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vMix output works but input doesnt on Decklink Quad 2 card - vMix input stays black but outputs do work with external renderer
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Bright7  
#1 Posted : Tuesday, August 12, 2025 12:54:34 AM(UTC)
Bright7

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Hi guys.

I have been working on this for a couple of hours.

We run a windows 11 pc 24H2 with vMix 28.0.0.42 and i use a blackmagic decklink quad 2 with driver v15.0.

I cant get any input in vmix with this card and i tried installing older versions of decklink driver but that also didnt work.
Then i tried using the external renderer to use the card to output content and that it does..

Did anybody else have this problem or know what i can try? Schermafbeelding 2025-08-11 om 16.53.22.png (1,784kb) downloaded 24 time(s). Schermafbeelding 2025-08-11 om 16.53.28.png (3,814kb) downloaded 1 time(s). Schermafbeelding 2025-08-11 om 16.53.46.png (3,751kb) downloaded 1 time(s). Schermafbeelding 2025-08-11 om 16.53.13.png (3,334kb) downloaded 1 time(s).
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knbPixels  
#2 Posted : Tuesday, August 12, 2025 1:59:39 AM(UTC)
knbPixels

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I use the same card. Did you use the BlackMagic software to setup the ports? They might all be set to outputs. You have individual control over each port, this is apart from the card driver utility
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dmwkr  
#3 Posted : Tuesday, August 12, 2025 2:02:30 AM(UTC)
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Bright7  
#4 Posted : Tuesday, August 12, 2025 2:10:12 AM(UTC)
Bright7

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Originally Posted by: knbPixels Go to Quoted Post
I use the same card. Did you use the BlackMagic software to setup the ports? They might all be set to outputs. You have individual control over each port, this is apart from the card driver utility


I have set it up with desktop video but I didn’t notice any setting to only use the card as outputs? What would that be?
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Bright7  
#5 Posted : Tuesday, August 12, 2025 2:11:14 AM(UTC)
Bright7

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Originally Posted by: dmwkr Go to Quoted Post
Maybe the mapping is the problem:

https://www.vmix.com/kno...k-quad2-to-be-8-channels


The mapping is correct as the link shows. Using all the 8 in/outputs as I wish. Outputs work but inputs stay black..
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