There are many ways to fix webcam not working on OBS. Read and refer to the following article of ElectrodealPro to learn details of the error correction steps.
How to fix WebCam not working on OBS
Link to download the latest OBS Studio:
Method 1: Temporary error correction solution
The first temporary solution and also the first solution to fix the webcam not working on OBS is to restart the application. If the error persists, try restarting your computer and see if the error persists.
Also try disabling the anti-virus software you install on your system as well as the firewall and see if the webcam on OBS is working or not.
The other way is to uninstall OBS and reinstall the application.
Method 2: Fix webcam error on OBS not working
Before starting, try to check if other apps like Skype, Facetime, … on your computer are using a webcam. In case if other applications are using the webcam and cause the webcam not working error on OBS.
If the error persists, follow the steps below to fix the error:
Step 1: Open OBS on your computer.
Step 2: Access Scenes (scene) and choose Scenes first.
Step 3: Open webcam settings by visiting Source tabHere find and double-click your webcam name.
Step 4: Check the option Deactivate When Not Showing.
Step 5: Perform the same steps for each scene in OBS.
Method 3: Adjust webcam settings
If the webcam still isn’t working on OBS, access the webcam settings by following the same steps above and adjust options like camera resolution, FPS, video format, etc.
Method 4: Reinstall webcam
Follow the steps below to reinstall the webcam and fix the error on OBS:
Step 1: First, open the Device Manager window.
Step 2: Find and right-click your webcam in the list, select Uninstall, and disconnect the webcam from the computer.
Step 3: Wait a while and reconnect the webcam to the computer.
Step 4: Also, you can update the webcam driver from Device Manager by finding and right-clicking on the webcam, and selecting Update Driver.
Step 5: Restart your computer and see if the error persists.
Method 5: Update to the latest Windows version
Regularly updating drivers and the latest versions of Windows help fix most problems on your computer, including OBS errors.
The article above ElectrodealPro just instructed you how to fix the webcam not working on OBS. Hope the above article has provided you with useful information. In addition, for your reference How to fix OBS errors Other common ones here