7

好的，这有点令人沮丧，我搜索了 Stack 但似乎没有一个答案有帮助。

我有一个 Android 应用程序，它在屏幕上循环显示不同的内容。有一次它会播放一个视频，同一个视频，从同一个地方加载。

在随机播放数次后，它决定停止播放视频文件并在上面抛出错误（-2147483648），这是一个通用文件未找到/格式不正确的错误。

问题是在出现此错误之前，视频多次正确播放。我尝试了多种解决方法：

  • 播放文件的 VideoView（开始）
  • 从文件读取的 MediaPlayer + SurfaceView 组合
  • MediaPlayer + SurfaceView 从文件描述符中读取
  • 强制权限为世界可读
  • 将文件复制到临时文件并播放
  • 为 VideoView 和 MediaPlayer 选项手动释放媒体播放器
  • 每次播放后运行手动垃圾收集

然而，经过多次播放后，它最终还是会拒绝播放视频。

一个可能相关或不相关的更改是，当从文件描述符播放时，它会引发媒体播放器准备 Java I/O 异常，我认为这可能与文件上发生某种锁定有关。

解决此问题的唯一方法是重新启动设备。重新启动应用程序并不能修复它，它会立即拒绝播放文件。

下面是 VideoView 播放代码：

// from main activity
File afile = new File(btvapp.fileroot,btvapp.getDailyVideo().get("FILENAME"));        
afile.setReadable(true, false);
theVideo = (VideoView) findViewById(R.id.videoViewer);
theVideo.requestFocus();
theVideo.setVideoPath(afile.getPath());
theVideo.setOnPreparedListener(this);
theVideo.setOnCompletionListener(new MediaPlayer.OnCompletionListener() {
    @Override
    public void onCompletion(MediaPlayer mp) {
        // TODO Auto-generated method stub
        //mp.release();
        theVideo.stopPlayback();
        mp.release();
            finish();

    }
} );
theVideo.setOnErrorListener(new MediaPlayer.OnErrorListener() {
    @Override
    public boolean onError(MediaPlayer mp, int what, int extra) {
            finish();
            return false;
        }
    });

// play on prepared function
@Override
  public void onPrepared(MediaPlayer mp) {
  // TODO Auto-generated method stub
  mp.start();
}

表面视图几乎完全使用 Android SDK 媒体播放示例，但我认为不值得粘贴代码，因为无论您使用 mediaplayer + surfaceview 方法还是 VideoView 播放方法都会发生错误。

