On this page

Configuring Audio, Video Input and Output devices - Android

In this guide we'll show you how to configure Audio, Video input and output devices from your Twilio Video Rooms API application. Taking advantage of the ability to control input and output devices lets you build a better end user experience.

Selecting a specific Video Input

CameraCapturer

The CameraCapturer provides video frames via the Camera API for a LocalVideoTrack from a given CameraCapturer.CameraSource.

1// Share your camera
2CameraCapturer cameraCapturer = new CameraCapturer(context, CameraSource.FRONT_CAMERA);
3LocalVideoTrack localVideoTrack = LocalVideoTrack.create(context, true, cameraCapturer);
4VideoView primaryVideoView = (VideoView) findViewById(R.id.local_video);
5
6// Mirror front camera
7primaryVideoView.setMirror(true);
8
9// Render camera to view
10localVideoTrack.addSink(primaryVideoView);
11
12// Switch the camera source
13CameraSource cameraSource = cameraCapturer.getCameraSource();
14cameraCapturer.switchCamera();
15primaryVideoView.setMirror(cameraSource == CameraSource.BACK_CAMERA);

Camera2Capturer

The Camera2Capturer provides video frames via the Camera 2 API for a LocalVideoTrack from a given camera ID.

1// Get the device camera IDs
2CameraManager cameraManager =
3        (CameraManager) cameraCapturerActivity.getSystemService(Context.CAMERA_SERVICE);
4String[] cameraIds = cameraManager.getCameraIdList();
5
6// This example uses the first Camera ID but applications can make their own decisions
7// about which Camera ID to use
8String cameraId = cameraIds[0];
9
10// Share your camera
11Camera2Capturer camera2Capturer = new Camera2Capturer(context, cameraId, camera2Listener);
12LocalVideoTrack localVideoTrack = LocalVideoTrack.create(context, true, camera2Capturer);
13
14// Render camera to a view
15VideoView primaryVideoView = (VideoView) findViewById(R.id.local_video);
16localVideoTrack.addSink(primaryVideoView);
17
18// Switch the camera source from the first camera ID to the second camera ID
19camera2Capturer.switchCamera(cameraIds[1]);

For more details and other best practices capturing video from the camera capturers, please reference the Video Android Quickstart.

Managing Audio With AudioSwitch

The Twilio Video Android SDK does not officially support audio device management. Please use AudioSwitch to manage audio focus and audio devices in your application.