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    Puis-je poster des contenus à partir d’une tablette Ipad ?
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  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
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    Afin de palier aux difficultés d’installation dues principalement aux dépendances logicielles coté serveur, un script d’installation "tout en un" en bash a été créé afin de faciliter cette étape sur un serveur doté d’une distribution Linux compatible.
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Sur d’autres sites (6700)

  • Stream a short video continuously with ffmpeg

    12 janvier 2014, par Blue Sky

    I have a short video (3 sec), and I want to stream it over a UDP address like udp ://127.0.0.1:1000 continously (repeatedly) so that the stream runs forever unless the user stops the streaming session. How can I do so ? Thanks !

  • I am able to create m3u8 file using ffmpeg from rtmp live but not able to play the file in html5 video tag & apple device

    3 janvier 2014, par Nikita

    I am able to create the m3u8 file by following steps :

    1.Execute ffmpeg -v verbose -i rtmp://<host>:<port>/<stream> -c:v libx264 -c:a aac -ac 1 -strict -2 -crf 18 -profile:v baseline -maxrate 400k -bufsize 1835k -pix_fmt yuv420p -flags -global_header -hls_time 10 -hls_list_size 6 -hls_wrap 10 -start_number 1 <pathtofolderyouwantto>/<streamname>.m3u8
    </streamname></pathtofolderyouwantto></stream></port></host>

    2.Make that folder you just mentioned on ffmpeg command () to be accessible by an http url.

    3.Create a simple html page to play :

    <video controls="controls" width="480" height="270" src="<streamName>.m3u8"></video>

    But not able to play using html5 video tag as well as in apple device.

    following is my ffmpeg console output :

