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    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

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    31 janvier 2010, par

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Sur d’autres sites (7498)

  • How to implement live camera plus WebGL overlay live streams

    12 avril 2016, par zproxy

    The goal is to test a youtube live stream configuration where :

    1. Samsung Galaxy S6/S7 (android) (wifi) streams cameras (one or all)
    2. Chrome renders a WebGL 3D (static or realtime, webrtc ?, flash ?) to be overlayed (localhost)
    3. ffmpeg mixes the available stream and upstreams to youtube live event

    Whats needed to implement this configration ? Yes this may require actual custom implementation for android app and chrome app in the end.

  • squeeze image while capturing video with FFmpegFrameRecorder

    12 avril 2016, par Saty

    I am trying to stream video with FFmpegFrameRecorder using javacv. All are working great except I find videos which are actually images are bit squeeze from the height.

    I am using the below code which half of the internet community is using to live stream

    public class MainActivity extends Activity implements OnClickListener {

    private final static String LOG_TAG = "MainActivity";

    private PowerManager.WakeLock mWakeLock;

    private String ffmpeg_link = "rtmp://username:password@xxx.xxx.xxx.xxx:1935/live/test.flv";
    //private String ffmpeg_link = "/mnt/sdcard/new_stream.flv";

    private volatile FFmpegFrameRecorder recorder;
    boolean recording = false;
    long startTime = 0;

    private int sampleAudioRateInHz = 44100;
    private int imageWidth = 320;
    private int imageHeight = 240;
    private int frameRate = 30;

    private Thread audioThread;
    volatile boolean runAudioThread = true;
    private AudioRecord audioRecord;
    private AudioRecordRunnable audioRecordRunnable;

    private CameraView cameraView;
    private IplImage yuvIplimage = null;

    private Button recordButton;
    private LinearLayout mainLayout;

    @Override
    public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);

       setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
       setContentView(R.layout.activity_main);

       initLayout();
       initRecorder();
    }

    @Override
    protected void onResume() {
       super.onResume();

       if (mWakeLock == null) {
           PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
           mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, LOG_TAG);
           mWakeLock.acquire();
       }
    }

    @Override
    protected void onPause() {
       super.onPause();

       if (mWakeLock != null) {
           mWakeLock.release();
           mWakeLock = null;
       }
    }

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

       recording = false;
    }


    private void initLayout() {

       mainLayout = (LinearLayout) this.findViewById(R.id.record_layout);

       recordButton = (Button) findViewById(R.id.recorder_control);
       recordButton.setText("Start");
       recordButton.setOnClickListener(this);

       cameraView = new CameraView(this);

       LinearLayout.LayoutParams layoutParam = new LinearLayout.LayoutParams(imageWidth, imageHeight);        
       mainLayout.addView(cameraView, layoutParam);
       Log.v(LOG_TAG, "added cameraView to mainLayout");
    }

    private void initRecorder() {
       Log.w(LOG_TAG,"initRecorder");

       if (yuvIplimage == null) {
           // Recreated after frame size is set in surface change method
           yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_8U, 2);
           //yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_32S, 2);

           Log.v(LOG_TAG, "IplImage.create");
       }

       recorder = new FFmpegFrameRecorder(ffmpeg_link, imageWidth, imageHeight, 1);
       Log.v(LOG_TAG, "FFmpegFrameRecorder: " + ffmpeg_link + " imageWidth: " + imageWidth + " imageHeight " + imageHeight);

       recorder.setFormat("flv");
       Log.v(LOG_TAG, "recorder.setFormat(\"flv\")");

       recorder.setSampleRate(sampleAudioRateInHz);
       Log.v(LOG_TAG, "recorder.setSampleRate(sampleAudioRateInHz)");

       // re-set in the surface changed method as well
       recorder.setFrameRate(frameRate);
       Log.v(LOG_TAG, "recorder.setFrameRate(frameRate)");

       // Create audio recording thread
       audioRecordRunnable = new AudioRecordRunnable();
       audioThread = new Thread(audioRecordRunnable);
    }

