The update adds ‘dynamic metadata’, which allows a high dynamic range (HDR) TV to adjust brightness levels on a scene-by-scene or frame-by-frame basis.
The current HDR10 standard uses static metadata that does not change during playback despite scene-specific brightness levels.
Samsung said all of its 2017 UHD TVs support HDR10+ and that its 2016 UHD TVs will gain HDR10+ support through a firmware update in the second half of this year.
Amazon said it will make HDR10+ available on its Prime Video streaming service globally later this year.
“As an advanced HDR10 technology, HDR10+ offers an unparalleled HDR viewing experience — vivid picture, better contrast and accurate colours — that brings HDR video to life,” said Kyoungwon Lim, vice president of visual display division at Samsung Electronics.
Samsung and Amazon Video first brought HDR to the market using the HDR10 open standard in May 2015.