    sending ctrl. type: 0x0003
    Invoking createStream
    FCSubscribe: livestream
    Invoking FCSubscribe
    RTMP_ClientPacket, received: invoke 29 bytes
    (object begin)
    Property:
    Property:
    Property: NULL
    Property:
    (object end)
    HandleInvoke, server invoking &lt;_result>
    HandleInvoke, received result for method call <createstream>
    SendPlay, seekTime=0, stopTime=0, sending play: livestream
    Invoking play
    sending ctrl. type: 0x0003
    RTMP_ClientPacket, received: invoke 21 bytes
    (object begin)
    Property:
    Property:
    Property: NULL
    Property: NULL
    (object end)
    HandleInvoke, server invoking &lt;_result>
    HandleInvoke, received result for method call <fcsubscribe>
    HandleChangeChunkSize, received: chunk size change to 1024
    Received FLV packet before play()! Ignoring.
    HandleCtrl, received ctrl. type: 0, len: 6
    HandleCtrl, Stream Begin 1
    RTMP_ClientPacket, received: invoke 160 bytes
    (object begin)
    Property:
    Property:
    Property: NULL
    Property:
    (object begin)
    Property:
    Property:
    Property:
    Property:
    Property:
    (object end)
    (object end)
    HandleInvoke, server invoking <onstatus>
    HandleInvoke, onStatus: NetStream.Play.Reset
    RTMP_ClientPacket, received: invoke 154 bytes
    (object begin)
    Property:
    Property:
    Property: NULL
    Property:
    (object begin)
    Property:
    Property:
    Property:
    Property:
    Property:
    (object end)
    (object end)
    HandleInvoke, server invoking <onstatus>
    HandleInvoke, onStatus: NetStream.Play.Start
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465657184
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465659184
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465661184
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465662184
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465663184
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465678183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465680183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465682183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465684183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465686183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465688183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465690183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465692183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465694183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465696183
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465698182
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465700182
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465702182
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465704182
    sending ctrl. type: 0x0007
    HandleCtrl, received ctrl. type: 6, len: 6
    HandleCtrl, Ping 1465706182
    sending ctrl. type: 0x0007
    [flv @ 0263ce00] Estimating duration from bitrate, this may be inaccurate
    Input #0, flv, from &#39;rtmp://serveripaddress/oflaDemo/livestream live=1&#39;:
     Duration: N/A, start: 0.000000, bitrate: N/A
       Stream #0:0: Video: vp6f, yuv420p, 320x240, 1k tbr, 1k tbn, 1k tbc
    [graph 0 input from stream 0:0 @ 03020420] w:320 h:240 pixfmt:yuv420p tb:1/1000 fr:1000/1 sar:0/1 sws_param:flags=2
    [libx264 @ 02833600] using cpu capabilities: MMX2 SSE2Fast SSSE3 FastShuffle SSE4.2
    [libx264 @ 02833600] profile Constrained Baseline, level 4.2
    [mpegts @ 038c1180] muxrate VBR, pcr every 100 pkts, sdt every 200, pat/pmt every 40 pkts
    Output #0, hls, to &#39;C:/Program Files/Apache Software Foundation/apache-tomcat-6.0.35/webapps/mediaplayer/stream.m3u8&#39;:
     Metadata:
       encoder         : Lavf54.37.100
       Stream #0:0: Video: h264, yuv420p, 320x240, q=-1--1, 90k tbn, 1k tbc
    Stream mapping:
     Stream #0:0 -> #0:0 (vp6f -> libx264)
    Press [q] to stop, [?] for help
    Error while decoding stream #0:0: Error number -1 occurred
       Last message repeated 2 times
    *** 192 dup!
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 1 times
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=0.0 q=28.0 size=       0kB time=00:00:00.56 bitrate=   0.0kbits/s dup=601 drop=0
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 3 times
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 47 dup! fps=1129 q=47.0 size=       0kB time=00:00:01.17 bitrate=   0.0kbits/s dup=1199 drop=0
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 1 times
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1164 q=40.0 size=       0kB time=00:00:01.82 bitrate=   0.0kbits/s dup=1844 drop=0
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1181 q=57.0 size=       0kB time=00:00:02.48 bitrate=   0.0kbits/s dup=2489 drop=0
       Last message repeated 1 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 1 times
    *** 64 dup!
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 46 dup! fps=1181 q=44.0 size=       0kB time=00:00:03.09 bitrate=   0.0kbits/s dup=3088 drop=0
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
    *** 64 dup!
    *** 62 dup!
    *** 63 dup!
    *** 47 dup!
    *** 64 dup!
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 62 dup! fps=1190 q=49.0 size=       0kB time=00:00:03.74 bitrate=   0.0kbits/s dup=3733 drop=0
    *** 63 dup!
    *** 48 dup!
    *** 62 dup!
    *** 64 dup!
    *** 62 dup!
    *** 48 dup!
    *** 62 dup!
    *** 64 dup!
    *** 62 dup!
    *** 47 dup!
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1201 q=32.0 size=       0kB time=00:00:04.40 bitrate=   0.0kbits/s dup=4377 drop=0
       Last message repeated 2 times
    *** 48 dup!
    *** 63 dup!
       Last message repeated 1 times
    *** 62 dup!
    *** 48 dup!
    *** 63 dup!
       Last message repeated 1 times
    *** 62 dup!
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 48 dup! fps=1214 q=57.0 size=       0kB time=00:00:05.07 bitrate=   0.0kbits/s dup=5038 drop=0
    *** 63 dup!
    *** 62 dup!
    *** 63 dup!
    *** 48 dup!
    *** 62 dup!
    *** 63 dup!
       Last message repeated 1 times
    *** 47 dup!
    *** 64 dup!
    *** 63 dup!
       Last message repeated 1 times
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 47 dup! fps=1226 q=52.0 size=       0kB time=00:00:05.79 bitrate=   0.0kbits/s dup=5747 drop=0
    *** 63 dup!
       Last message repeated 3 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 1 times
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1232 q=57.0 size=       0kB time=00:00:06.51 bitrate=   0.0kbits/s dup=6455 drop=0
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 1 times
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1240 q=57.0 size=       0kB time=00:00:07.23 bitrate=   0.0kbits/s dup=7163 drop=0
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 1 times
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1243 q=44.0 size=       0kB time=00:00:07.95 bitrate=   0.0kbits/s dup=7871 drop=0
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 3 times
    *** 47 dup!
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1245 q=52.0 size=       0kB time=00:00:08.61 bitrate=   0.0kbits/s dup=8516 drop=0
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 2 times
    *** 47 dup!
    Bitrate not available, avio_tell() failed: Error number -22 occurred
    *** 63 dup! fps=1250 q=49.0 size=       0kB time=00:00:09.33 bitrate=   0.0kbits/s dup=9224 drop=0
       Last message repeated 2 times
    *** 47 dup!
    *** 63 dup!
       Last message repeated 1 times
    </onstatus></onstatus></fcsubscribe></createstream>
  • Recording video on Android using JavaCV (Updated)

    12 février 2014, par Fabio Bergmann

    I'm trying to record a video in Android using the JavaCV lib.
    I need to record the video in 640x360.