    // Start the capture
    public void startRecording() {
       try {
           recorder.start();
           startTime = System.currentTimeMillis();
           recording = true;
           audioThread.start();
       } catch (FFmpegFrameRecorder.Exception e) {
           e.printStackTrace();
       }
    }

    public void stopRecording() {
       // This should stop the audio thread from running
       runAudioThread = false;

       if (recorder != null && recording) {
           recording = false;
           Log.v(LOG_TAG,"Finishing recording, calling stop and release on recorder");
           try {
               recorder.stop();
               recorder.release();
           } catch (FFmpegFrameRecorder.Exception e) {
               e.printStackTrace();
           }
           recorder = null;
       }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
       // Quit when back button is pushed
       if (keyCode == KeyEvent.KEYCODE_BACK) {
           if (recording) {
               stopRecording();
           }
           finish();
           return true;
       }
       return super.onKeyDown(keyCode, event);
    }

    @Override
    public void onClick(View v) {
       if (!recording) {
           startRecording();
           Log.w(LOG_TAG, "Start Button Pushed");
           recordButton.setText("Stop");
       } else {
           stopRecording();
           Log.w(LOG_TAG, "Stop Button Pushed");
           recordButton.setText("Start");
       }
    }

    //---------------------------------------------
    // audio thread, gets and encodes audio data
    //---------------------------------------------
    class AudioRecordRunnable implements Runnable {

       @Override
       public void run() {
           // Set the thread priority
           android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);

           // Audio
           int bufferSize;
           short[] audioData;
           int bufferReadResult;

           bufferSize = AudioRecord.getMinBufferSize(sampleAudioRateInHz,
                   AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);
           audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleAudioRateInHz,
                   AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);

           audioData = new short[bufferSize];

           Log.d(LOG_TAG, "audioRecord.startRecording()");
           audioRecord.startRecording();

           // Audio Capture/Encoding Loop
           while (runAudioThread) {
               // Read from audioRecord
               bufferReadResult = audioRecord.read(audioData, 0, audioData.length);
               if (bufferReadResult > 0) {
                   //Log.v(LOG_TAG,"audioRecord bufferReadResult: " + bufferReadResult);

                   // Changes in this variable may not be picked up despite it being "volatile"
                   if (recording) {
                       try {
                           // Write to FFmpegFrameRecorder
                           Buffer[] buffer = {ShortBuffer.wrap(audioData, 0, bufferReadResult)};                        
                           recorder.record(buffer);
                       } catch (FFmpegFrameRecorder.Exception e) {
                           Log.v(LOG_TAG,e.getMessage());
                           e.printStackTrace();
                       }
                   }
               }
           }
           Log.v(LOG_TAG,"AudioThread Finished");

           /* Capture/Encoding finished, release recorder */
           if (audioRecord != null) {
               audioRecord.stop();
               audioRecord.release();
               audioRecord = null;
               Log.v(LOG_TAG,"audioRecord released");
           }
       }
    }

    class CameraView extends SurfaceView implements SurfaceHolder.Callback, PreviewCallback {

       private boolean previewRunning = false;

       private SurfaceHolder holder;
       private Camera camera;

       private byte[] previewBuffer;

       long videoTimestamp = 0;

       Bitmap bitmap;
       Canvas canvas;

       public CameraView(Context _context) {
           super(_context);

           holder = this.getHolder();
           holder.addCallback(this);
           holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
       }

       @Override
       public void surfaceCreated(SurfaceHolder holder) {
           camera = Camera.open();

           try {
               camera.setPreviewDisplay(holder);
               camera.setPreviewCallback(this);

               Camera.Parameters currentParams = camera.getParameters();
               Log.v(LOG_TAG,"Preview Framerate: " + currentParams.getPreviewFrameRate());
               Log.v(LOG_TAG,"Preview imageWidth: " + currentParams.getPreviewSize().width + " imageHeight: " + currentParams.getPreviewSize().height);

               // Use these values
               imageWidth = currentParams.getPreviewSize().width;
               imageHeight = currentParams.getPreviewSize().height;
               frameRate = currentParams.getPreviewFrameRate();                

               bitmap = Bitmap.createBitmap(imageWidth, imageHeight, Bitmap.Config.ALPHA_8);