想法？快把我逼疯了。

更新：这是完整的日志，包括主应用程序和生成的视频活动

07-19 18:47:02.844: V/videpath(7232): /mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4
07-19 18:47:03.014: I/dalvikvm(7232): threadid=1: recursive native library load attempt (/system/lib/libmedia_jni.so)
07-19 18:47:03.014: D/MtpDeviceJNI(7232): register_android_mtp_MtpDevice
07-19 18:47:03.014: I/dalvikvm(7232): threadid=1: recursive native library load attempt (/system/lib/libmedia_jni.so)
07-19 18:47:03.014: I/dalvikvm(7232): threadid=1: recursive native library load attempt (/system/lib/libmedia_jni.so)
07-19 18:47:03.024: V/MediaPlayerService(87): Client(56) constructor
07-19 18:47:03.024: V/MediaPlayerService(87): Create new client(56) from pid 7232, uid 10043, 
07-19 18:47:03.034: V/MediaPlayerService(87): setDataSource(/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4)
07-19 18:47:03.034: V/MediaPlayerService(87): media.amsuperplayer.enable is enabled
07-19 18:47:03.034: V/MediaPlayerService(87): media.amsuperplayer.enable is enabled
07-19 18:47:03.034: V/MediaPlayerService(87): player type = 6
07-19 18:47:03.034: V/MediaPlayerService(87): Create AmSuperPlayer
07-19 18:47:03.034: V/AmSuperPlayer(87): [AmSuperPlayer::74]
07-19 18:47:03.034: V/AmSuperPlayer(87): [AmSuperPlayer::76]
07-19 18:47:03.034: V/AmSuperPlayer(87): AmSuperPlayer init now
07-19 18:47:03.034: V/AmSuperPlayer(87): [onFirstRef::103]
07-19 18:47:03.034: V/AmSuperPlayer(87): [initCheck::110]
07-19 18:47:03.034: V/AmSuperPlayer(87): [initCheck::112]
07-19 18:47:03.034: V/AmSuperPlayer(87): [setNotifyCallback::455]
07-19 18:47:03.034: V/AmSuperPlayer(87): [hardwareOutput::330]
07-19 18:47:03.034: V/AmSuperPlayer(87): [hardwareOutput::332]
07-19 18:47:03.034: V/AudioSink(87): AudioOutput(112)
07-19 18:47:03.034: V/MediaPlayerService(87):  setDataSource
07-19 18:47:03.034: V/AmSuperPlayer(87): [setDataSource::118]
07-19 18:47:03.034: V/AmSuperPlayer(87): [setDataSource::120]
07-19 18:47:03.034: V/MediaPlayerService(87): [56] setVideoSurfaceTexture(0x28290)
07-19 18:47:03.034: V/AmSuperPlayer(87): [setVideoSurfaceTexture::168]
07-19 18:47:03.034: V/AmSuperPlayer(87): [setVideoSurfaceTexture::170]
07-19 18:47:03.034: V/MediaPlayerService(87): [56] setVideoSurfaceTexture(0x29660)
07-19 18:47:03.034: V/MediaPlayerService(87): [56] setAudioStreamType(3)
07-19 18:47:03.034: V/MediaPlayerService(87): [56] prepareAsync
07-19 18:47:03.034: V/AmSuperPlayer(87): [prepareAsync::199]
07-19 18:47:03.034: V/AmSuperPlayer(87): [prepareAsync::202]
07-19 18:47:03.034: V/AmSuperPlayer(87): initThread(7388) started
07-19 18:47:03.034: V/AmSuperPlayer(87): createPlayer
07-19 18:47:03.034: V/AmSuperPlayer(87): Create Amlogic Player
07-19 18:47:03.034: V/AmlogicPlayer(87): AmlogicPlayer constructor
07-19 18:47:03.034: I/AmlogicPlayer(87): media.amplayer.stopbuflevel is not set
07-19 18:47:03.034: V/AmlogicPlayer(87): onFirstRef
07-19 18:47:03.034: I/AmlogicPlayer(87): found 0 not exit player threads,try exit it now
07-19 18:47:03.034: V/AmlogicPlayer(87): initCheck
07-19 18:47:03.034: V/AmSuperPlayer(87): [CreatePlayer::678]
07-19 18:47:03.034: V/AmlogicPlayer(87): setDataSource
07-19 18:47:03.034: V/AmlogicPlayer(87): History mgt old[,0,-1]
07-19 18:47:03.034: V/AmlogicPlayer(87): History mgt    [/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4,0,0]
07-19 18:47:03.034: V/AmlogicPlayer(87): setDataSource url=/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4, len=63
07-19 18:47:03.034: V/AmlogicPlayer(87): Set setVideoSurfaceTexture
07-19 18:47:03.034: I/AmlogicPlayer(87): media.amplayer.lpbufferlevel is not set
07-19 18:47:03.034: I/AmlogicPlayer(87): media.amplayer.buffertime is not set
07-19 18:47:03.034: V/AmlogicPlayer(87): prepareAsync
07-19 18:47:03.034: I/AmlogicPlayer(87): media.amplayer.noaudio is disabled
07-19 18:47:03.034: I/AmlogicPlayer(87): media.amplayer.novideo is disabled
07-19 18:47:03.034: V/AmlogicPlayer(87): buffer level setting is:0.001000-0.020000-0.800000
