使用setLocalRenderer和setRemoteRenderer方法分别设置本地和远程渲染器，然后使用UnityYuvConverter转换从本地渲染器获取的视频帧，在设置自定义处理器时调用setVideoProcess，并将其设置为包含转换的处理器。

以下是示例代码：

private void startCall() { ... localRender = (SurfaceViewRenderer) findViewById(R.id.local_video_view); remoteRender = (SurfaceViewRenderer) findViewById(R.id.remote_video_view);

 PeerConnectionFactory.initializeAndroidGlobals(this, true, true, true);
 factory = new PeerConnectionFactory();
 
 VideoCapturer capturer = getVideoCapturer();
 VideoSource videoSource = factory.createVideoSource(capturer, sdpMediaConstraints);
 localVideoTrack = factory.createVideoTrack(LOCAL_MEDIA_STREAM_VIDEO_TRACK_ID, videoSource);
 
 localRenderer = new VideoRenderer(localRender);
 localVideoTrack.addRenderer(localRenderer);
 
 remoteRenderer = new VideoRenderer(remoteRender);
 
 AudioSource audioSource = factory.createAudioSource(sdpMediaConstraints);
 localAudioTrack = factory.createAudioTrack(LOCAL_MEDIA_STREAM_AUDIO_TRACK_ID, audioSource);
 ...

}

public void setVideoProcess() { localVideoTrack.removeRenderer(localRenderer); localCustomProcessor = new CustomVideoProcessor(); localCustomProcessor.setRender(localRenderer); videoSource.adaptOutputFormat((int) (localCustomProcessor.getWidth()), (int) (localCustomProcessor.getHeight()), 15); localVideoTrack.addRenderer(localCustomProcessor); }

private static class CustomVideoProcessor implements VideoRenderer.Callbacks { private static final String TAG = "CustomVideoProcessor"; private VideoRenderer render; private UnityYuvConverter converter; private ByteBuffer buffer;

 public CustomVideoProcessor() {
     /*
      Create UnityYuvConverter. The last parameter 1 means that video should be flipped since OpenGl has Y coordinates flipped regarding to OpenCv which is used in Unity.
    */
     converter = new UnityYuvConverter(OpenGlUtils.getExternalOESTextureObject(), 320, 240, 1);
 }

 public void setRender(VideoRenderer render) {
     this.render = render;
     render.addRenderer(this);
 }

 public int getWidth() {
     return 320;
 }

 public int getHeight() {
     return 240;
 }

 public ByteBuffer getFrame() {
     return buffer;
 }

 @Override
 public void renderFrame(VideoRenderer.I420Frame i420Frame) {
     buffer = i420Frame.yuvPlanes[0];
     /*
      Flip video
     */
     converter.render(buffer, i