Software to interact with DeckLink Cards

Read from DeckLink card with bmdcapture

bmdcapture -m 2 -A 1 -V 1 -F nut -f pipe:1

see bmdcapture -f for supported modes and inputs

Read from a DeckLink Card and feed it to voctomix

gst-launch-1.0 -v decklinkvideosrc mode=1080i50 connection=hdmi 
                    device-number=1 ! progressreport ! matroskamux ! tcpserversink port=10000 host=0.0.0.0

List DeckLink cards in a machine

ffmpeg -f decklink -list_devices 1 -i dummy

Read supported formats from a DeckLink Card

ffmpeg -f decklink -list_formats 1 -i 'DeckLink Mini Recorder'