for modern home theater setups and professional AV environments, where high image and sound quality is essential.

Other types of cables like composite video cables are limited to standard-definition video and do not support high-definition formats. VGA cables are primarily for video transmission (without audio) and are largely an older standard, also not designed for HD formats. Optical audio cables are meant for transmitting audio signals and do not carry video at all. Hence, HDMI cables are the preferred choice for high-definition video transmission due to their versatility, capability, and support for high-quality formats.