On an extremely complex composition that I can't unfortunatly post I couldn't get 2 Receive Blackmagic Video nodes using 2 Blackmagic UltraStudio Mini Recorders to work in the same composition properly. Watch link below to see an example of the issue. Each BM UltraStudio Mini Recorder has it's own address and can be used in OBS together and usually worked in a much simpler Vuo composition but has issues in the complex composition. What's even stranger is that swapping the BM node out of the receive live video node fixes the issue with nothing else changed so this has to be an issue with the BM node itself I think. Right?
I have tried to create a simpler composition showing the issue but only ran across the issue one other time. However after a reload of that project it started working properly and I wasn't able to recreate the issue on that project again.
Have you found a workaround?:
Make sure you are using MacOS 10.14.3 or earlier. With nothing else changed I replaced one of the Receive Blackmagic Video nodes for a Receive Live Video node and this resolved the issue.
In macOS 10.14.4, compositions with a Receive Live Video or List Video Devices node no longer work and sometimes crash.
The underlying problem is that, starting in macOS 10.14.4, a video library that Vuo uses (Apple’s QTKit) is broken. Other apps that use QTKit have also stopped working.
The problem will be fixed in Vuo 2.0, as it no longer relies on QTKit. See our mailing list / blog for updates on the estimated release date.
