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Learn about HDMI 2.1 and enjoy the unparalleled 8K experience
2025-04-07
1. What is HDMI 2.1?
The HDMI 2.1 technical standard was born on November 30, 2017. It is a technical standard for ultra-high-quality audio and video transmission in the future. At present, the performance of the HDMI 2.0 standard is already quite powerful for most people, with a bandwidth of 18Gbps and support for 4K/60Hz video. The performance of HDMI 2.1 is improved several times, with a bandwidth of up to 48Gbps, supporting videos with resolutions and refresh rates such as 4K/120Hz, 8K/60Hz, and 10K.
One of the biggest highlights of HDMI 2.1 is its powerful bandwidth capability. Compared with the previous generation standard, the bandwidth of HDMI 2.1 is as high as 48Gbps. This huge improvement enables it to easily support 120Hz high refresh rate display at 4K resolution and 60Hz display at 8K resolution. This means that whether it is a fast-paced game scene or a delicate movie picture, HDMI 2.1 can provide seamless connection, making every frame of the picture smooth and bringing users a double shocking experience.
In addition to excellent bandwidth performance, HDMI 2.1 also introduces a number of new technologies to further enhance the user experience. For example:
① Support for dynamic HDR: Ensure that every scene and even every frame of the video displays ideal values for depth of field, details, brightness, contrast, and a wider color gamut.
② Enhanced Audio Return Channel (eARC): Allows the TV to transmit high-bitrate 3D surround sound audio directly to the device through the HDMI cable
③ Automatic Low Latency Mode (ALLM): Also known as automatic game mode, it automatically enables the TV's low-latency "game" mode when playing games, allowing smooth, lag-free, uninterrupted viewing and interaction.
④ Quick Media Switching (QMS): Eliminates delays that may cause black screens before displaying content.
⑤ Quick Frame Transmission (QFT): Reduces latency, games are free of lag, and VR virtual reality can be experienced in real time
⑥ Variable Refresh Rate (VRR): Very important for gamers, it solves the problem of tearing at high refresh rates, while making paused and incoherent images smooth.
2. Application scenarios
① Home theater:
HDMI 2.1 Cable can be used to connect high-definition TVs, projectors, and audio systems to provide a clearer and smoother audio-visual experience.
Users can use HDMI 2.1 Cable to connect the TV to the projector, and then connect the audio system to the projector to get a larger screen and better sound effects.
② Games:
HDMI 2.1 Cable is suitable for connecting high-refresh-rate game monitors and game consoles, providing smoother and more natural game pictures and response speeds.
Gamers can use HDMI 2.1 Cable to connect game consoles to high-refresh-rate game monitors to get clearer, smoother game pictures and faster response speeds.
③ Audio equipment:
HDMI 2.1 Cable can also be used to connect high-quality audio equipment, such as stereo speakers or headphones, to provide clearer and more realistic sound effects.