I assume you are running XPression Studio Edition. That edition is limited to 3x Inputs. You have 2x BlackMagic and 1x Directshow inputs already, so the software is restricting you from adding the 4th input.
If you want 4 inputs you need to purchase the Extra Input option for XPression Studio.
If you want more than 4 inputs you need to upgrade from XPression Studio to XPression Studio Flex.
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Original Message:
Sent: 03-30-2026 08:49
From: Johannes Pedri
Subject: NDI framebuffer only adds output
Hello there,
so I am currently looking to get a website with transparency into xpression. For that I setup an OBS scene with an NDI filter that only outputs that one browser source.
When I'm trying to add a NDI framebuffer in Xpression I can set the output name and input name, but the live source shader will show no NDI inputs. Since both NDI in- and outputs are on the same machine this should not be a network problem. It also only gives me an output and no input but no option to add an input. I should add that I'm on Xpression 10.5 so NDI should be supported
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Best wishes,
Johannes
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