We not too long ago reported that the HDMI Licensing Administrator stopped labeling newer HDMI shows with the two.0 model, and allowed producers the power to make the most of the HDMI 2.1 moniker, so long as it matches the requirements already set. This doubtlessly may cause a producer to label an HDMI 2.0 show as the two.1 model to falsify claims to shoppers and was seen by a Chinese language vendor working towards that actual state of affairs.
Now, there’s a new HDMI 2.1 variant about to be launched sooner or later sooner or later with the moniker of “HDMI 2.1a.”
The HDMI Licensing Administrator confirms new requirements for HDMI 2.1 with the addition of SBTM
What’s at the moment odd is the details about HDMI 2.1a, as will probably be quickly known as, was showing on the Licensing Administration’s web page however has since mysteriously disappeared with no explanations. It’s doable that there are a couple of last-minute selections to finalize the brand new normal to be used, however that in and of itself is pure hypothesis. VideoCardz has talked about that the knowledge could be discovered by way of Google Cache. One of many latest additions to the HDMI 2.1a is using Supply-Primarily based Tone Mapping or SBTM.
Supply-Primarily based Tone Mapping (SBTM) is a brand new HDR characteristic that permits a portion of the HDR mapping to be carried out by the Supply system as an alternative of the Show system. SBTM is particularly helpful in circumstances the place HDR and SDR video or graphics are mixed collectively right into a single image, comparable to picture-in-picture or a program information with an built-in video window. SBTM additionally permits PCs and gaming units to mechanically produce an optimized HDR sign as a way to maximize the utilization of the show’s HDR capabilities with out handbook person configuration of the Supply system.
— HDMI.org
Avid gamers and PC fanatics will see essentially the most use of the brand new expertise, as a result of potential for multiwindowed environments. The supply system, in essence, controls the tone mapping. This course of permits separate home windows to show both SDR or HDR optimized content material concurrently. TFTCentral states that the brand new SBTM is just not a alternative for the present HDR expertise (HDR10 and HLG, in addition to different choices). SBTM is ready to deepen the HDR expertise by providing extra functionality for optimization with HDR-capable units.
Supply: TFTCentral, VideoCardz
