Upcoming HDMI 2.1a spec to add source-based tone mapping for HDR content

HDMI Forum, the entity responsible for issuing and licensing HDMI standards, will be announcing HDMI 2.1a at CES 2022. This is the next version of the latest HDMI 2.1 standard that is currently available, and will bring with it source-based tone mapping or SBTM.

According to The Verge, SBTM enables tone mapping of HDR content on the source device rather than the display. This means, if you have a Blu-ray player plugged into a TV and playing HDR content, the tone mapping for the HDR content will be done on the Blu-ray player rather than the television.

While the article does not…

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