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"Could not find specified video device"

May 5, 2020 - 1:41pm #1

Hello, I've been trying to do a test project on vuforia but unfortunately I've hit a roadblock. the camera simply won't work for me. I'm probably making it harder for not using a proper webcam but instead a dslr. 

I've read other posts and my options were either software like sparkocam and camlink, I ended up giving up then, but last week Canon released their official software to turn the cameras into webcams and I decided to go back to trying it. As it stands the software is in beta, and doesn't work on some other programs like discord, so I don't know if it's the same case here.

I also have obs with the virtual cam plug in that lets me select it in other programs and that's the work around i've found for discord.

In unity however I get and error that says "Could not find specified video device":

ERROR - Could not find specified video device

UnityEngine.WebCamTexture:Play() Vuforia.WebCamTexAdaptor:Play()Vuforia.WebCam:StartCamera()Vuforia.CameraDevice:StartCameraDevice()Vuforia.CameraDevice:Start()Vuforia.VuforiaARController:StartVuforia(Boolean)Vuforia.VuforiaARController:StartAfterInitializationCompleted()Vuforia.VuforiaARController:Start()System.Delegate:DynamicInvoke(Object[])Vuforia.DelegateHelper:InvokeDelegate(Delegate, Object[])Vuforia.DelegateHelper:InvokeWithExceptionHandling(Action)Vuforia.VuforiaBehaviour:Start()


I've added a new profile on the xml file already but I can't fine a way around this, I'd like to know if there's any way to make this work or if I'm missing something, thanks.

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"Could not find specified video device"

January 23, 2021 - 4:13am #3

Did you find any Solution i have neraly the same problem. What I did is, I have created a Virtual Cam with OBS. And the cam is shown in Sykpe or something else, but vuforia brings me the exactly same error : ERROR - Could not find specified video device











Vuforia.DelegateHelper:InvokeDelegate(Delegate, Object[])



"Could not find specified video device"

May 6, 2020 - 7:26am #2


Unfortunately you followed the recommended steps of adding the camera to the webcamprofile.

The issue might lie with the fact that the system does not recognize it as a webcam.

Have you tried adding the camera directly in the webcamprofile? Where you able to use the DSLR as a webcam without emulating it through OBS? If yes, use the name that appear there for the webcamprofile.

Thank you.

Vuforia Engine Support

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