Published by 沈垚 / ShenYao China on Dec 1, 2024

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Why should I report an Issue with USB Dual Camera?

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About USB Dual Camera

1. You can record video or capture snapshot. , OR turn your phone into a wireless IP Camera via build-in RTSP and HTTP Server for security monitoring WITH Bi-directional audio support, you can use your browser to view, of course, include "IP Camera" App.

2. "USB Dual Camera" can let your android device connect to 2 USB WebCams or video capture cards via USB-OTG at the same time.

3. Supports UVC WebCam WITH microphone and UVC video grabber WITH audio input(Up to 4K via HDMI, Supports progressive and interlaced video). MJPEG(or H. 264, H. 265, HEVC) format is required when using 2 cameras at the same time.

4. "USB Dual Camera" can push the video and audio to RTMP/SRT live media server and use for network live broadcast.

5. Using HEVC for video recording/streaming requires Android 5. 0 or above, and the device must supports HEVC codec.

6. "USB Dual Camera" can record video into two mp4 files synchronously if you connect to 2 USB WebCams at the same time and record.

7. Using AV1 for video streaming requires Android 10 or above, and the device must supports AV1 codec.

8. On Android 9 and above, Camera permission is required to get fully USB Video device access.

9. *** The Pro version can save video record and snapshot into external SD Card or USB Disk, supports loop-recording and provides some extra features (e. g.

10. "USB Dual Camera" can add timestamp, GPS, speed and other info on the video frames while recording.

11. It support auto video recording which based on Motion Detection and the video record can be uploaded to FTP server automatically and notify you via Email!

USB Dual Camera Customer Insights

1. I've purchased Pro as well but still couldn't find any option to do it, any help?Can i ask for help? It works with my UVC device (SQ11), but when i use your other app "USB Camera - Connect EasyCap or USB WebCam", it does not work.

2. So I can stream myself from the device camera and maybe my UVC capture card as the second input.Possible to remove Watermark when using EasyCap (VCR to Phone)? When recording it watermarks "AV TO USB2.****" on top left.

3. This product only broadcasts in "side by side full"Can you make support for usb audio input? I want to get video source from usb webcam and audio source from usb mixer simultaneously when doing live stream.

4. Thank youFrustrating..- as the reviewer Diego states below, only 1 webcam works at a time on my SG S22 Ultra which defeats the whole purpose of this app (both free & paid for Pro versions) yet it works perfectly fine on my SG S20 which is frustrating.

5. Thanks.Last time I tried to stream on Twitch on the road with a 3D camera apparently Android security locks out this program being piped to Streamlabs obs.

6. And the "flip horizontal" button unable to change the screen direction on live stream, only work on phone screen preview.

7. Message: "AV to USB2.0: This device does not support MJPEG/H.264 format, may unable to start preview!".

8. I'll gladly change my review if I could find a way to broadcast live on Twitch in stereoscopic 3D using two usb cameras.

9. I will buy pro version if these problems got fixed, thanks!Great app will purchase premium for this version as well, just wish it could mix USB or UVC with devices internal cameras.

10. I connect two UVCs through a OTG Hub and only one works at a time.

11. I wanted to use it too, so i can use it only for on camera.

Steps to Troubleshoot & Fix USB Dual Camera Issues

1. Fix USB Dual Camera Not Working/Crashes/Errors/Unresponsive & Black/White screen:


  1. Restart USB Dual Camera: Restarting the app will resolve most errors.
  2. Update the USB Dual Camera App. Here is how:
    1. On Android goto PlayStore » Search for "USB Dual Camera" » Open USB Dual Camera » click "Update".
    2. On iPhone, goto AppStore » Your profile » Available Updates » Check for USB Dual Camera » click "UPDATE".
  3. Clear USB Dual Camera app cache: Clearing cached data will force your app to retrieve the latest data directly from USB Dual Camera servers.
    1. On Android, goto Settings » Apps » Select "USB Dual Camera" » click Storage » click "Clear Cache".
  4. Check USB Dual Camera app permissions. If any of these permissions required to use your device's features are disenabled, USB Dual Camera might not work.
  5. Uninstall and reinstall USB Dual Camera. If nothing else has worked, completely uninstall USB Dual Camera then reinstall.
  6. Restart your device. Last, restarting your device can often clear most problems causing USB Dual Camera not working


2. Fix USB Dual Camera Server issues & Internet Connection


  1. Check network connection: An unstable Internet will make USB Dual Camera be unable to connect to it's servers. Ensure your wi-fi is working then restart app.
  2. Disable VPN: VPN can cause connection errors and lead to USB Dual Camera not working. Make sure all VPNs are off
  3. Enable background data: When Background data is turned off, USB Dual Camera may not be able to connect to the Internet when running in the background.

Reported Issues