CameraCapturer must be initialized before calling startCapture

Question

Facing this issue while implementing WebRTC in Android:

Caused by: java.lang.RuntimeException: CameraCapturer must be initialized before calling startCapture.

build.gradle(:app)

dependencies {
  ......
  implementation 'org.webrtc:google-webrtc:1.0.+'
  ......
}

// Chunk causing problem:

private void getVideoSource() {
    // isScreenCast = false
    videoSource = peerConnectionFactory.createVideoSource(false);
    surfaceTextureHelper = SurfaceTextureHelper.create(Thread.currentThread().getName(), rootEglBase.getEglBaseContext());
    VideoCapturer videoCapturer = createCameraCapturer(new Camera1Enumerator(false));
    localVideoTrack = peerConnectionFactory.createVideoTrack("200", videoSource);
    localVideoTrack.addSink(local_renderer);
    if(videoCapturer != null)
        videoCapturer.startCapture(1000,1000,30); // <- Here is the Exception

}

CameraCapturer is deprecated. There is Camera1Capturer now available.

score 3 · Accepted Answer · edited Sep 20 '20 at 04:01

3

You need to initialise before you use it

 private void getVideoSource() {
    VideoCapturer videoCapturer = createVideoCapturer();
    VideoSource videoSource;
    //Create a VideoSource instance
    if (videoCapturer != null) {
        SurfaceTextureHelper surfaceTextureHelper = SurfaceTextureHelper.create("CaptureThread", rootEglBase.getEglBaseContext());
        videoSource = factory.createVideoSource(videoCapturer.isScreencast());
        videoCapturer.initialize(surfaceTextureHelper, this, videoSource.getCapturerObserver());
    }
   

    localVideoTrack = factory.createVideoTrack("100", videoSource);

    //Create MediaConstraints - Will be useful for specifying video and audio constraints.
    audioConstraints = new MediaConstraints();
    videoConstraints = new MediaConstraints();

    //create an AudioSource instance
    audioSource = factory.createAudioSource(audioConstraints);
    localAudioTrack = factory.createAudioTrack("101", audioSource);

    if (videoCapturer != null) {
        videoCapturer.startCapture(1024, 720, 30);
    }
    binding.localGlSurfaceView.setVisibility(View.VISIBLE);
    // And finally, with our VideoRenderer ready, we
    // can add our renderer to the VideoTrack.
    localVideoTrack.addSink(binding.localGlSurfaceView);
}

edited Sep 20 '20 at 04:01

Babar Bashir

193
3
12

answered Apr 10 '20 at 09:28

Shweta Chauhan

6,739
6
37
57

thanks. Can you guide me how to use device public IP address (assume I have it from STUN Server) and save it in `SessionDescription`? – Faizan Mubasher Apr 15 '20 at 10:58
Not yet... I am still wandering how to do simple P2P Video Chat without involving any server. Though I am using Firebase Messaging for sending offer and answer. But that also not completed yet. – Faizan Mubasher Apr 15 '20 at 11:45
ok, let me share some code. I will share you github link. I recently did this work. We have one public server – Shweta Chauhan Apr 15 '20 at 11:46
@FaizanMubasher : My demo will take time to complete but you can check this https://github.com/IhorKlimov/Android-WebRtc – Shweta Chauhan Apr 15 '20 at 12:13
1

Thanks! Much appreciated – Faizan Mubasher Apr 15 '20 at 12:19
Kotlin example -> https://github.com/ShwetaChauhan18/WebRTC-Android – Shweta Chauhan Apr 15 '20 at 12:55
1

Need help https://stackoverflow.com/questions/58429603/onicecandidate-is-never-call-after-setremotedescription-webrtc-android – Faizan Mubasher Apr 16 '20 at 11:09

CameraCapturer must be initialized before calling startCapture

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