JNative
使用了一下JNative，调用MediaInfo.dll的动态链接库。MediaInfo提供的源码中很多的Example
其中有各类就是Mediainfo提供给用户用JNative调用的类，把它拷到项目下就行了叫做MediaInfoDLL.JNative.java
还有一个是交给我们怎么使用上面那个类的，做的真是周到，叫HowToUseDLL.jNative.java
可以通过这个来学习。
MediaInfo mi = new MediaInfo();mi.Open(sourceFilePath);mi.Option("Complete", "0");format = mi.Get(MediaInfo.Stream_General, 0, "Format", MediaInfo.Info_Text, MediaInfo.Info_Name);filesize = mi.Get(MediaInfo.Stream_General, 0, "FileSize", MediaInfo.Info_Text, MediaInfo.Info_Name);duration1 = mi.Get(MediaInfo.Stream_General, 0, "Duration", MediaInfo.Info_Text, MediaInfo.Info_Name);videoFormat = mi.Get(MediaInfo.Stream_Video, 0, "Format", MediaInfo.Info_Text, MediaInfo.Info_Name);videoWidth = mi.Get(MediaInfo.Stream_Video, 0, "Width", MediaInfo.Info_Text, MediaInfo.Info_Name);videoHeight = mi.Get(MediaInfo.Stream_Video, 0, "Height", MediaInfo.Info_Text, MediaInfo.Info_Name);videoFrameRate = mi.Get(MediaInfo.Stream_Video, 0, "FrameRate", MediaInfo.Info_Text, MediaInfo.Info_Name);audioFormat = mi.Get(MediaInfo.Stream_Audio, 0, "Format", MediaInfo.Info_Text, MediaInfo.Info_Name);audioBitRate = mi.Get(MediaInfo.Stream_Audio, 0, "BitRate", MediaInfo.Info_Text, MediaInfo.Info_Name); 上面的代码可以得到视频的General,Video,Audio的信息，比如大小，时长，帧率，码率，高宽等等。
对于其中的参数"Format"等，可以用一下代码获得，其实是在HowToUseDLL.jNative.java这个文件中的，叫做Info_Parameters。
String File_Name = "C:\\v\\content\\uploads\\admin\\shenqi.wmv"; if (args.length > 0) File_Name = args; String To_Display = ""; //Info about the library // To_Display += MediaInfo.Option_Static("Info_Version"); To_Display += "\r\n\r\nInfo_Parameters\r\n"; To_Display += MediaInfo.Option_Static("Info_Parameters"); //To_Display += "\r\n\r\nInfo_Capacities\r\n"; //To_Display += MediaInfo.Option_Static("Info_Capacities"); // To_Display += "\r\n\r\nInfo_Codecs\r\n"; //To_Display += MediaInfo.Option_Static("Info_Codecs"); //An example of how to use the library MediaInfo MI = new MediaInfo(); To_Display += "\r\n\r\nOpen\r\n"; if (MI.Open(File_Name)>0) To_Display+="is OK\r\n"; else To_Display+="has a problem\r\n"; To_Display += "\r\n\r\nInform with Complete=false\r\n"; MI.Option("Complete", "1"); To_Display += MI.Inform(); System.out.println(To_Display); 我这个是在windows上的，MediaInfo.dll和JNativeCpp.dll文件放在了system32下面，不知道怎么能用在linux下，持续更新中....
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