               /*
               Log.v(LOG_TAG,"Creating previewBuffer size: " + imageWidth * imageHeight * ImageFormat.getBitsPerPixel(currentParams.getPreviewFormat())/8);
               previewBuffer = new byte[imageWidth * imageHeight * ImageFormat.getBitsPerPixel(currentParams.getPreviewFormat())/8];
               camera.addCallbackBuffer(previewBuffer);
               camera.setPreviewCallbackWithBuffer(this);
               */              

               camera.startPreview();
               previewRunning = true;
           }
           catch (IOException e) {
               Log.v(LOG_TAG,e.getMessage());
               e.printStackTrace();
           }  
       }

       public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
           Log.v(LOG_TAG,"Surface Changed: width " + width + " height: " + height);

           // We would do this if we want to reset the camera parameters
           /*
           if (!recording) {
               if (previewRunning){
                   camera.stopPreview();
               }
               try {
                   //Camera.Parameters cameraParameters = camera.getParameters();
                   //p.setPreviewSize(imageWidth, imageHeight);
                   //p.setPreviewFrameRate(frameRate);
                   //camera.setParameters(cameraParameters);

                   camera.setPreviewDisplay(holder);
                   camera.startPreview();
                   previewRunning = true;
               }
               catch (IOException e) {
                   Log.e(LOG_TAG,e.getMessage());
                   e.printStackTrace();
               }  
           }            
           */

           // Get the current parameters
           Camera.Parameters currentParams = camera.getParameters();
           Log.v(LOG_TAG,"Preview Framerate: " + currentParams.getPreviewFrameRate());
           Log.v(LOG_TAG,"Preview imageWidth: " + currentParams.getPreviewSize().width + " imageHeight: " + currentParams.getPreviewSize().height);

           // Use these values
           imageWidth = currentParams.getPreviewSize().width;
           imageHeight = currentParams.getPreviewSize().height;
           frameRate = currentParams.getPreviewFrameRate();

           // Create the yuvIplimage if needed
           yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_8U, 2);
           //yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_32S, 2);
       }

       @Override
       public void surfaceDestroyed(SurfaceHolder holder) {
           try {
               camera.setPreviewCallback(null);

               previewRunning = false;
               camera.release();

           } catch (RuntimeException e) {
               Log.v(LOG_TAG,e.getMessage());
               e.printStackTrace();
           }
       }

       @Override
       public void onPreviewFrame(byte[] data, Camera camera) {

           if (yuvIplimage != null && recording) {
               videoTimestamp = 1000 * (System.currentTimeMillis() - startTime);

               // Put the camera preview frame right into the yuvIplimage object
               yuvIplimage.getByteBuffer().put(data);

               // FAQ about IplImage:
               // - For custom raw processing of data, getByteBuffer() returns an NIO direct
               //   buffer wrapped around the memory pointed by imageData, and under Android we can
               //   also use that Buffer with Bitmap.copyPixelsFromBuffer() and copyPixelsToBuffer().
               // - To get a BufferedImage from an IplImage, we may call getBufferedImage().
               // - The createFrom() factory method can construct an IplImage from a BufferedImage.
               // - There are also a few copy*() methods for BufferedImage<->IplImage data transfers.

               // Let's try it..
               // This works but only on transparency
               // Need to find the right Bitmap and IplImage matching types

               /*
               bitmap.copyPixelsFromBuffer(yuvIplimage.getByteBuffer());
               //bitmap.setPixel(10,10,Color.MAGENTA);

               canvas = new Canvas(bitmap);
               Paint paint = new Paint();
               paint.setColor(Color.GREEN);
               float leftx = 20;
               float topy = 20;
               float rightx = 50;
               float bottomy = 100;
               RectF rectangle = new RectF(leftx,topy,rightx,bottomy);
               canvas.drawRect(rectangle, paint);

               bitmap.copyPixelsToBuffer(yuvIplimage.getByteBuffer());
               */
               //Log.v(LOG_TAG,"Writing Frame");

               try {

                   // Get the correct time
                   recorder.setTimestamp(videoTimestamp);

                   // Record the image into FFmpegFrameRecorder
                   recorder.record(yuvIplimage);

               } catch (FFmpegFrameRecorder.Exception e) {
                   Log.v(LOG_TAG,e.getMessage());
                   e.printStackTrace();
               }
           }
       }
    }

    }

  • Cant we use mp4 as format of FFmpegFrameRecorder while RTMP streaming

    13 avril 2016, par Saty

    I am trying to stream video with FFmpegFrameRecorder using javacv. All are working good however I want to use "mp4" as the recording format instead of FLV. is that possible because when i set that, it crashed ?

