ProPresenter- Alpha Key Output with Blackmagic Decklink Card

Learn how to use a Blackmagic Decklink card inside an external Thunderbolt enclosure with ProPresenter to send professional SDI video — including true alpha keyed output — to your video switcher.

In this tutorial, we use the Decklink Duo 2 to walk through the full setup from hardware to ProPresenter configuration, including how key and fill signals work and how to bring a live video feed back into ProPresenter as an input.

*What you'll learn:*
- Why Decklink cards are the best option for key and fill output in ProPresenter
- How to physically identify the SDI and reference connectors on your enclosure
- How the Duo 2's connector pairing maps to video channels
- How to configure your channels in Blackmagic Desktop Video
- How to set up your output in ProPresenter with alpha keying (PreMultiplied vs. Straight)
- How to configure an External key for your video switcher
- How to bring your switcher's program feed back into ProPresenter as a live video input
- What fill and key signals actually look like — and how your switcher uses them
- How to configure a downstream key in an ATEM switcher

All Decklink cards and Thunderbolt enclosures featured in this video are available in the Renewed Vision Store: https://renewedvision.com/store.php?item=dc&cat=broadcast_video

📌 Watch the full ProPresenter training series for more tutorials.

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Видео ProPresenter- Alpha Key Output with Blackmagic Decklink Card канала Renewed Vision