How to Output OBS Multiview to DeckLink Monitor

This guide provides a step-by-step walkthrough on how to configure OBS Studio to output a multi-view layout to a physical monitor using a Blackmagic DeckLink card. Since OBS Studio’s native Multiview feature cannot be cast directly to a DeckLink playout device, you will learn the industry-standard workaround of creating a custom Multiview scene and routing it via the DeckLink filter.

Step 1: Install Drivers and Connect Hardware

Before configuring OBS Studio, ensure your hardware and software drivers are properly set up.

  1. Connect your physical monitor to the SDI or HDMI output port of your Blackmagic DeckLink card.
  2. Download and install the latest Blackmagic Desktop Video drivers from the official Blackmagic Design website.
  3. Restart your computer to ensure the operating system and OBS Studio recognize the DeckLink card.

Step 2: Create a Custom Multiview Scene in OBS

Because OBS Studio’s default “Multiview” interface cannot be directly selected as a DeckLink output source, you must build a custom grid scene that acts as your Multiview.

  1. Open OBS Studio.
  2. In the Scenes box, click the + (plus) icon to create a new scene. Name it Multiview Output.
  3. In the Sources box, add the scenes or camera inputs you want to monitor by clicking the + icon and selecting Scene (to nest existing scenes) or Video Capture Device.
  4. Resize and position these sources into a grid layout (e.g., a 2x2 or 3x3 grid) on your canvas to match your preferred multiview look.

OBS Studio allows you to apply a DeckLink output filter directly to any individual scene. This will stream your custom Multiview scene to your physical monitor.

  1. Right-click on your newly created Multiview Output scene in the Scenes list.
  2. Select Filters from the context menu.
  3. Click the + icon in the bottom-left corner of the Filters window.
  4. Select DeckLink Video Output from the list of available filters. Name it, then click OK.
  5. In the filter settings, configure the following parameters:
    • Device: Select your Blackmagic DeckLink card from the dropdown menu.
    • Video Format: Choose the resolution and frame rate that matches your physical monitor’s specifications (e.g., 1080p at 59.94fps).
  6. Click Close.

The custom Multiview layout will now actively output through your Blackmagic DeckLink card to your connected physical monitor in real time.