    I am using the below code which half of the internet community is using to live stream

    public class MainActivity extends Activity implements OnClickListener {

    private final static String LOG_TAG = "MainActivity";

    private PowerManager.WakeLock mWakeLock;

    private String ffmpeg_link = "rtmp://username:password@xxx.xxx.xxx.xxx:1935/live/test.flv";
    //private String ffmpeg_link = "/mnt/sdcard/new_stream.flv";

    private volatile FFmpegFrameRecorder recorder;
    boolean recording = false;
    long startTime = 0;

    private int sampleAudioRateInHz = 44100;
    private int imageWidth = 320;
    private int imageHeight = 240;
    private int frameRate = 30;

    private Thread audioThread;
    volatile boolean runAudioThread = true;
    private AudioRecord audioRecord;
    private AudioRecordRunnable audioRecordRunnable;

    private CameraView cameraView;
    private IplImage yuvIplimage = null;

    private Button recordButton;
    private LinearLayout mainLayout;

    @Override
    public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);

       setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
       setContentView(R.layout.activity_main);

       initLayout();
       initRecorder();
    }

    @Override
    protected void onResume() {
       super.onResume();

       if (mWakeLock == null) {
           PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
           mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK, LOG_TAG);
           mWakeLock.acquire();
       }
    }

    @Override
    protected void onPause() {
       super.onPause();

       if (mWakeLock != null) {
           mWakeLock.release();
           mWakeLock = null;
       }
    }

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

       recording = false;
    }


    private void initLayout() {

       mainLayout = (LinearLayout) this.findViewById(R.id.record_layout);

       recordButton = (Button) findViewById(R.id.recorder_control);
       recordButton.setText("Start");
       recordButton.setOnClickListener(this);

       cameraView = new CameraView(this);

       LinearLayout.LayoutParams layoutParam = new LinearLayout.LayoutParams(imageWidth, imageHeight);        
       mainLayout.addView(cameraView, layoutParam);
       Log.v(LOG_TAG, "added cameraView to mainLayout");
    }

    private void initRecorder() {
       Log.w(LOG_TAG,"initRecorder");

       if (yuvIplimage == null) {
           // Recreated after frame size is set in surface change method
           yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_8U, 2);
           //yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_32S, 2);

           Log.v(LOG_TAG, "IplImage.create");
       }

       recorder = new FFmpegFrameRecorder(ffmpeg_link, imageWidth, imageHeight, 1);
       Log.v(LOG_TAG, "FFmpegFrameRecorder: " + ffmpeg_link + " imageWidth: " + imageWidth + " imageHeight " + imageHeight);

       recorder.setFormat("flv");
       Log.v(LOG_TAG, "recorder.setFormat(\"flv\")");

       recorder.setSampleRate(sampleAudioRateInHz);
       Log.v(LOG_TAG, "recorder.setSampleRate(sampleAudioRateInHz)");

       // re-set in the surface changed method as well
       recorder.setFrameRate(frameRate);
       Log.v(LOG_TAG, "recorder.setFrameRate(frameRate)");

       // Create audio recording thread
       audioRecordRunnable = new AudioRecordRunnable();
       audioThread = new Thread(audioRecordRunnable);
    }

    // Start the capture
    public void startRecording() {
       try {
           recorder.start();
           startTime = System.currentTimeMillis();
           recording = true;
           audioThread.start();
       } catch (FFmpegFrameRecorder.Exception e) {
           e.printStackTrace();
       }
    }

    public void stopRecording() {
       // This should stop the audio thread from running
       runAudioThread = false;

       if (recorder != null && recording) {
           recording = false;
           Log.v(LOG_TAG,"Finishing recording, calling stop and release on recorder");
           try {
               recorder.stop();
               recorder.release();
           } catch (FFmpegFrameRecorder.Exception e) {
               e.printStackTrace();
           }
           recorder = null;
       }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
       // Quit when back button is pushed
       if (keyCode == KeyEvent.KEYCODE_BACK) {
           if (recording) {
               stopRecording();
           }
           finish();
           return true;
       }
       return super.onKeyDown(keyCode, event);
    }

