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我试图记录mpeg2-ts视频，以便使用Android MediaRecorder类描述here到它传输到server/socket ...记录MPEG TS使用MediaRecorder
的代码如下：
public class MediaRecorderDemo extends Activity
{
private final static String TAG = "MediaRecorderDemo";
Camera camera;
CameraPreview cameraPreview;
MediaRecorder mediaRecorder;
File outputFile = new File(Environment.getExternalStorageDirectory().getPath() + "/out1.ts");
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.media_recorder_demo_layout);
camera = getCameraInstance();
cameraPreview = new CameraPreview(this);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(cameraPreview);
}
private Camera getCameraInstance()
{
final String FUNCTION = "getCameraInstance";
Camera c = null;
try
{
c = Camera.open();
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
return c;
}
void initMediaRecorder()
{
final String FUNCTION = "initMediaRecorder";
FileDescriptor outputFileFD = null;
try
{
outputFile.createNewFile();
outputFileFD = new FileOutputStream(outputFile).getFD();
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
mediaRecorder = new MediaRecorder();
mediaRecorder.setOnErrorListener(new MediaRecorder.OnErrorListener() {
final static String TAG = "MediaRecorder.onErrorListener";
@Override
public void onError(MediaRecorder mr, int what, int extra) {
Log.e(TAG, "Error : " + what + " " + extra);
}
});
camera.unlock();
mediaRecorder.setPreviewDisplay(cameraPreview.getHolder().getSurface());
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.DEFAULT);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
//mediaRecorder.setProfile(CamcorderProfile.get(CamcorderProfile.QUALITY_LOW));
mediaRecorder.setOutputFormat(8);
Log.d(TAG, "File Exists : " + outputFile.exists());
mediaRecorder.setOutputFile(outputFileFD);
mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);
mediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);
//mediaRecorder.setVideoSize(640, 480);
mediaRecorder.setMaxDuration(-1);
//mediaRecorder.setVideoFrameRate(16);
mediaRecorder.setVideoEncodingBitRate(1024 * 1024);
try
{
mediaRecorder.prepare();
Log.d(TAG, "MediaRecorder Prepared.");
mediaRecorder.start();
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
//releaseMediaRecorder();
}
}
void releaseMediaRecorder()
{
final String FUNCTION = "releaseMediaRecorder";
try
{
if(mediaRecorder != null)
{
mediaRecorder.stop();
mediaRecorder.reset();
mediaRecorder.release();
mediaRecorder = null;
camera.lock();
}
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
}
void releaseCamera()
{
final String FUNCTION = "releaseCamera";
try
{
if(camera != null)
{
camera.stopPreview();
camera.release();
}
camera = null;
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
}
@Override
public void onStart()
{
super.onStart();
}
@Override
public void onPause()
{
super.onPause();
}
@Override
public void onResume()
{
super.onResume();
}
@Override
public void onStop()
{
super.onStop();
}
@Override
public void onDestroy()
{
super.onDestroy();
}
public class CameraPreview extends SurfaceView
{
private final static String TAG = "CameraPreview";
SurfaceHolder holder;
boolean isPreviewDisplaySet;
public CameraPreview(Context context)
{
this(context, (AttributeSet)null);
this.holder = getHolder();
this.holder.addCallback(new SurfaceHolderCallback());
}
public CameraPreview(Context context, AttributeSet attrSet)
{
this(context, attrSet, 0);
}
public CameraPreview(Context context, AttributeSet attrSet, int defStyle)
{
super(context, attrSet, defStyle);
}
private void releaseCamera()
{
if(camera != null)
{
camera.release();
camera = null;
}
}
private class SurfaceHolderCallback implements SurfaceHolder.Callback
{
@Override
public void surfaceCreated(SurfaceHolder holder)
{
final String FUNCTION = "surfaceCreated";
Log.d(TAG, "Surface Created.");
try
{
camera.setPreviewDisplay(holder);
camera.startPreview();
initMediaRecorder();
//mediaRecorder.start();
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
}
@Override
public void surfaceDestroyed(SurfaceHolder holder)
{
final String FUNCTION = "surfaceDestroyed";
Log.d(TAG, "Surface Destroyed.");
try
{
releaseMediaRecorder();
releaseCamera();
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
}
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h)
{
final String FUNCTION = "surfaceChanged";
Log.d(TAG, "Surface Changed.");
if(holder.getSurface() == null)
return;
try
{
camera.stopPreview();
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
try
{
camera.setPreviewDisplay(holder);
camera.startPreview();
}
catch(Exception e)
{
Log.e(TAG, FUNCTION + " : " + e.getMessage());
}
}
}
}
}
mediaRecorder.prepare()和mediaRecorder.start()被调用时没有任何错误，并显示相机预览... 但过了一段时间，预览被切断，然后屏幕冻结，并在输出路径上创建一个空文件... 此问题也正在报告Android Issue List，但还没有被纠正...
我试图在Galaxy Note N7000上使用Stock Android ICS ROM和三星Galaxy Tab 2 P3100上运行相同的应用程序，但与一个自定义安卓4.2 ROM ...所以它似乎并没有涉及到一个ROM或特定的硬件配置...
如果有什么是错过了或做错了，会很高兴，当然松了一口气我知道...？
谢谢...
你得到你的'logcat'任何错误？如果你有任何日志，你可以分享吗？另外，您是否仅通过“MPEG-2 TS”观察了这种行为，或者您是否还观察过说'MPEG-4'录制？ – Ganesh 2013-03-23 02:39:56
目前隐藏API OUTPUT_FORMAT_MPEG2TS仅适用于视频，如果对视频和音频进行编码，则ts输出格式不正确。解决方法是先启动两台MediaRecorder分别处理视频和音频，然后再自行处理多路视频和音频帧。 – yorkw 2015-06-10 10:39:23