Previewing on an External Broadcast Video Monitor

To check the final result in correct video colorspace and pixel aspect ratio, you can preview the current Viewer image on an external broadcast video monitor. This option requires additional hardware, such as a monitor output card or a FireWire port.

Our monitor out architecture interfaces directly with the AJA and BlackMagic device drivers, which are unified across their respective hardware lines, meaning all current supported cards for the versions detailed in Third-Party Library Versions should work. We've tested the following AJA and Blackmagic hardware:

AJA Cards	Stereoscopic	Platforms	Drivers
KONA LHi	No	Win, Mac, Linux	• Windows - 12.4.1 to 12.5.1.0 • Mac - 12.4.1 or higher post Nuke 10.5v1, 10.6.1 pre Nuke 10.5v1 • Linux - 12.3.0.59, 12.3.0.61, 12.4.1.1
KONA 3G	Yes (Both views through one output, so the Full Resolution option is not available.)	Win, Mac, Linux	• Windows - 12.41 • Mac - 12.4.1 or higher post Nuke 10.5v1, 10.6.1 pre Nuke 10.5v1 • Linux - 12.3.0.59, 12.3.0.61, 12.4.1.1
KONA 4	Yes (Both views through one output, so the Full Resolution option is not available.)	Win, Linux	• Windows - 12.41 • Linux - 12.3.0.59, 12.3.0.61, 12.4.1.1
KONA iOXT	No	Mac 10.9 and 10.10	• Mac - 10.6.1

Note: The following should be taken into account when using the Monitor Out functionality with AJA cards:
If you're running AJA cards on Linux, you can contact www.aja.com/support to obtain the correct drivers.
12-bit monitor output is only supported with dual connection cards, that is cards with two physical connections, not dual links combining two separate streams of data.
Nuke Studio is unable to send out the right eye separately using the 2nd output cable of KONA 3G cards. Instead, both views are sent through the 1st output and can be viewed using the side-by-side, anaglyph, and interlacing options.

Blackmagic Cards	Stereoscopic	Platforms	Drivers
DeckLink SDI	No	Win, Mac, Linux	Desktop Video 10.7 to 10.8.4
DeckLink HD Extreme 2	No	Win, Mac, Linux	Desktop Video 10.7 to 10.8.4
DeckLink Extreme 3D+	Yes	Win, Mac, Linux	Desktop Video 10.7 to 10.8.4
Intensity Pro 4K	No	Win, Mac, Linux	Desktop Video 10.7 to 10.8.4
DeckLink Studio 4K	Yes (Both views through one output, so the Full Resolution option is not available.)	Win, Mac, Linux	Desktop Video 10.7 to 10.8.4
DeckLink 4K Extreme	Yes	Win, Mac, Linux	Desktop Video 10.7 to 10.8.4
DeckLink 4K Extreme 12G	Yes	Win, Mac, Linux	Desktop Video 10.7 to 10.8.4

Nuke can output images to external broadcast monitors in either 8- or 10-bit RGB color modes. 10-bit color is automatically selected when the Viewer's gl buffer depth setting is half-float or float, provided it is supported by the monitor output card. In all other cases, 8-bit color is used.

Note: Selecting a monitor output mode with the phrase 10-bit in its description only outputs true 10-bit color if a gl buffer depth of either half-float or float is selected. Half-float and float modes are considerably slower to process, so it is recommended to stick with byte mode for monitor output unless 10-bit color is specifically required.

To Preview Output on an External Broadcast Video Monitor

Press S on the Viewer to open the Viewer settings.

From the monitor output device dropdown menu, select the external device you want to use and check enable monitor output. All available devices are automatically detected and listed in this menu.

From the monitor output mode dropdown menu, select the display mode for the device you selected in the previous step. The available options depend on the device you are using. By default, the most recently used display mode is selected.

Press Ctrl/Cmd+U, navigate to Viewer > Toggle Monitor Out, or click on the monitor output button in the Viewer overflow dropdown.

From now on, any output connected to the Viewer is sent to the monitor output device you selected.

The monitor output image is always full frame, unzoomed (1:1 ratio), and unpanned, regardless of what the Viewer it is linked to is set to. This means that slightly mismatching formats (for example, 640x512 / 640x448 for PAL/NTSC) are not rescaled to fit the monitor.

If you save your Nuke script with monitor output enabled, this setting is saved with the script. The next time you open the same script, monitor output is enabled.

To Disable Viewing on an External Broadcast Video Monitor

• Click on the monitor output button in the Viewer controls.

• Select Viewer > Toggle Monitor Output from the menu bar.

• Press Ctrl/Cmd+U. This can be particularly useful if you are using a monitor output device that can draw things on the screen you are using to display the Nuke window (such as the Digital Cinema Desktop Preview device installed with Apple Final Cut Pro).

• Press S on the Viewer to open the Viewer settings, and uncheck enable monitor output.

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