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vMix Capture Card Low Frame Rate
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Joined: 1/12/2025(UTC) Posts: 8
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At a recent broadcast on vMix 28.0.0.39, any camera inputs in vMix using my Blackmagic DeckLink Quad 2 8-Channel, were suffering from a very low framerate. If I had to estimate, vMix was dropping about 50% of the frames.
If I accessed the camera inputs using Blackmagic's native software in Windows, the cameras on the Quad 2 card appeared normal, telling me it was a vMix issue.
No amount of restarting vMix, trying a default profile, resetting the inputs, or even restarting Windows fixed the dropped frames in vMix.
Camera inputs on my separate Blackmagic Declink 8K Extreme were perfectly normal inside vMix.
vMix had been working fine with this setup for several months without issue.
Fortunately during a pause in the broadcast I was able to, as a last resort, close vMix, update my nVidia drivers and reboot the computer. Everything then started working normally and was fine from thereout. I don't see why a nVidia driver update would have fixed things though?
My question is - what would have caused this to randomly occur and how can I prevent this from happening again?
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vMix Capture Card Low Frame Rate
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