    I have installed everything as described in README.txt file and I followed the example as below :
    https://code.google.com/p/javacv/source/browse/samples/RecordActivity.java
    In this example, the video size is this :
    private int imageWidth = 320 ;
    private int imageHeight = 240 ;

    In my case, I need to record a video in 640x360 H.264.

    (UPDATE) I have reverted my code and kept exactly like in the example, just changing imageWidth and imageHeight to 640x360.
    Now I'm getting the video like this image :
    http://bergmann.net.br/img/screenshot_video_error.png

    Here is my code :

    import android.app.Activity;
    import android.content.Context;
    import android.content.pm.ActivityInfo;
    import android.hardware.Camera;
    import android.hardware.Camera.PreviewCallback;
    import android.media.AudioFormat;
    import android.media.AudioRecord;
    import android.media.MediaRecorder;
    import android.os.Bundle;
    import android.os.PowerManager;
    import android.util.Log;
    import android.view.Display;
    import android.view.KeyEvent;
    import android.view.LayoutInflater;
    import android.view.SurfaceHolder;
    import android.view.SurfaceView;
    import android.view.View;
    import android.view.View.OnClickListener;
    import android.view.WindowManager;
    import android.widget.Button;
    import android.widget.LinearLayout;
    import android.widget.RelativeLayout;

    import java.io.IOException;
    import java.nio.ShortBuffer;

    import com.googlecode.javacv.FFmpegFrameRecorder;

    import static com.googlecode.javacv.cpp.opencv_core.*;

    public class FFmpegRecordActivity extends Activity implements OnClickListener {

       private final static String CLASS_LABEL = "RecordActivity";
       private final static String LOG_TAG = CLASS_LABEL;

       private PowerManager.WakeLock mWakeLock;

       private String ffmpeg_link = "/mnt/sdcard/stream.flv";

       long startTime = 0;
       boolean recording = false;

       private volatile FFmpegFrameRecorder recorder;

       private boolean isPreviewOn = false;

       private int sampleAudioRateInHz = 44100;
       private int imageWidth = 640;
       private int imageHeight = 360;
       private int frameRate = 30;

       /* audio data getting thread */
       private AudioRecord audioRecord;
       private AudioRecordRunnable audioRecordRunnable;
       private Thread audioThread;
       volatile boolean runAudioThread = true;

       /* video data getting thread */
       private Camera cameraDevice;
       private CameraView cameraView;

       private IplImage yuvIplimage = null;

       /* layout setting */
       private final int bg_screen_bx = 232;
       private final int bg_screen_by = 128;
       private final int bg_screen_width = 700;
       private final int bg_screen_height = 500;
       private final int bg_width = 1123;
       private final int bg_height = 715;
       private final int live_width = 1280;
       private final int live_height = 720;
       private int screenWidth, screenHeight;
       private Button btnRecorderControl;

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

           setContentView(R.layout.main);

           PowerManager pm = (PowerManager) getSystemService(Context.POWER_SERVICE);
           mWakeLock = pm.newWakeLock(PowerManager.SCREEN_BRIGHT_WAKE_LOCK,
                   CLASS_LABEL);
           mWakeLock.acquire();

           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,
                       CLASS_LABEL);
               mWakeLock.acquire();
           }
       }

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

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

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

           recording = false;

           if (cameraView != null) {
               cameraView.stopPreview();
               cameraDevice.release();
               cameraDevice = null;
           }

