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Loop the SDI or HDMI output of your edit suite, grading system or camera into a Blackmagic capture card. The SDI/HDMI IN row of dfine.io Studio sends that feed to Review or Streaming Classic. No hardware encoder is needed. You need dfine.io Studio, a Blackmagic DeckLink or UltraStudio card with the Desktop Video driver, and a Review room or a Streaming Classic stream.

Get Blackmagic Desktop Video

The driver for DeckLink and UltraStudio cards.

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1. Set up the input

1

Connect the feed

Cable the SDI or HDMI output of your source into the input of the card.
2

Open the gear

In Studio’s Sources panel, click the gear on SDI/HDMI IN. Without the driver the row reads Not available on this Mac.
3

Pick device and mode

Pick the Device and set Mode to the format of the incoming signal. Pixel Format, Color Space and Color Range match the signal as well. Until a card is chosen, the row reads No card chosen yet.

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2. Pick where it goes

In Review, open the room and create a source with the type WHIP, or use Quick Create. Click Copy Stream Key.In Studio’s Stream panel, set Destination to dfine.io Review. Server reads dfine.io Review · WHIP, fixed. Paste the key into Stream Key.
The Stream panel with Destination set to dfine.io Review and a stream key pasted
Paste the key of a WHIP source. Review refuses the key of an RTMPS source, those are meant for hardware encoders. Where the key is: stream key and server URL of a room.

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3. Start

Click the SDI/HDMI IN row to put it on air, then click Start Streaming. The row shows the card and the mode, for example UltraStudio 4K · 1080p25. The stream takes the size of the signal. To send a UHD feed as HD, tick Cap the stream at HD (1920x1080), see Stream settings.
dfine.io Studio with SDI/HDMI IN on air, the card and mode in its row and the incoming picture in the preview

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When nothing arrives

The row reads Not available on this Mac. Install Blackmagic Desktop Video, connect the card and restart Studio. More causes: Streaming from dfine.io Studio.