Nhat Nguyen

I think it is because of camera. Camera has auto focus feature, it will give a little gray, then light. If camera preview is full gray, can not display video...

Sorry I dont really understand the reason, it is better to give us a video. My app also is used in many phones and many cameras but I dont see...

- try another phone - try another camera => give conclusion: problem caused by camera or phone. I think it is because of camera. --- Then, use camera Helper to...

When using lib external camera, you needs to open camera. Default lib will open with VGA (640x480). You can ask camera open with another size such as HD, FHD by...

"Default lib will open with VGA (640x480)." => a faster way: pls open UVCCameraHelper.java, find variable previewWidth, previewHeight and change it to another number. Such as 1920x1080, 1280x720, 960x640, 640x360,...

You can add callback into audio recorder to get exact error code, then trace the reason on google. Perhaps android10 disallow to record in background, maybe. Or after some minutes,...

perhaps your app did not request storage permission before staring the capturer code? You can read the code again to find the reason

You can download the source code as ZIP, create a module and see the source in Android studio. Then, search this "surface should be one of SurfaceHolder" in the source,...

> You need access to you error logs in order to find the problem. I use a app called MatLog because debugging by USB isn't possible if your camera is...

@RiponDas pls zip your project and send here, I will help you debug it.