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Help with Decklink Duo inputs and output
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Joined: 7/1/2019(UTC) Posts: 8 
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Hi all! I hope this isn't a silly question! I have a Blackmagic Decklink Duo 2 which I use to connect 2 SDI cameras (Sony PXW-X70). I understand this capture card has 4 inputs and 1 is a reference in. I use channels 1 and 2 (I think) for video capture. I want to use the other 2 channels as well (2 more cameras) however I am struggling to understand how the inputs work. I was watching this - The guy talks about the 4 channels however he explains something about the connectors that are paired. Any ideas what this means please? I dont have 4 cameras atm but looking to add these but before I do, I want to make sure my capture card can accept 4 inputs. I ust vMix software to stream. Also any recommendations on using a HDMI capture card as well as this SDI to add more inputs such as an SLR camera with no SDI.
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Rank: Advanced Member
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Joined: 11/11/2016(UTC) Posts: 378  Location: Europe Thanks: 23 times
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open BMD Desktop Video Setup
there goto "Connector Mapping" for all 4 Inputs
4:26 in the YT Video
you have to seperate all 4 SDIs
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Originally Posted by: sacchin 
Also any recommendations on using a HDMI capture card as well as this SDI to add more inputs such as an SLR camera with no SDI.
I prefer a HDMI to SDI Converter, so you can use longer cables
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see here  Duo2 settings.PNG (116kb) downloaded 8 time(s).
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 1 user thanked Peter1000 for this useful post.
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Hello. When you say "vmix overwrites the videostandard" means that if we have for example in vmix a 576p preset and in blackmagic desktop setup we have 1080p, when we use external from vmix it will be 576p?
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Rank: Advanced Member
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Originally Posted by: nikosman88 Hello. When you say "vmix overwrites the videostandard" means that if we have for example in vmix a 576p preset and in blackmagic desktop setup we have 1080p, when we use external from vmix it will be 576p? AFAIK this depends on the firmware of the BMD Device normaly yes, but it's better you also set the output ind the BMD Setup you need
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1 user thanked xaver for this useful post.
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