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POandroid media player shows audio but no video
 

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    <p>I am using media player to stream a video. It only plays the audio but not the video. Could anyone help? My code is below.</p> <pre><code>public class VideoViewApplication extends Application { @Override public void onCreate() { } @Override public void onTerminate() { } } public class VideoViewDemo extends Activity implements OnErrorListener,OnBufferingUpdateListener, OnCompletionListener, MediaPlayer.OnPreparedListener, SurfaceHolder.Callback { private static final String TAG = "VideoViewDemo"; private MediaPlayer mp; private EditText mPath; private SurfaceHolder holder; private ImageButton mPlay; private ImageButton mPause; private ImageButton mReset; private ImageButton mStop; private String current; private SurfaceView mPreview; @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); setContentView(R.layout.main); mPreview = (SurfaceView) findViewById(R.id.surface); mPath = (EditText) findViewById(R.id.path); mPath.setText("rtsp://video2.americafree.tv/AFTVHorrorH26496.sdp"); mPlay = (ImageButton) findViewById(R.id.play); mPause = (ImageButton) findViewById(R.id.pause); mReset = (ImageButton) findViewById(R.id.reset); mStop = (ImageButton) findViewById(R.id.stop); mPlay.setOnClickListener(new OnClickListener() { public void onClick(View view) { playVideo(); } }); mPause.setOnClickListener(new OnClickListener() { public void onClick(View view) { if (mp != null) { mp.pause(); } } }); mReset.setOnClickListener(new OnClickListener() { public void onClick(View view) { if (mp != null) { mp.seekTo(0); } } }); mStop.setOnClickListener(new OnClickListener() { public void onClick(View view) { if (mp != null) { current = null; mp.stop(); mp.release(); } } }); // getWindow().setFormat(PixelFormat.TRANSPARENT); holder = mPreview.getHolder(); holder.addCallback(this); holder.setFixedSize(100, 100); runOnUiThread(new Runnable(){ public void run(){ playVideo(); } }); } private void playVideo() { try { final String path = mPath.getText().toString(); Log.v(TAG, "path: " + path); if (path.equals(current) &amp;&amp; mp != null) { mp.start(); return; } current = path; mp = new MediaPlayer(); mp.setOnErrorListener(this); mp.setOnBufferingUpdateListener(this); mp.setOnCompletionListener(this); mp.setOnPreparedListener(this); mp.setAudioStreamType(AudioManager.STREAM_MUSIC); mp.setScreenOnWhilePlaying(true); mp.setDisplay(mPreview.getHolder()); mp.setDataSource(path); mp.prepare(); Log.v(TAG, "Duration: ===&gt;" + mp.getDuration()); mp.start(); } catch (Exception e) { Log.e(TAG, "error: "+ e.getMessage(), e); if (mp != null) { mp.stop(); mp.release(); } } } public void surfaceChanged(SurfaceHolder arg0, int arg1, int arg2, int arg3) { Log.d(TAG, "surfaceChanged called"); } public void surfaceCreated(SurfaceHolder arg0) { Log.d(TAG, "surfaceCreated called"); } public void surfaceDestroyed(SurfaceHolder arg0) { Log.d(TAG, "surfaceDestroyed called"); } public void onPrepared(MediaPlayer arg0) { Log.d(TAG, "onPrepared called"); } public void onCompletion(MediaPlayer arg0) { Log.d(TAG, "onCompletion called"); } public void onBufferingUpdate(MediaPlayer mediaPlayer, int percent) { Log.d(TAG, "onBufferingUpdate called ---&gt; percent:" + percent); } public boolean onError(MediaPlayer mediaPlayer, int what, int extra) { Log.e(TAG, "onError---&gt; what:"+what+" extra:"+extra); if (mediaPlayer != null) { mediaPlayer.stop(); mediaPlayer.release(); } return true; } } &lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" &gt; &lt;EditText android:id="@+id/path" android:layout_width="fill_parent" android:layout_height="wrap_content" /&gt; &lt;SurfaceView android:id="@+id/surface" android:layout_width="fill_parent" android:layout_height="fill_parent"&gt; &lt;/SurfaceView&gt; &lt;LinearLayout android:orientation="horizontal" android:layout_height="wrap_content" android:layout_width="fill_parent" &gt; &lt;ImageButton android:id="@+id/play" android:layout_height="wrap_content" android:layout_width="wrap_content" android:src="@drawable/play"/&gt; &lt;ImageButton android:id="@+id/pause" android:layout_height="wrap_content" android:layout_width="wrap_content" android:src="@drawable/pause"/&gt; &lt;ImageButton android:id="@+id/reset" android:layout_height="wrap_content" android:layout_width="wrap_content" android:src="@drawable/reset"/&gt; &lt;ImageButton android:id="@+id/stop" android:layout_height="wrap_content" android:layout_width="wrap_content" android:src="@drawable/stop"/&gt; &lt;/LinearLayout&gt; &lt;/LinearLayout&gt; </code></pre>
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    1. COIf you are trying to run this on the emulator, this is normal behavior. The emulator cannot render video on most development machines. For testing video apps, you really need a device.
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      1. USCommonsWare
    2. COI am running it on a samsung galaxy tab. I suspect that is related to the layout xml and the holder size.
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    3. COSometimes this happens if the device can't quite handle that video's encoding details. As a test, take a short piece of the subject video, load it onto the device, and play it with the stock player.
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      1. POandroid media player shows audio but no video
      1. USChris Stratton
 

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