First cable for HDMI 2.1 appears online in the web store

By admin On Sep 19, 2017

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The first ultra high speed cable, which is suitable for the HDMI 2.1 standard, has appeared in Apple’s online store. Compared to the current high-speed HDMI cables, this cable achieves a much higher bandwidth of up to 48 Gbit/s.

The Belkin cable is two meters long and costs thirty euros. This specific cable supports a resolution of up to 4096×2160 pixels according to the specifications. The maximum bandwidth of 48Gbit/s is significantly higher than what is supported by current high-speed HDMI cables, which reach a maximum of 18Gbit/s.

Early this year, the HDMI Forum announced the HDMI 2.1 standard; the specifications will be finalized later this year, after which the first TVs with HDMI 2.1 are expected to be released at the end of 2017 or in 2018. HDMI 2.1 is primarily a standard for the future; resolutions up to 10k are supported with a refresh rate up to 120Hz. HDR playback is supported up to a resolution of 8k.

Game mode variable refresh rate is also supported, with which the display and the video card or APU work completely synchronously, so that tearing and stuttering are prevented. HDMI earc is also supported with HDMI 2.1, so that the high-quality bitstream audio formats, such as Dolby Atmos and DTS:X, can be forwarded in the highest quality via the ultra-high-speed cable to, for example, a receiver or soundbar. HDMI 2.1 also supports the rec2020 color standard with 16bit colors.

Furthermore, with HDMI 2.1 there is support for dynamic HDR, such as HDR10 + and Dolby Vision. HDMI 2.0a only supports static metadata; HDMI can adjust the HDR display per scene or per frame by supporting dynamic metadata. However, the HDR standards that use dynamic metadata, such as HDR10+ and Dolby Vision, are already supported by the current HDMI standards. Dolby Vision is characterized by the fact that the metadata is integrated into the video signal, which means that it has been supported since HDMI 1.4b. For hdr10 hdmi 2.0a is necessary; in principle no hdmi 2.1 would be needed for hdr10+.