[Stagefright] Buffering problem while reading an h264 video (using HTTP protocol)

Question

Hi,

I'm developping an application on Android 2.2. This application have to read some h264 videos using HTTP protocol.

To read a video, I'm using following methods :

// INIT PART
mMediaPlayer = new MediaPlayer();
mMediaPlayer.reset();
mMediaPlayer.setOnErrorListener(this);
mMediaPlayer.setOnBufferingUpdateListener(this);
mMediaPlayer.setOnCompletionListener(this);
mMediaPlayer.setOnPreparedListener(this);
mMediaPlayer.setOnSeekCompleteListener(this);
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);


// SET DATASOURCE
mMediaPlayer.reset();
mMediaPlayer.setDataSource(url);
mMediaPlayer.prepareAsync();

In prepareAsync callback :

public void onPrepared(MediaPlayer mediaplayer) {
     mMediaPlayer.start();
}

But, i'm logging current buffering percent in OnBufferingUpdateListener callback ... it's always 0. Sometimes, a same video can work, or not. I don't understand the problem ...

Can I have some help ? What is wrong ?

Thanks,

Corentin Guy