Can someone repost here, since i can not find on this new forum, which blackmagic cards are best for synchronous key + fill
I once used decklink 4k pro for this purpose.
But Decklink duo 2 can also be used which is better choice.
I use the Quad 2 which gives up to 4 key/fill pairs, but the Duo 2 is cheaper and has full size BNC connections.
The classic Decklink for FILL + KEY is 4k Extreme 12G
But you can also used Duo 2(2 FILL + KEY Simultaneously) and Quad 2 (4 FILL + KEY )
I have used both without a problems and also you can configure different format on each output ex. one 1080i and the other 720p
The small bnc of Quad its not very practical you must buy 9 cable adapters (~20 euro each), but you reserved only one PCI slot.
The Studio 4K model has also FILL+KEY but only at SD ----NOT HD
Thank you all, this should be pinned somewhere, and maybe expanded with other cards like bluefish, to make it handy info for others here
thanx, i did not actually check wiki, my bad :))