    @Override
    public void onClick(View v) {
       if (!recording) {
           startRecording();
           Log.w(LOG_TAG, "Start Button Pushed");
           recordButton.setText("Stop");
       } else {
           stopRecording();
           Log.w(LOG_TAG, "Stop Button Pushed");
           recordButton.setText("Start");
       }
    }

    //---------------------------------------------
    // audio thread, gets and encodes audio data
    //---------------------------------------------
    class AudioRecordRunnable implements Runnable {

       @Override
       public void run() {
           // Set the thread priority
           android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);

           // Audio
           int bufferSize;
           short[] audioData;
           int bufferReadResult;

           bufferSize = AudioRecord.getMinBufferSize(sampleAudioRateInHz,
                   AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT);
           audioRecord = new AudioRecord(MediaRecorder.AudioSource.MIC, sampleAudioRateInHz,
                   AudioFormat.CHANNEL_CONFIGURATION_MONO, AudioFormat.ENCODING_PCM_16BIT, bufferSize);

           audioData = new short[bufferSize];

           Log.d(LOG_TAG, "audioRecord.startRecording()");
           audioRecord.startRecording();

           // Audio Capture/Encoding Loop
           while (runAudioThread) {
               // Read from audioRecord
               bufferReadResult = audioRecord.read(audioData, 0, audioData.length);
               if (bufferReadResult > 0) {
                   //Log.v(LOG_TAG,"audioRecord bufferReadResult: " + bufferReadResult);

                   // Changes in this variable may not be picked up despite it being "volatile"
                   if (recording) {
                       try {
                           // Write to FFmpegFrameRecorder
                           Buffer[] buffer = {ShortBuffer.wrap(audioData, 0, bufferReadResult)};                        
                           recorder.record(buffer);
                       } catch (FFmpegFrameRecorder.Exception e) {
                           Log.v(LOG_TAG,e.getMessage());
                           e.printStackTrace();
                       }
                   }
               }
           }
           Log.v(LOG_TAG,"AudioThread Finished");

           /* Capture/Encoding finished, release recorder */
           if (audioRecord != null) {
               audioRecord.stop();
               audioRecord.release();
               audioRecord = null;
               Log.v(LOG_TAG,"audioRecord released");
           }
       }
    }

    class CameraView extends SurfaceView implements SurfaceHolder.Callback, PreviewCallback {

       private boolean previewRunning = false;

       private SurfaceHolder holder;
       private Camera camera;

       private byte[] previewBuffer;

       long videoTimestamp = 0;

       Bitmap bitmap;
       Canvas canvas;

       public CameraView(Context _context) {
           super(_context);

           holder = this.getHolder();
           holder.addCallback(this);
           holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
       }

       @Override
       public void surfaceCreated(SurfaceHolder holder) {
           camera = Camera.open();

           try {
               camera.setPreviewDisplay(holder);
               camera.setPreviewCallback(this);

               Camera.Parameters currentParams = camera.getParameters();
               Log.v(LOG_TAG,"Preview Framerate: " + currentParams.getPreviewFrameRate());
               Log.v(LOG_TAG,"Preview imageWidth: " + currentParams.getPreviewSize().width + " imageHeight: " + currentParams.getPreviewSize().height);

               // Use these values
               imageWidth = currentParams.getPreviewSize().width;
               imageHeight = currentParams.getPreviewSize().height;
               frameRate = currentParams.getPreviewFrameRate();                

               bitmap = Bitmap.createBitmap(imageWidth, imageHeight, Bitmap.Config.ALPHA_8);


