title: how to use ijkplayer library
body: <p>I'm going to use ijkplayer <a href="https://github.com/bbcallen/ijkplayer" rel="noreferrer">github link</a>. I downloaded this and then import it to eclipse by File &gt; Import &gt; General &gt; Existing Projects to Workspace. After that I have three project:</p>
  <pre><code>1.ijkmediaplayer ( library )
  2.ijkmediawidget ( VideoView-like interface )
  3.ijkmediademo   ( Demo project )
  </code></pre>
  <p>When I run ijkmediademo, Error happened and program crashed. I got these lines of error:</p>
  <pre><code>07-06 14:06:26.913: E/AndroidRuntime(11394): FATAL EXCEPTION: main
  07-06 14:06:26.913: E/AndroidRuntime(11394): Process: tv.danmaku.ijk.media.demo, PID: 11394
  07-06 14:06:26.913: E/AndroidRuntime(11394): java.lang.UnsatisfiedLinkError: Couldn't load ijkffmpeg from loader dalvik.system.PathClassLoader[dexPath=/data/app/tv.danmaku.ijk.media.demo-8.apk,libraryPath=/data/app-lib/tv.danmaku.ijk.media.demo-8]: findLibrary returned null
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at java.lang.Runtime.loadLibrary(Runtime.java:358)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at java.lang.System.loadLibrary(System.java:526)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.player.IjkMediaPlayer$1.loadLibrary(IjkMediaPlayer.java:86)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.player.IjkMediaPlayer.loadLibrariesOnce(IjkMediaPlayer.java:95)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.player.IjkMediaPlayer.initPlayer(IjkMediaPlayer.java:137)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.player.IjkMediaPlayer.&lt;init&gt;(IjkMediaPlayer.java:133)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.player.IjkMediaPlayer.&lt;init&gt;(IjkMediaPlayer.java:125)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.widget.VideoView.openVideo(VideoView.java:244)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.widget.VideoView.access$30(VideoView.java:229)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at tv.danmaku.ijk.media.widget.VideoView$8.surfaceCreated(VideoView.java:502)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.SurfaceView.updateWindow(SurfaceView.java:602)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.SurfaceView.access$000(SurfaceView.java:94)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:183)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:888)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2173)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1246)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:6567)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.Choreographer$CallbackRecord.run(Choreographer.java:803)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.Choreographer.doCallbacks(Choreographer.java:603)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.Choreographer.doFrame(Choreographer.java:573)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:789)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.os.Handler.handleCallback(Handler.java:733)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.os.Handler.dispatchMessage(Handler.java:95)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.os.Looper.loop(Looper.java:136)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at android.app.ActivityThread.main(ActivityThread.java:5476)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at java.lang.reflect.Method.invokeNative(Native Method)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at java.lang.reflect.Method.invoke(Method.java:515)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1268)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1084)
  07-06 14:06:26.913: E/AndroidRuntime(11394):    at dalvik.system.NativeStart.main(Native Method)
  </code></pre>
  <p>It's seems that program can't find some libraries that sets here in IjkMediaPlayer class:</p>
  <pre><code>public static void loadLibrariesOnce(IjkLibLoader libLoader) {
      synchronized (IjkMediaPlayer.class) {
          if (!mIsLibLoaded) {
              libLoader.loadLibrary(&quot;stlport_shared&quot;);
              libLoader.loadLibrary(&quot;ijkffmpeg&quot;);
              libLoader.loadLibrary(&quot;ijkutil&quot;);
              libLoader.loadLibrary(&quot;ijkadk&quot;);
              libLoader.loadLibrary(&quot;ijksdl&quot;);
              libLoader.loadLibrary(&quot;ijkplayer&quot;);
              mIsLibLoaded = true;
          }
      }
  }
  </code></pre>
  <p>what are these libraries?</p>
  <p>where are these libraries? ( i could not find them in projects )</p>
  <p>How can solve this issue?</p>