Section 6
–
Video Output Menu
Copyright 2007-2017 Lumagen, Inc Radiance Pro, Rev 071719
17
Set the
CMS1->Colorspace->2020<->601/709
to
Auto Convert
. If Auto Convert is enabled and the output
colorspace is different than the input colorspace, the Radiance Pro automatically converts the data to appropriate
values for the selected output Colorspace. For example, if you have a projector that is limited to a Rec709 color
Gamut, select the output Colorspace as SDR709, and enable auto convert the Radiance Pro will convert the data so
that the HDR “2020” colors within the physical Rec 7
09 limit of the projector appear correctly to the best ability of
the projector.
HDR Intensity Mapping
is disabled by default. It is enabled in
Output->CMSs->CMS1->HDR
Mapping
menu. When you enable
HDR Intensity Mapping
you should also select the output CMS1->Colorspace as an
SDR mode.
Changing the
Display Max Light
adjusts the HDR source to display light ratio. The
Display Max Light
is set in
the same menu. You can increase or decrease the
Display Max Light
using the arrow keys in 100 nit steps, or
you can use the number keys to enter a value from 50 to 9990 in 10 nit steps.
With
HDR Intensity Mapping
control parameters at default values, use the
Display Max Light
as a coarse
“brightness” control
while watching a (paused) very bright scene.
See the
Video Input Menu
and
Calibration
sections for more information on adjusting
Display Max Light
.
The command is:
MENU
→
Output
→
CMS’s
→
[CMS]
→
HDR Mapping
CMS Label
You can change the CMS memory labels. Use the
and
buttons to highlight a letter. Use the
and
buttons
to change the letter. Capital letters, small letters, numbers, symbols, and blank are available. The command is:
MENU
→
Output
→
CMS’s
→
[CMS]
→
Label
Styles Menu
The Style memory stores settings for the HDMI format used to drive the display. There are menus to set the HDMI
format, size, position, aspect ratio, and gray-bars for the image on the display. These output styles (Style0 through
Style7) can be selected for use in the Output Setup menu.
HDMI Output Type
You can specify the digital outpu
t range as “RGB
-
PC level” (e.g. for 8
-
bit 0 to 255) or “RGB
-
Video level” (e.g. for 8
-
bit 16 to 235). “YCbCr 422” is the recommended output format. For the HDMI RGB output, setting the level as
video
allows blacker-than-black and whiter-than-white video levels to be output from the Radiance. The command
is:
MENU
→
Output
→
Styles
→
[Style]
→
HDMI Format
→
Type
→
(Auto, RGB/Level=Vid,
RGB/Level=PC, RGB/36bpp Dual Out/Level=Vid, YCbCr444, YCbCr422)
Note that for some output rates (e.g. 4k60 using 9 GHz output cards) the mode may not be programmable. For
reference the 4k60 output mode using 9 GHz I/O cards is always 4:2:0, 8-bit. Note that the RGB/36bpp is
supported only for 9 GHz output cards.
Rate Match
Often streamers use a 60.00 Hertz output rate for their OSD, instead of the video standard of 59.94. In addition, a
small fraction of source material is sourced at 24.00/60.00 Hertz refresh rates instead of the standard 23.98/59.94
Hertz rates. In this case it may be desirable to slightly alter the output rate to match the input rate. However,
operation is smoother, and switching faster, if these are output at the video standard rates.
While the difference between 59.94 and 60.00 is small, if the OSD is 60.00 and the video 59.94 an HDMI output
restart is necessary due to the change in frequency. To eliminate this, you can select
Rate Match
= No. Note, that
if you watch material that is truly 60.00 or 24.00, there will be some dropped frames with this setting.
Most people are not sensitive to this, but other are. If you are sensitive you can instead leave Rate Match enabled.
The default setting is 'Yes.' The command is:
MENU
→
Output
→
Styles
→
[Styles]
→
HDMI Format
→
Rate Match