               /*
               Log.v(LOG_TAG,"Creating previewBuffer size: " + imageWidth * imageHeight * ImageFormat.getBitsPerPixel(currentParams.getPreviewFormat())/8);
               previewBuffer = new byte[imageWidth * imageHeight * ImageFormat.getBitsPerPixel(currentParams.getPreviewFormat())/8];
               camera.addCallbackBuffer(previewBuffer);
               camera.setPreviewCallbackWithBuffer(this);
               */              

               camera.startPreview();
               previewRunning = true;
           }
           catch (IOException e) {
               Log.v(LOG_TAG,e.getMessage());
               e.printStackTrace();
           }  
       }

       public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
           Log.v(LOG_TAG,"Surface Changed: width " + width + " height: " + height);

           // We would do this if we want to reset the camera parameters
           /*
           if (!recording) {
               if (previewRunning){
                   camera.stopPreview();
               }
               try {
                   //Camera.Parameters cameraParameters = camera.getParameters();
                   //p.setPreviewSize(imageWidth, imageHeight);
                   //p.setPreviewFrameRate(frameRate);
                   //camera.setParameters(cameraParameters);

                   camera.setPreviewDisplay(holder);
                   camera.startPreview();
                   previewRunning = true;
               }
               catch (IOException e) {
                   Log.e(LOG_TAG,e.getMessage());
                   e.printStackTrace();
               }  
           }            
           */

           // Get the current parameters
           Camera.Parameters currentParams = camera.getParameters();
           Log.v(LOG_TAG,"Preview Framerate: " + currentParams.getPreviewFrameRate());
           Log.v(LOG_TAG,"Preview imageWidth: " + currentParams.getPreviewSize().width + " imageHeight: " + currentParams.getPreviewSize().height);

           // Use these values
           imageWidth = currentParams.getPreviewSize().width;
           imageHeight = currentParams.getPreviewSize().height;
           frameRate = currentParams.getPreviewFrameRate();

           // Create the yuvIplimage if needed
           yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_8U, 2);
           //yuvIplimage = IplImage.create(imageWidth, imageHeight, IPL_DEPTH_32S, 2);
       }

       @Override
       public void surfaceDestroyed(SurfaceHolder holder) {
           try {
               camera.setPreviewCallback(null);

               previewRunning = false;
               camera.release();

           } catch (RuntimeException e) {
               Log.v(LOG_TAG,e.getMessage());
               e.printStackTrace();
           }
       }

       @Override
       public void onPreviewFrame(byte[] data, Camera camera) {

           if (yuvIplimage != null && recording) {
               videoTimestamp = 1000 * (System.currentTimeMillis() - startTime);

               // Put the camera preview frame right into the yuvIplimage object
               yuvIplimage.getByteBuffer().put(data);

               // FAQ about IplImage:
               // - For custom raw processing of data, getByteBuffer() returns an NIO direct
               //   buffer wrapped around the memory pointed by imageData, and under Android we can
               //   also use that Buffer with Bitmap.copyPixelsFromBuffer() and copyPixelsToBuffer().
               // - To get a BufferedImage from an IplImage, we may call getBufferedImage().
               // - The createFrom() factory method can construct an IplImage from a BufferedImage.
               // - There are also a few copy*() methods for BufferedImage<->IplImage data transfers.

               // Let's try it..
               // This works but only on transparency
               // Need to find the right Bitmap and IplImage matching types

               /*
               bitmap.copyPixelsFromBuffer(yuvIplimage.getByteBuffer());
               //bitmap.setPixel(10,10,Color.MAGENTA);

               canvas = new Canvas(bitmap);
               Paint paint = new Paint();
               paint.setColor(Color.GREEN);
               float leftx = 20;
               float topy = 20;
               float rightx = 50;
               float bottomy = 100;
               RectF rectangle = new RectF(leftx,topy,rightx,bottomy);
               canvas.drawRect(rectangle, paint);

               bitmap.copyPixelsToBuffer(yuvIplimage.getByteBuffer());
               */
               //Log.v(LOG_TAG,"Writing Frame");

               try {

                   // Get the correct time
                   recorder.setTimestamp(videoTimestamp);

                   // Record the image into FFmpegFrameRecorder
                   recorder.record(yuvIplimage);

               } catch (FFmpegFrameRecorder.Exception e) {
                   Log.v(LOG_TAG,e.getMessage());
                   e.printStackTrace();
               }
           }
       }
    }

    }