07-19 18:47:03.034: V/AmlogicPlayer(87): prepareAsync,file_name=/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4
07-19 18:47:03.034: I/amplayer(87): LibPlayer version:Version:2.1.0.
07-19 18:47:03.034: I/amplayer(87): LibPlayer git version:
07-19 18:47:03.034: I/amplayer(87): LibPlayer version serial:201000000000000
07-19 18:47:03.034: I/amplayer(87): LibPlayer Last Changed:
07-19 18:47:03.034: I/amplayer(87): LibPlayer Last Build: Tue May 22 17:40:26 HKT 2012
07-19 18:47:03.034: I/amplayer(87): LibPlayer Builer Name: clei
07-19 18:47:03.034: I/amplayer(87): [player_start:enter]p=0x2a98dc black=0
07-19 18:47:03.034: I/amplayer(87): ***player_para=0x112d28,start_param=0x2a98dc
07-19 18:47:03.034: I/amplayer(87): [player_thread_create:70]creat thread success,tid=149280
07-19 18:47:03.034: I/amplayer(87): [player_start:exit]pid = 23 
07-19 18:47:03.034: V/AmlogicPlayer(87): Start player,pid=23
07-19 18:47:03.034: I/amplayer(87): pid[23]::enter into player_thread
07-19 18:47:03.034: I/amplayer(87): pid[23]::Init State: mute_on=0 black=0 t_pos:1074106323s read_max_cnt=0
07-19 18:47:03.034: I/amplayer(87): file::::[/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4],len=63
07-19 18:47:03.154: I/amplayer(87): **[update_state]pid:23 status=BEGIN_INIT(last:UNKNOW_STATE) err=0x0 curtime=0 (ms:0) fulltime=0 lsttime=0
07-19 18:47:03.154: I/amplayer(87): **[update_state]abuflevel=0.000 vbublevel=0.000 abufrp=0 vbufrp=0 read_end=0
07-19 18:47:03.154: V/AmlogicPlayer(87): update_process pid=23, current=0,status=[BEGIN_INIT]
07-19 18:47:03.154: V/AmlogicPlayer(87): Playing percent =0,mPlayTime:0,mStreamTime:0
07-19 18:47:03.154: V/AmSuperPlayer(87): [notify::404]
07-19 18:47:03.154: V/AmSuperPlayer(87): [Notify::411]
07-19 18:47:03.154: V/AmSuperPlayer(87): cookie=0x475e0,msg=3,ext1=0,ext2=0
07-19 18:47:03.154: I/amplayer(87): [ffmpeg_open_file] file=/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4,header=
07-19 18:47:03.154: I/amplayer(87): ffmpeg error: Couldn't open input file! ret==ffffffe8
07-19 18:47:03.154: I/amplayer(87): [player_dec_init]ffmpeg_open_file failed(/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4)*****ret=fcffffff!
07-19 18:47:03.154: I/amplayer(87): pid[23]player_thread release0 begin...(sta:0x30001)
07-19 18:47:03.154: I/amplayer(87): [get_pts_video]No codec handler
07-19 18:47:03.154: I/amplayer(87): **[update_state]pid:23 status=ERROR(last:BEGIN_INIT) err=0x3000001 curtime=0 (ms:0) fulltime=0 lsttime=0
07-19 18:47:03.154: I/amplayer(87): **[update_state]abuflevel=0.000 vbublevel=0.000 abufrp=0 vbufrp=0 read_end=0
07-19 18:47:03.154: V/AmlogicPlayer(87): update_process pid=23, current=0,status=[ERROR]
07-19 18:47:03.154: V/AmSuperPlayer(87): [notify::404]
07-19 18:47:03.154: V/AmSuperPlayer(87): [Notify::411]
07-19 18:47:03.154: V/AmSuperPlayer(87): cookie=0x475e0,msg=64,ext1=1,ext2=fcffffff
07-19 18:47:03.154: V/AmSuperPlayer(87): [CreatePlayer::702]
07-19 18:47:03.154: I/AmSuperPlayer(87): media.amplayer.enable is enabled
07-19 18:47:03.154: I/AmSuperPlayer(87): media.stagefright.enable-player is disabled
07-19 18:47:03.154: V/AmSuperPlayer(87): [CreatePlayer::713]
07-19 18:47:03.154: V/AmSuperPlayer(87): Need to creat new player=3
07-19 18:47:03.154: V/AmlogicPlayer(87): stop
07-19 18:47:03.154: I/amplayer(87): [player_stop:enter]pid=23
07-19 18:47:03.154: I/amplayer(87): [player_stop]player_status=30001
07-19 18:47:03.154: I/amplayer(87): [player_stop]pid=23 thread is already stopped
07-19 18:47:03.154: V/AmlogicPlayer(87): AmlogicPlayer destructor
07-19 18:47:03.154: V/AmlogicPlayer(87): release
07-19 18:47:03.154: V/AmlogicPlayer(87): [release::1461]
07-19 18:47:03.154: I/amplayer(87): [player_stop:enter]pid=23
07-19 18:47:03.154: I/amplayer(87): [player_stop]player_status=30001
07-19 18:47:03.154: I/amplayer(87): [player_stop]pid=23 thread is already stopped
07-19 18:47:03.154: I/amplayer(87): [player_exit:enter]pid=23
