Hi there! I understand you're trying to get started with your Moment Camera app on your Mac running OS X 10.15, but you're seeing a black screen instead of the camera feed. Let's work together to figure this out.

First, can you tell me if this black screen happens immediately when you open the app, or after you try to take a photo or switch cameras? Also, have you tried restarting your Mac since noticing the issue? Sometimes a simple restart can help with camera initialization problems.

In the meantime, here’s a step-by-step approach you can try:

1. Restart Your Mac
Close the Moment Camera app, then restart your Mac. This refreshes system resources and can fix temporary glitches with camera access.

2. Check Camera Permissions
Navigate to System Preferences > Security & Privacy > Privacy tab > Camera. Make sure Moment Camera is allowed to access the camera. If it’s unchecked, tick it and relaunch the app.

3. Quit Other Apps Using the Camera
Sometimes other apps accessing the camera can interfere. Ensure apps like FaceTime, Zoom, or other camera software are fully closed.

4. Update the Moment Camera App
Check if you have the latest version of the Moment Camera app installed. Updates often fix bugs related to hardware compatibility.

5. Reset the Moment Camera App Settings
If the app has a settings reset option, try resetting to default.

6. Test the Camera with Another App
Open the built-in Photo Booth or FaceTime app to see if the camera works there. If the screen is black on those too, it’s likely a system-level issue.

If the above steps don’t fix the black screen, there could be a few other angles:

- Sometimes kernel extensions or drivers related to the camera might be having trouble launching properly.
- On macOS 10.15 (Catalina), system security changes restrict some apps’ camera access; ensuring permissions are properly granted is key.
- If the camera works in other apps, this might be a Moment Camera app specific bug, and I can help gather logs or escalate to the developers.

Could you please let me know which steps you’ve tried so far and what behavior you observe in other apps accessing the camera? That way, I can guide you further accurately.

My Moment camera was black. I was charging my iPhone through my Mac and Moment decided it didn't like that. Your info was helpful in that I turned my iPhone off for a few minutes and disconnected the charger. When I turned it back on, the Moment camera works now. Thank you! That was easy enough!

I’m glad to hear that turning off your iPhone and disconnecting the charger helped get your Moment Camera working again! Charging your iPhone through your Mac can sometimes trigger temporary conflicts with camera access or related hardware resources, so your solution was spot on.

Just to add some context, this kind of issue can occur because when your iPhone is charging via USB from your Mac, the system might prioritize power management or USB device connections that can briefly interfere with apps like Moment Camera trying to access the camera hardware. Restarting the device helps reset these connections.1

If you bump into the issue again, a quick device restart and temporarily disconnecting charging cables is a reliable first step. Also, keep your Moment Camera app updated to minimize bugs related to hardware access.

Is there anything else about the Moment Camera or the iPhone charging setup that you want to check or optimize? Are you satisfied with the solution I provided?