using USB cam for Android Zoom meeting

Hey @KeeHC, unfortunately, I'm going to assume there's no easy way around it or possible.  It looks like by default (iOS) that I have no option to select a camera, just defaults to my integrated camera. The only way I'm assuming this would work is if you can override your default camera with the external webcam via USB-C or the device connected through your charging port. Also, I'm unaware of best practices for that. 

Google Play has many apps for this.  I use "usb Camera apop for Huawei Samsung"   Fine app, many tech options eg adding Bluetooth mic, zoom image.

This used to be possible.  When the pandemic started I had to a project that was using android STB for video and had to  move to google meet to continue it was a huge mess and They have no good reason to do it. 

How to share video and audio from an external USB web camera connected to an Android phone in a Zoom meeting.

22 November 2023,  USA.

Neither Zoom or Skype supports external web cams on Android devices.  Here is a workaround I use as an alternative to using a separate live-streaming service.  It’s just running any Android USB webcam app and Zoom concurrently, then sharing the screen to show the webcam video instead of the phone camera video.  It does require a few phone settings changed that are unfortunately well-hidden.  I use this method on my Pixel 6a Android 14 phone for hands-on remote teaching away from a PC or laptop.  Or live sharing from a webcam used as a bodycam from a cell phone.    

1. Other than a phone, you will need:

• Any PC web cam, including inspection cameras. 
• PC webcams use USB-A connectors, but phones use Micro-USB (older) or USB-C (since 2019) adaptor that is OTG-compatible.  Unless the camera already has a USB-C connector.
• Choose a USB webcam app from the Google Play Store.  There are many.  I will use ‘USB Camera Standard’ here.

1. Check that the phone supports USB ‘OTG’ (On The Go).  To the best of my knowledge, all recent Android phones do, but there are surely exceptions.  The Google Play store has several apps just to check if your phone uses USB OTG.
2. Change a few settings on your Android phone.  The instructions below are exact for Android 14 on the Pixel 6a, but there should be equivalents on any OTG-compatible Android phone:
1. Click ‘Settings’.
2. If you haven’t already done so, enable ‘Developer Options’: Settings > System > Developer options > switch ‘Use developer options’ on. 
3. In about the middle of the long list of option, click ‘Default USB configuration’.  It has no switch.  This will bring up the ‘USB’ menu with the ability to change the settings.
4. Fifth item down, click button ‘Webcam’.
5. Close Settings as usual by clicking the center button at bottom of screen.  
3. Connect the USB webcam to the phone.  This is where you will need the USB-A to USB-C adaptor if your webcam does not have a USB C connector (no PC webcams do).
4. Launch your USB camera app.  Verify that you see the camera video on the screen.
5. The USB camera app may or may not have a setting to use the webcam’s microphone, if it has one.  If you use it and the webcam is close to the phone with the speaker on, you will get an echo effect.  Turn down or mute the phone speaker to avoid this, or use Bluetooth earphones.
6. Minimize the web cam app and launch Zoom (same for Skype).  Start or join a meeting.  What you’ll see first is the view from the phone’s camera.
7. At the bottom of the Zoom app screen, click ‘Share’ and then ‘Screen’.  Zoom will display a message “Start recording or casting with Zoom?”.  Click ‘Start now’.  You’ll see the regular phone desktop screen.  Click the right bottom button and reopen the webcam app.  The external USB camera video will now be displayed and shared with all meeting participants. 
8. When sharing the screen, you will still have full control of the USB Camera app.  Switch it to full screen mode so the webcam image fills the phone screen and the Zoom windows of the participants. 
9. When you end the Zoom meeting (from your Android phone), be sure to also end the webcam app or it will continue running in the background.
10. For meeting participants on any platform:
1. There is no difference from the normal Zoom experience.  As usual, there’s the corner cases for Zoom meetings.  E.g., it may ask a host or participant if they want to ‘Reclaim Host’ or ‘Stay co-host’.  If so, it’s best to click ‘Stay co-host’ so that the zoom meeting can be ended by the original host, i.e., the Android phone.    
2. As usual with Zoom, any participant can also share their screen if the host allows it, so they can use  the same procedure to share external web cam video from a phone.

Following the above instructions from Loragen, I do not have a "screen" option when I click the "share" button.  I use my Samsung tablet A8 for zoom meetings. I mostly need to use it when I use the whiteboard feature. I want to use an external camera so the view of me as I am talking through a whiteboard presentation is from an external camera instead of the built-in one on my tablet. I often write on the whiteboard and would like to show my face as I talk and write. Is it possible to have an external camera show my face as I'm talking while writing on the tablet/whiteboard?