Connecting Caspar with Atem



Hi guys, i’m noob and i need to understand how to connect (Physically!) Casparcg with the atem tv studio.
Can you explain it to me as if I were an idiot? (well, maybe i am)
Thanks a lot


Well, let take for example you use Blackmagic card with two SDI outputs. One is Fill and other is Key. You connect those both to ATEM TV Studio, example SDI In 5 and SDI In 6.In ATEM Control you define DSK1 keyer with fill SDI5 and key SDI6. In case you use caspar as playout, you do not need key, just fill, and you can have it as regular input on any of 4SDI ins. Hope it will help.


Thanks a lot for helping me! So i need to buy a blackmagic card… No hdmi options?
Eventually do you have any suggestion about one card for a low budget project?
Thanks again
(I’m going to use CasparCg to overlay a scoreboard)


Getting synchronized HDMI key/fill graphics from a screen consumer is difficult. The card you want is the Deck link Duo 2. This assumes you are running 1080p60 or lower resolution. 4k will require a different card.

You can run SDI to HDMI converters if your SDI inputs are full. I am doing that with a Decklink Quad 2 and an ATEM 1 M/E (1st Gen) and it works fine.


you can try to connect HDMI, like secondary monitor and play screen consumer on it. Then put it in Upstream keyer on ATEM, and try to clip it for background color, but quality will be really bad in this solution, much better would be to use Blackmagic Duo 2 and separate fill and key.



I recently acquired the BM HyperDeck Studio Mini because I originally needed it to record our broadcasts onto SDI cards.

Although I could find cheaper devices for that, I’ve been with it because I could also use it for playback. We generally don’t have to record + playback at the same time but if that will happen I will need to buy a separate device for playback. Right now I don’t need it yet.

My question is: can I use this device with CasparCG for scoreboards, animated graphics and video playback and control them from the client?


Hyperdeck mini is only a recorder. You can not use it as playout card for Caspar