在 android 上播放本地 m3u8 文件，显示 setDataSourceFD 失败。：状态 = 0x80000000

Question

我正在尝试使用 android mediaplayer 类播放存储在我的 sdcard 中的本地 m3u8 文件。m3u8 文件和 .ts 文件位于同一目录中。当我从中打开 m3u8 时，像 MXPlayer 这样的第三方播放器会加入 ts 文件并播放视频。但是使用android mediaplayer类会抛出以下错误`

无法创建媒体播放器 错误：setDataSourceFD 失败。：状态=0x80000000 java.io.IOException：setDataSourceFD 失败。：状态=0x80000000 在 android.media.MediaPlayer.setDataSource（本机方法） 在 android.media.MediaPlayer.setDataSource(MediaPlayer.java:1204) 在 com.tcs.hlsvideo.StreamingPlayer.playVideo(StreamingPlayer.java:87) 在 com.tcs.hlsvideo.StreamingPlayer.surfaceCreated（StreamingPlayer.java:148） 在 android.view.SurfaceView.updateWindow(SurfaceView.java:609) 在 android.view.SurfaceView.access$000(SurfaceView.java:86) 在 android.view.SurfaceView$3.onPreDraw(SurfaceView.java:178) 在 android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:707) 在 android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1981) 在 android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1143) 在 android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4667) 在 android.view.Choreographer$CallbackRecord.run(Choreographer.java:725) 在 android.view.Choreographer.doCallbacks(Choreographer.java:555) 在 android.view.Choreographer.doFrame(Choreographer.java:525) 在 android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711) 在 android.os.Handler.handleCallback(Handler.java:615) 在 android.os.Handler.dispatchMessage(Handler.java:92) 在 android.os.Looper.loop(Looper.java:137) 在 android.app.ActivityThread.main(ActivityThread.java:4960) 在 java.lang.reflect.Method.invokeNative(Native Method) 在 java.lang.reflect.Method.invoke(Method.java:511) 在 com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1038) 在 com.android.internal.os.ZygoteInit.main(ZygoteInit.java:805) 在 dalvik.system.NativeStart.main（本机方法） setDataSourceFD 失败。：状态=0x80000000

我使用的代码是

private static final String TAG = StreamingPlayer.class.getSimpleName();

private String formatedIpAddress;

private int mVideoWidth;
private int mVideoHeight;
private MediaPlayer mMediaPlayer;
private SurfaceView mPreview;
private SurfaceHolder holder;
private String path;

//private boolean mIsVideoSizeKnown = false;
private boolean mIsVideoReadyToBePlayed = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    mPreview = new SurfaceView(this);
    holder = mPreview.getHolder();
    holder.addCallback(this);
    setContentView(mPreview);

    WifiManager wifiManager = (WifiManager) getSystemService(WIFI_SERVICE);
    int ipAddress = wifiManager.getConnectionInfo().getIpAddress();
    formatedIpAddress = String.format("%d.%d.%d.%d", (ipAddress & 0xff),
            (ipAddress >> 8 & 0xff), (ipAddress >> 16 & 0xff), (ipAddress >> 24 & 0xff));

    Log.d(TAG, formatedIpAddress);

}

private void playVideo() {
    doCleanUp();
    try {

        //local m3u8 file
        path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/ts/prog_index.m3u8";

        if (path == "") {
            // Tell the user to provide a media file URL.
            Toast
            .makeText(
                    this,
                    "Please edit MediaPlayerDemo_Video Activity,"
                            + " and set the path variable to your media file URL.",
                            Toast.LENGTH_LONG).show();
        } 

        Log.e("PATH", "Path = " + path);
        // Create a new media player and set the listeners
        mMediaPlayer = new MediaPlayer();
        //mMediaPlayer.SET
        mMediaPlayer.setDataSource(path);
        mMediaPlayer.setDisplay(holder);
        mMediaPlayer.setOnBufferingUpdateListener(this);
        mMediaPlayer.setOnPreparedListener(this);
        mMediaPlayer.prepare();
        mMediaPlayer.setOnCompletionListener(this);
        mMediaPlayer.setOnVideoSizeChangedListener(this);
        mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);

    } catch (Exception e) {
        Log.e(TAG, "error: " + e.getMessage(), e);
        Log.e(TAG, e.getMessage());
    }
}

public void onBufferingUpdate(MediaPlayer arg0, int percent) {
    Log.d(TAG, "onBufferingUpdate percent:" + percent);

}

public void onCompletion(MediaPlayer arg0) {
    Log.d(TAG, "onCompletion called");
}

public void onVideoSizeChanged(MediaPlayer mp, int width, int height) {
    Log.v(TAG, "onVideoSizeChanged called");
    if (width == 0 || height == 0) {
        Log.e(TAG, "invalid video width(" + width + ") or height(" + height + ")");
        return;
    }
    //mIsVideoSizeKnown = true;
    mVideoWidth = width;
    mVideoHeight = height;
    //&& mIsVideoSizeKnown
    if (mIsVideoReadyToBePlayed ) {
        startVideoPlayback();
    }
}

public void onPrepared(MediaPlayer mediaplayer) {
    Log.d(TAG, "onPrepared called");
    mIsVideoReadyToBePlayed = true;
    //&& mIsVideoSizeKnown
    if (mIsVideoReadyToBePlayed ) {
        startVideoPlayback();
    }
}

public void surfaceChanged(SurfaceHolder surfaceholder, int i, int j, int k) {
    Log.d(TAG, "surfaceChanged called");

}

public void surfaceDestroyed(SurfaceHolder surfaceholder) {
    Log.d(TAG, "surfaceDestroyed called");
}


public void surfaceCreated(SurfaceHolder holder) {
    Log.d(TAG, "surfaceCreated called");
    playVideo();

}

@Override
protected void onPause() {
    super.onPause();
    releaseMediaPlayer();
    doCleanUp();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    releaseMediaPlayer();
    doCleanUp();

}

private void releaseMediaPlayer() {
    if (mMediaPlayer != null) {
        mMediaPlayer.release();
        mMediaPlayer = null;
    }
}

private void doCleanUp() {
    mVideoWidth = 0;
    mVideoHeight = 0;
    mIsVideoReadyToBePlayed = false;
    //mIsVideoSizeKnown = false;
}

private void startVideoPlayback() {
    Log.v(TAG, "startVideoPlayback");
    holder.setFixedSize(mVideoWidth, mVideoHeight);
    mMediaPlayer.start();
}

帮帮我，伙计们... `

Answer 1

我不确定，但看起来 M3U8 文件不是媒体文件。它是一种播放列表文件格式。这意味着您必须解析它，从中获取媒体文件的路径并播放您获得的文件之一。

这里是格式的简短描述http://www.gravlab.com/2013/07/05/what-is-an-m3u8-file/。

要了解如何解析它，请查看以下答案：Parsing HLS m3u8 file using regular expressions