无法通过适用于 Android 11 的 Mediastore API 录制超过 2 分钟的视频

如何解决无法通过适用于 Android 11 的 Mediastore API 录制超过 2 分钟的视频

我正在尝试使用适用于 Android 11 的媒体商店 API 的 ScreenRecording 应用程序。

我的问题是，我只能录制 2 分钟以下的屏幕录像。如果屏幕录制超过 2 分钟，则文件已创建，但只有在单击时才为 Kbs 大小，显示“无法播放此视频” 但如果我记录的时间低于 2 分钟，它就可以正常工作。

在 Manifest 中，根据 Google 指南，我没有对 Android 11 使用 WRITE_EXTERNAL_STORAGE 和 requestLegacyExternalStorage 权限

如果我错过了任何步骤，请帮助我。提前致谢！

我在下面通过代码分享，

初始化记录器：

private void recordScreen()
{
    if(mediaProjection == null)
    {
        if(mediaProjectionManager!=null)
        {
            Intent permissionIntent = mediaProjectionManager.createScreenCaptureIntent();
            startActivityForResult(permissionIntent,REQUEST_CODE);
        }
        return;
    }
    initRecorder();       
    virtualDisplay = createVirtualDisplay();
    mediaRecorder.start();
    
}
@Override
protected void onActivityResult(int requestCode,int resultCode,android.content.Intent intent){
    super.onActivityResult(requestCode,resultCode,intent);

    destroyMediaProjection();
    if(intent!=null)
    {
        createMediaProjection(resultCode,intent);
    }
}
public void createMediaProjection(final int resultCode,final android.content.Intent data)
{
    destroyMediaProjection();
    mediaProjectionCallBack = new MediaProjectionCallBack();
    long delay = 0;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O)
    {
        foreGroundServiceIntent = new Intent(this,StartForegroundService.class);
        System.out.println("calling ContextCompat.startForegroundService(this,intent)");
        ContextCompat.startForegroundService(getApplicationContext(),foreGroundServiceIntent);
        delay = 1000;
    }
    final Handler handler = new Handler();
    handler.postDelayed(new Runnable() {
        @Override
        public void run() {
            //Write whatever to want to do after delay specified (1 sec)
            mediaProjection = mediaProjectionManager.getMediaProjection(resultCode,data);
            mediaProjection.registerCallback(mediaProjectionCallBack,null);
            System.out.println("======createMediaProjection=========11111");
            recordScreen();
        }
    },delay);

}

private VirtualDisplay createVirtualDisplay()
{
    return mediaProjection.createVirtualDisplay("Test",DISPLAY_WIDTH,DISPLAY_HEIGHT,mscreendenstity,DisplayManager.VIRTUAL_DISPLAY_FLAG_AUTO_MIRROR,mediaRecorder.getSurface(),null,null);
}

private class MediaProjectionCallBack extends MediaProjection.Callback
{
    @Override
    public void onStop()
    {
        System.out.println("MediaProjectionCallBack onStop() called");
        stopRecordScreen();
        super.onStop();
    }
}
private void initRecorder()
{
        if(mediaRecorder!=null)
        {
            mediaRecorder.release();
            mediaRecorder = null;
        }

        mediaRecorder = new MediaRecorder();
        mediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);    
        mediaRecorder.setVideoSource(MediaRecorder.VideoSource.SURFACE);
        mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);

        String fileName = new StringBuilder("Recor_").append(new SimpleDateFormat("dd-mm-yyyy-hh_mm_ss").format(new java.util.Date())).append(".mp4").toString();   
        android.content.ContentValues values = new android.content.ContentValues(5);
        values.put(MediaStore.Video.Media.DISPLAY_NAME,fileName);
        values.put(MediaStore.Video.Media.TITLE,fileName);
        values.put(MediaStore.Video.Media.MIME_TYPE,"video/mp4");
        values.put(MediaStore.Video.Media.RELATIVE_PATH,Environment.DIRECTORY_MOVIES  + "/Test");
        ContentResolver resolver = getBaseContext().getContentResolver();
        Uri FinalvideoUri = resolver.insert(MediaStore.Video.Media.EXTERNAL_CONTENT_URI,values);
        sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,FinalvideoUri));
      
        File file = new File(FinalvideoUri.getPath());
        videoUrl = getRealPathFromURI(this.getApplicationContext(),FinalvideoUri);
        ParcelFileDescriptor file1   = this.getApplicationContext().getContentResolver().openFileDescriptor(FinalvideoUri,"w");
        mediaRecorder.setOutputFile(file1.getFileDescriptor());        

        mediaRecorder.setVideoSize(DISPLAY_WIDTH,DISPLAY_HEIGHT);
        mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
        mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
        mediaRecorder.setVideoEncodingBitRate(512 * 10000);
        mediaRecorder.setVideoFrameRate(30);
        int rotation = getWindowManager().getDefaultDisplay().getRotation();
        int orientation = ORIENTATIONS.get(rotation + 90);
        mediaRecorder.setOrientationHint(orientation);
        mediaRecorder.prepare();

}

停止录制：

 private void stopRecordScreen()
{
    if(mediaRecorder!=null)
    {
        mediaRecorder.release();
        mediaRecorder = null;
        System.out.println("mediaRecorder released and assigned as null");
    }
    destroyMediaProjection();
    stopTheForeGroundService();
    if(virtualDisplay == null){
        return;
    }
    virtualDisplay.release();
    virtualDisplay = null;
    sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,videoUri));
}
private void destroyMediaProjection()
{
    if(mediaProjection != null)
    {
        mediaProjection.unregisterCallback(mediaProjectionCallBack);
        mediaProjection.stop();
        mediaProjection = null;
        System.out.println("mediaProjection stopped and assigned as null");
    }
}
private Intent foreGroundServiceIntent;
private void stopTheForeGroundService()
{
    final Handler handler = new Handler();
    handler.postDelayed((new Runnable() {
        @Override
        public void run()
        {

            if(foreGroundServiceIntent!=null)
            {
                System.out.println("stopTheForeGroundService called");
                stopService(foreGroundServiceIntent);
                foreGroundServiceIntent = null;

                if(StartForegroundService.instance!=null)
                {
                    StartForegroundService.instance.stopForegroundService();
                }
            }
        }
    }),1000);
}

解决方法

您好 Nijanthan 我回答了 MediaStore 的改进回答MediaStore.Images.Media.insertImage deprecated

我确实使用了 workManager 和 viewModel 不确定这是否适用于您的用例，我确实在 API 26 和 API 30 上测试了我的答案。