The HDR (High Dynamic Range) video format is a video display gamma-
curve gamut standard updated for the expanded color-rendering capabilities of
today’s ultra high-definition television (both 4K and 8K) displays. The standard
dramatically increases the number of colors that can be carried in a UHD signal
to raise the number and luminescence of colors a UHD systems can display. The
HDR format will replace the outdated SDR (Standard Dynamtic Range) format,
which will become obsolete at some point in the near future.
The move toward the HDR (High Dynamic Range) video format was brought to
the consumer home video market with the introduction of 4K UHD (Ultra High-
Definition) Blu-ray Discs and players in 2016. HDR UHD is also available from
some streaming services. HDR video displayed on an SDR system will appear as
a very flat, almost greyish picture. The HDR format requires updated home video
equipment (HD monitor and UHD Blu-ray Disc player) to display as desired.
As HDR is applied to home video products, especially to black & white films of the
silent and golden eras, the range of greytones will dramatically increase and may
for the first time ever emulate the ethereal quality of projected nitrate prints.
More details on the HDR standard video format may be found on Wikipedia.
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