Following are the ITU standards that govern digital high-definition TV.  Rec. 709 originally specified resolutions of 1,125 and 1,250 lines but added 1080 lines in 2000 to conform to digital TV (DTV).  For standard definition (SD) component digital standards, see 
Rec. 601.
In 2013, HDMI 2.0 added support for Rec. 2020 resolutions (see 
HDMI).
In 2016, Rec. 2100 added PQ and HLG high dynamic range (HDR) encoding (see 
PQ and 
HDR).
                          Frame   Color
 Rec.        Resolution   Rates   Depth
 709   1990  1920x1080i   24-60   10-12
             1920x1080p
 2020  2012  3840x2160    24-120  10-12
             7680x4320
 2100  2016  1920x1080p   24-120  10-12
             3840x2160
             7680x4320