Video is not playing after save
<pre><code> MediaRecorder m_recorder = new MediaRecorder();
    m_recorder.setPreviewDisplay(s);
    m_recorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
    m_recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
    m_recorder.setOutputFormat(MediaRecorder.OutputFormat.THREE_GPP);
    m_recorder.setAudioEncoder(MediaRecorder.AudioEncoder.DEFAULT);
    m_recorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
    m_recorder.setMaxDuration(20000); // length of video in MS
    m_recorder.setVideoSize(320, 240);
    m_recorder.setVideoFrameRate(15);
    m_recorder.setOutputFile(video.getPath());
    m_recorder.prepare();
</code></pre>

<p>mp4 file save on sdcard but this file is not playing .</p>
