Advanced One to one video call

本示例是上一个示例的进阶版，添加了滤镜和录像回放功能

官网文档 Advanced One to one video call

首先从github上获取代码（如果已经获取可以跳过，获取的代码已经包括后面的示例代码了）

 git clone https://github.com/Kurento/kurento-tutorial-java.git

进入目录，编译执行

cd kurento-tutorial-java/kurento-one2one-call-advanced
git checkout 6.6.0
mvn clean compile exec:java

然后在浏览器中打开 https://localhost:8443/，如果是虚拟机安装的话可以在物理机中打开https://<虚拟机IP地址>:8443/ 。浏览器要求支持WebRTC 功能，Chrome, Firefox都是支持的。

双方都注册一个名字，然后其中一方输入另一方的名字开始呼叫，被呼叫的一方确认后就可以开始通话了，通话结束后点击 Play Rec按钮可以观看录像

1. User A is registered in the server with his name

2. User B is registered in the server with her name

3. User A wants to call to User B

4. User B accepts the incoming call

5. The communication is established and media is flowing between User A and User B

6. One of the users finishes the video communication

7. One of the users play the recorded media

另外滤镜显示的卡通图像是允许自定义的，默认的地址是

 https://localhost:8443/img/mario-wings.png

如果需要自己指定，在运行程序的时候加上参数app.server.url ，如

mvn compile exec:java -Dapp.server.url=https://app_server_host:app_server_port