We have been using Vmix to live stream our church services for the last few (2-3) years. Wanting to add a second camera and use a Roland v1hd switcher but can't get a picture in the vmix. It comes thru on the preview screen but not on vmix. And now, I can't even get the picture back to the way it WAS before trying to hook up the Roland. All I get is a blue screen on the vmix. Where the preview is. have tried restarting the computer, shutting off the camera, even UNPULGGING everything !! I have to state right now, I'm not a "Techie" type person. So as plain English as you can, Please. If anyone can help

I didn't think I would have to RE add the camera. It's the same camera, just going thru the vMix now. Yes, I tried both the A & B bus, neither work. We only have the one camera for now. Planning on getting a second camera. Wanted to try and get things set up for it. The capture is the same one we were using when we first set up the camera. a StarTech UVCHDCAP that came.

Honestly,I haven't even looked at it yet today.It's at our church and I didn't get out of the house today. I was trying to get ideas for when I do go over. And I was told that whatever we do to go into the vMix for the Live stream , it HAS to go thru the capture because of copyright issues. I was also looking at maybe we have to do some updates for our computer to recognize the Roland ?

Glad the issue was resolved and you can start using the Roland for your services.

So you have a failure point.

That could be the switcher, the HDMI card, the computer, the OS, or vMix.

Your first step should be narrowing it down.

Start simple--connect an HDMI Out on the switcher directly to your monitor. Make sure there's a picture and that it's the picture it's supposed to be.

If there's no picture, your issue is in the board or cable. Nothing you do on the computer will fix it.

If you're getting the picture you expect, then you have to move on to more complicated things.

Your signal chain is Camera -> Switcher -> StarTech UVCHDCAP -> Computer, correct?

With absolutely nothing plugged in to the StarTech UVCHDCAP, see if you can still open it as a camera in vMix.

If you can, what does the result give you?

Now, close vMix and open the native Windows 10 camera app. See if you can select it from the camera selection menu.

If you can, what's the result?

Close the app, turn on your HDMI camera, and connect it directly to the capture card. Reopen the native Windows 10 camera app. Has anything changed?

If you can't select it in the native camera app, whether anything is connected or not, I'd suggest, if possible, installing OBS and running the same tests above, in the exact same manner, with "OBS" substituted for "native camera app".

If everything above is working as intended, run through the step again with the board connected instead of the camera.

That you had it working before, and that you're getting the same blue screen with the camera connected directly, which previously worked without issue, leads me to think there's something else at play here.

I'd also suggest asking your friend of a friend what specific actions they took. Knowing that could help diagnose the issue. It could also help you fix it moving forward if there was a settings issue that somehow reverted.

I know this is a lot, but there are a lot of things to rule out. It could be something as simple as a bad cable or a finnicky port.

Going through and testing everything is really the only way to say with any certainty where the problem lies.