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Obsbot virtual webcam crashes vMix
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AlanZ  
#1 Posted : Monday, January 15, 2024 6:00:26 AM(UTC)
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Although not a new issue, I though it worth pointing out that trying to add the output from the OBSBOT virtual camera (enableds via the OBSBOT Center or OBSBOT webcam program, and considered a legacy device by vmix) as an input in vMix causes vMix to shut down with this error:

========================================
27.0.0.58 - AddNewInput - 1/14/2024 2:54:33 PM
========================================
vMix.VMIXException: Capture Resolution is not supported by this device. ---> System.Runtime.InteropServices.COMException: Unspecified error

at DirectShowLib.DsError.ThrowExceptionForHR(Int32 hr)
at mz.k(IPin a, Guid a, Format a, lt a, Boolean a)
at mz.d(st a, lt a, CaptureType a, CaptureAudioType a, Size a, Boolean a, Boolean a, st a, bc a, Guid a)
--- End of inner exception stack trace ---
at nzzzzzl.a(WaitCallback a)
at mz.d(st a, lt a, CaptureType a, CaptureAudioType a, Size a, Boolean a, Boolean a, st a, bc a, Guid a)
at mz..ctor(Guid a, st a, lt a, CaptureType a, CaptureAudioType a, Int32 a, Int32 a, Boolean a, Boolean a, st a, bc a, Guid a)
at mo.a(Guid a, st a, lt a, CaptureType a, CaptureAudioType a, Size a, Boolean a, Boolean a, st a, bc a, Guid a, Boolean a)
at vMix.frmInput.b(Object a, EventArgs a)

Note that the virtual camera does work in other programs such as Zoom.
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admin  
#2 Posted : Tuesday, January 16, 2024 5:48:01 PM(UTC)
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Moved to hardware compatibility, as this is not related to vMix 27.

My guess is the virtual webcam driver is faulty and says it accepts a video format when it really doesn't.
For example this causes the OBS virtual cam to crash because it "accepts" UYVY (the default format in vMix) but then crashes as it doesn't in reality.

I suspect if you manually select a video format such as YUY2 it will work.

Regards,

Martin
vMix
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AlanZ  
#3 Posted : Tuesday, January 16, 2024 9:39:46 PM(UTC)
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I will give that a try. However, keep in mind that it’s vMix that crashes, so hopefully there is a more graceful way of dealing with the error.
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AlanZ  
#4 Posted : Wednesday, January 17, 2024 2:58:48 AM(UTC)
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Preselecting YUY2 avoids the vMix crash.
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