Apple Color 1.5 - Manual (Page 143)

• Force RGB: This option is disabled for standard definition projects. This setting is meant
to be used when you're working with high definition Y
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C
B
C
R
source media that you're
monitoring on an external broadcast monitor via a supported broadcast video interface.
It determines how the RGB image data that's calculated internally by Color is converted
to Y
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C
B
C
R
image data for display:
• If Force RGB is turned off: This conversion is done by Color in software. This consumes
processor resources and may noticeably reduce your real-time performance as a
result.
• If Force RGB is turned on: Color sends RGB image data straight to the broadcast video
interface that's installed on your computer and relies on the interface to do the
conversion using dedicated hardware. This lightens the processing load on your
computer and is recommended to optimize your real-time performance. When
monitoring legalized video between 0 and 100 IRE, there should be a minimal
difference between the image that's displayed with Force RGB turned on or off. When
Force RGB is turned on, super-white and out-of-gamut chroma values will not be
displayed by your broadcast display, nor will they appear on external video scopes
analyzing your broadcast video interface's output. This limitation only affects
monitoring; the internal image processing performed by Color retains this data. As
a result, you will always see super-white image data on the Color software scopes
when it's present, and uncorrected super-white and out-of-gamut chroma levels are
always preserved when you export your final media. If Broadcast Safe is turned on
in the Project Settings, you may not notice any difference in the display of these
"illegal" levels, since they're being limited by Color.
• Disable Vid-Out During Playback: Turning this option on disables video output via your
broadcast interface during playback. While paused, the frame at the position of the
playhead is still output to video. This is useful if your project is so effects-intensive that
video playback is too slow to be useful. With this option turned on, you can make
adjustments and monitor the image while paused and then get a look at the program
in motion via the preview display, which usually plays faster.
• Update UI During Playback: Turning this option on allows selected windows of the Color
interface to update dynamically as the project plays back. This updates the controls
and scopes during playback from grade to grade, but potentially slows playback
performance, so it's off by default. There are two options:
• Update Primary Display: Updates the main interface controls in the Primary In,
Secondaries, Color FX, Primary Out, and Geometry rooms. Turning this option on lets
you see how the controls change from grade to grade and how they animate if you
have keyframed grades.
• Update Secondary Display: Updates the Scopes window. This is the way to get updated
video scopes during playback. With this option turned off, the video preview still
plays, but the video scopes disappear.
143 Chapter 5 Configuring the Setup Room