07-19 18:47:03.154: I/amplayer(87): [player_exit]player_state=0x30001
07-19 18:47:03.154: I/amplayer(87): [player_stop:enter]pid=23
07-19 18:47:03.154: I/amplayer(87): [player_stop]player_status=30001
07-19 18:47:03.154: I/amplayer(87): [player_stop]pid=23 thread is already stopped
07-19 18:47:03.154: I/amplayer(87): [player_thread_wait_exit:80]pid=[23] thead_id=149280
07-19 18:47:03.154: V/AmlogicPlayer(87): Player status:ERROR, error occur
07-19 18:47:03.154: V/AmSuperPlayer(87): [notify::404]
07-19 18:47:03.154: V/AmSuperPlayer(87): [Notify::411]
07-19 18:47:03.154: V/AmSuperPlayer(87): cookie=0x475e0,msg=64,ext1=1,ext2=ffffffff
07-19 18:47:03.154: I/amplayer(87): **[update_state]pid:23 status=EXIT(last:ERROR) err=0x0 curtime=0 (ms:0) fulltime=0 lsttime=0
07-19 18:47:03.154: I/amplayer(87): **[update_state]abuflevel=0.000 vbublevel=0.000 abufrp=0 vbufrp=0 read_end=0
07-19 18:47:03.154: V/AmlogicPlayer(87): update_process pid=23, current=0,status=[EXIT]
07-19 18:47:03.154: V/AmlogicPlayer(87): Player status:EXIT, playback exit
07-19 18:47:03.154: I/amplayer(87): pid[23]::stop play, exit player thead!(sta:0x30004)
07-19 18:47:03.154: I/amplayer(87): [player_thread_wait_exit:86]thead_id=149280 returning
07-19 18:47:03.154: I/amplayer(87): [player_exit]player thread already exit: 0
07-19 18:47:03.154: I/amplayer(87): [player_release_pid:72]release pid=23
07-19 18:47:03.154: I/amplayer(87): [player_exit:exit]pid=23
07-19 18:47:03.154: V/AmlogicPlayer(87): set fs/sys/class/video/disable_video=2 failed
07-19 18:47:03.154: I/amplayer(87): ENABLE_FREE_SCALE not define!
07-19 18:47:03.154: I/amplayer(87): [get_display_mode]display_mode=fail
07-19 18:47:03.154: I/amplayer(87): open /sys/class/graphics/fb0/scale fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/graphics/fb1/scale fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/graphics/fb1/scale_axis fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/graphics/fb0/blank fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/graphics/fb1/blank fail.
07-19 18:47:03.154: I/amplayer(87): [get_display_mode]display_mode=fail
07-19 18:47:03.154: I/amplayer(87): open /sys/class/graphics/fb0/free_scale fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/graphics/fb1/free_scale fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/video/axis fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/ppmgr/ppscaler fail.
07-19 18:47:03.154: I/amplayer(87): open /sys/class/ppmgr/ppscaler_rect fail.
07-19 18:47:03.154: I/amplayer(87): display mode: 292344
07-19 18:47:03.154: I/amplayer(87): [enable_freescale_MBX]set video axis: 0 0 0 0 
07-19 18:47:03.154: V/AmlogicPlayer(87): VideoViewClose=-33554433
07-19 18:47:03.154: V/AmlogicPlayer(87): [release::1471]
07-19 18:47:03.154: V/AmlogicPlayer(87): History mgt old[,0,-1]
07-19 18:47:03.154: V/AmlogicPlayer(87): History mgt    [/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4,1,0]
07-19 18:47:03.154: V/AmSuperPlayer(87): createPlayer
07-19 18:47:03.154: V/AmSuperPlayer(87):  create StagefrightPlayer
07-19 18:47:03.154: V/AmSuperPlayer(87): [CreatePlayer::678]
07-19 18:47:03.154: I/AwesomePlayer(87): setDataSource_l('/mnt/sdcard/Android/data/au.com.nian.bullertv/files/tmpbtag.mp4')
07-19 18:47:03.154: V/AmSuperPlayer(87): [CreatePlayer::713]
07-19 18:47:03.154: V/AmSuperPlayer(87): [CreatePlayer::729]
07-19 18:47:03.154: V/AmSuperPlayer(87): Start new player now=3
07-19 18:47:03.154: V/AmSuperPlayer(87): [initThread::762]
07-19 18:47:03.154: V/AmSuperPlayer(87): [notify::404]
07-19 18:47:03.154: V/AmSuperPlayer(87): [Notify::411]
07-19 18:47:03.154: V/AmSuperPlayer(87): cookie=0x475e0,msg=64,ext1=1,ext2=80000000
07-19 18:47:03.154: V/MediaPlayerService(87): [56] notify (0x23d50, 100, 1, -2147483648)
07-19 18:47:03.154: **E/MediaPlayer(7232): error (1, -2147483648)**
07-19 18:47:03.154: V/videoerr(7232): java.io.IOException: Prepare failed.: status=0x1

