WebRTC视频渲染问题（远程流）

Question

请查看以下代码，并让我知道显示远程视频时需要更改的内容。音频播放正常。正在工作的最新Webrtc库。在onAddStream方法中，我的Videotrack大小为1，但在remoteVideoTrack addSink方法中未呈现。

 private PeerConnection createPeerConnection(PeerConnectionFactory peerConnectionFactory, boolean isLocal) {
//
PeerConnection.RTCConfiguration rtcConfig = new PeerConnection.RTCConfiguration(getServerList());
//
PeerConnection.Observer pcObserver = new CustomPeerConnectionObserver("localPeerCreation") {
    @Override
    public void onIceCandidate(IceCandidate iceCandidate) {
        super.onIceCandidate(iceCandidate);
        //SignallingClient.getInstance().sendICECandidate(iceCandidate);
        if (iceCandidate.serverUrl.length() > 1)
            SignallingClient.getInstance().sendICECandidate(iceCandidate);
    }

    @Override
    public void onAddStream(MediaStream mediaStream) {
        super.onAddStream(mediaStream);
        Log.e("mytagVFrame", "Video Frame is OUt == " + mediaStream.videoTracks.size());
        VideoTrack remoteVideoTrack = mediaStream.videoTracks.get(0);
        remoteVideoTrack.setEnabled(true);
        ProxyVideoSink videoSink = new ProxyVideoSink();
        videoSink.setTarget(mRemoteSurfaceViewRenderer);
        remoteVideoTrack.addSink(videoSink);
    }
};
return peerConnectionFactory.createPeerConnection(rtcConfig, pcObserver);
//

}