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HDMI 4K is backwards compatible with earlier versions of the HDMI specification, significantly increasing bandwidth to 18Gbps and adding key enhancements to support the market demand for enhanced consumer video and audio experiences.
HDMI 4K dramatically increases bandwidth to 18Gbps and includes the following advanced features:
- resolution up to 4k@50/60 (2160p), 4 times the resolution of 1080p/60 video, for the final video experience.
- multi-dimensional immersive audio experience with up to 32 audio channels.
- up to 1536kHz audio sampling frequency for the highest audio fidelity.
- send two video streams simultaneously to multiple users on the same screen.
- simultaneous transmission of multi-stream audio to multiple users (up to 4).
- support wide Angle cinema 21:9 video aspect ratio.
- dynamic synchronization of video and audio streams.
- CEC extensions provide more extension commands and control over consumer electronics devices through a single point of control.