- Posts: 320
- Joined: Thu Dec 17, 2020 10:45 am
- Real Name: Florian Erfurth
This is a long-standing complaint from the community about all the DeckLink cards. The port order you're looking for is 1 3 2 4.
General speculation is that this is a holdover from some of their earlier generation cards where there were two input and two output ports. Each worked in tandem so it was 1 & 3 and in & out and 2 & 4 as in & out. The ports were physically next to each other because of this.
It's also worth noting that the 4 ports don't act fully independently. If one pair is put into key/fill mode the other pair must also be linked. This is different from the Duo 2 (which on the surface seems like an identical 1080 version) where all 4 ports are truly independent.
Some more discussion: viewtopic.php?f=3&t=91734