Search TipsSDI or HDMI Preview on an External Monitor or Projector
The Monitor Out feature allows you to preview Viewer images and audio on an external broadcast video monitor to check the final result, including the correct colorspace and aspect ratio. This option requires additional hardware, such as a monitor output card or a FireWire port.
Note: Audio scrubbing is not currently available through monitor output cards. Audio scrubbing is only supported through internal audio output devices.
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 Libraries and Fonts should work.
Note: Blackmagic cards don't currently support 10-bit output outside the SMPTE-range. Check that your footage does not contain illegal values to avoid artifacts in 10-bit output.
We've tested the following AJA and Blackmagic hardware:
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AJA Card: |
KONA LHi |
KONA 3G |
KONA 4 |
KONA iOXT |
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Formats |
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SD |
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HD |
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2K |
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UHD |
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4K |
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BNC |
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HDMI |
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Stereoscopic Support |
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No |
Yes |
Yes |
No |
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Platforms |
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Win, Mac, Linux |
Win, Mac, Linux |
Win, Linux |
Mac 10.9 and 10.10 |
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Drivers |
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Driver 15.1 or later, available here: https://www.aja.com/products/kona-4#support |
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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.
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Blackmagic Card: |
DeckLink SDI |
DeckLink HD Extreme 2 |
DeckLink Extreme 3D+ |
Intensity Pro 4K |
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SD |
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HD |
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2K |
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UHD |
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4K |
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BNC |
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HDMI |
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Stereoscopic Support |
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No |
No |
Yes |
No |
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Platforms |
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Win, Mac, Linux |
Win, Mac, Linux |
Win, Mac, Linux |
Win, Mac, Linux |
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Drivers |
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Driver 10.11.4 or later, available here: https://www.blackmagicdesign.com/uk/support/ |
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Blackmagic Card: |
DeckLink Studio 4K |
DeckLink 4K Extreme |
DeckLink 4K Extreme 12G |
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Formats |
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SD |
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HD |
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2K |
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UHD |
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4K |
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BNC |
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HDMI |
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Stereoscopic Support |
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Yes (Both views through one output, so the Full Resolution option is not available.) |
Yes |
Yes |
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Platforms |
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Win, Mac, Linux |
Win, Mac, Linux |
Win, Mac, Linux |
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Drivers |
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Driver 10.11.4 or later, available here: https://www.blackmagicdesign.com/uk/support/ |
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Some monitor out cards allow you to extend or mirror your desktop so that Nuke Studio’s user interface is visible on the monitor. Please refer to your card’s documentation for more information.
To preview output on an external broadcast video monitor:
| 1. | Navigate to Window > Monitor Output. |
The Monitor Output toolbar displays in a floating pane.
Note: If you're working with multi-view footage, additional controls display to determine the stereo mode and view to output.
See Stereoscopic and Multi-View Projects for more information.
| 2. | Select the external device you want to use from the output device dropdown. All available devices are automatically detected and listed in this menu, along with the following default options: |
• None - disables the monitor out feed.
• Floating Window - opens a pseudo output monitor window, without the need for a monitor device and card. This is intended for full-screen use without displaying any of the interface.
| 3. | Select the Viewer to feed to the output monitor using the source viewer dropdown. Selecting Active Viewer always displays the Viewer that is currently selected in the workspace. |
| 4. | Select the view mode using the A/B selection dropdown. |
Note: For multi-view/stereo footage, selecting A/B mode in this dropdown forces the monitor to output the timeline Viewer settings and the view to output controls are disabled.
| 5. | Click  to apply the active Viewer’s filtering, gamma, and gain to the monitor output. |
| 6. | Click  to flip the output vertically. |
| 7. | Click  to switch between full-range 0-255 (default) and 16-236 (ITU-R BT.610-4). This button can correct the image output for certain monitor out cards. |
| 8. | Select the colorspace to apply to the image. If you’ve specified an OCIO configuration file in the preferences, these custom LUTs are also applicable. |
Note: If you plan to use the OCIO config file specified during exports, ensure that the Preferences > Project Defaults > Color Management > Export > use OCIO nodes when exporting to a Comp checkbox is enabled.