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- Joined: Thu Jul 21, 2022 5:27 am
- Real Name: brent griffin
The multi-channel DeckLink cards are capable of output and input of different video signals simultaneously. For example, on the DeckLink Duo 2, you get 4 channels (each up to 1080p60 capable) that can be assigned as either video inputs or video outputs. So you can use one of the SDI ports to output a video signal for some external processing and then bring it back into the one of the other SDI ports as a video input.
The multi-channel DeckLink cards behave similarly to having multiple separate video capture/playout devices installed in the computer. So you could have one program using one video channel (the first DeckLink subdevice) and a second program on the same computer using a different video channel (the second DeckLink subdevice), even though both DeckLink subdevices are actually on the same physical card.
In addition to the DeckLink Duo 2 (4-channels 1080p60), the other multi-channel DeckLink cards are the DeckLink Quad 2 (up to 8-channels 1080p60) and the DeckLink 8K Pro (up to 4-channels 2160p60).