更新 2： 我已经在其他 2 台 Android 设备（一台 ICS，一台 Gingerbread）上测试了代码，令人讨厌的是，它在它们上运行良好，并且运行了 12 多个小时而没有发生任何事故。所以，它看起来是一个平台错误，但仍然需要解决这个问题。

4

3 回答 3

1

我几乎肯定这是您正在使用的基于 Amlogic 的设备的问题（由于 logcat 中的“amplayer”和“AmlogicPlayer”很明显）。我们正在测试的基于 Amlogic AML8726 的设备存在大量问题。如果可能，请尝试升级固件。

于 2012-08-23T21:14:15.747 回答
0

我不确定但我认为这是由于一些缓存问题，因为它播放了 x 次然后停止播放。文件无法访问，可能有多种原因：权限、文件损坏、文件错误，但您的情况似乎不同。

你能用reset再试一次吗

public void reset () 自：API Level 1

将 MediaPlayer 重置为未初始化状态。调用此方法后，您将不得不通过设置数据源并调用 prepare() 再次对其进行初始化。

于 2012-07-19T09:16:29.600 回答
0

好吧，我从来没有解决这个问题让我非常满意，特别是因为它是特定于设备的。最后，我只是添加了异常处理，因此在播放视频失败时它不会崩溃，只需跳过它，下次再试一次。

下次视频确实会循环播放，所以我猜它是特定于设备的。

于 2012-08-08T15:18:36.723 回答