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

       private void initLayout() {

           /* get size of screen */
           Display display = ((WindowManager) getSystemService(Context.WINDOW_SERVICE))
                   .getDefaultDisplay();
           screenWidth = display.getWidth();
           screenHeight = display.getHeight();
           RelativeLayout.LayoutParams layoutParam = null;
           LayoutInflater myInflate = null;
           myInflate = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
           RelativeLayout topLayout = new RelativeLayout(this);
           setContentView(topLayout);
           LinearLayout preViewLayout = (LinearLayout) myInflate.inflate(
                   R.layout.main, null);
           layoutParam = new RelativeLayout.LayoutParams(screenWidth, screenHeight);
           topLayout.addView(preViewLayout, layoutParam);

           /* add control button: start and stop */
           btnRecorderControl = (Button) findViewById(R.id.recorder_control);
           btnRecorderControl.setText("Start");
           btnRecorderControl.setOnClickListener(this);

           /* add camera view */
           int display_width_d = (int) (1.0 * bg_screen_width * screenWidth / bg_width);
           int display_height_d = (int) (1.0 * bg_screen_height * screenHeight / bg_height);
           int prev_rw, prev_rh;
           if (1.0 * display_width_d / display_height_d > 1.0 * live_width
                   / live_height) {
               prev_rh = display_height_d;
               prev_rw = (int) (1.0 * display_height_d * live_width / live_height);
           } else {
               prev_rw = display_width_d;
               prev_rh = (int) (1.0 * display_width_d * live_height / live_width);
           }
           prev_rw = 640;
           prev_rh = 360;
           layoutParam = new RelativeLayout.LayoutParams(prev_rw, prev_rh);
           layoutParam.topMargin = (int) (1.0 * bg_screen_by * screenHeight / bg_height);
           layoutParam.leftMargin = (int) (1.0 * bg_screen_bx * screenWidth / bg_width);

           cameraDevice = Camera.open();
           Log.i(LOG_TAG, "cameara open");
           cameraView = new CameraView(this, cameraDevice);
           topLayout.addView(cameraView, layoutParam);
           Log.i(LOG_TAG, "cameara preview start: OK");
       }

       // ---------------------------------------
       // initialize ffmpeg_recorder
       // ---------------------------------------
       private void initRecorder() {

           Log.w(LOG_TAG, "init recorder");

           if (yuvIplimage == null) {
               yuvIplimage = IplImage.create(imageWidth, imageHeight,
                       IPL_DEPTH_8U, 2);
               Log.i(LOG_TAG, "create yuvIplimage");
           }

           Log.i(LOG_TAG, "ffmpeg_url: " + ffmpeg_link);
           recorder = new FFmpegFrameRecorder(ffmpeg_link, imageWidth,
                   imageHeight, 1);
           recorder.setFormat("flv");
           recorder.setSampleRate(sampleAudioRateInHz);
           // Set in the surface changed method
           recorder.setFrameRate(frameRate);

           Log.i(LOG_TAG, "recorder initialize success");

           audioRecordRunnable = new AudioRecordRunnable();
           audioThread = new Thread(audioRecordRunnable);
       }

       public void startRecording() {

           try {
               recorder.start();
               startTime = System.currentTimeMillis();
               recording = true;
               audioThread.start();

           } catch (FFmpegFrameRecorder.Exception e) {
               e.printStackTrace();
           }
       }

       public void stopRecording() {

           runAudioThread = false;

           if (recorder != null &amp;&amp; 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) {

           if (keyCode == KeyEvent.KEYCODE_BACK) {
               if (recording) {
                   stopRecording();
               }

               finish();

               return true;
           }

           return super.onKeyDown(keyCode, event);
       }

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

           @Override
           public void run() {
               android.os.Process
                       .setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);

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

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

               audioData = new short[bufferSize];

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

               /* ffmpeg_audio encoding loop */
               while (runAudioThread) {
                   // Log.v(LOG_TAG,"recording? " + recording);
                   bufferReadResult = audioRecord.read(audioData, 0,
                           audioData.length);
                   if (bufferReadResult > 0) {
                       Log.v(LOG_TAG, "bufferReadResult: " + bufferReadResult);
                       // If "recording" isn&#39;t true when start this thread, it
                       // never get&#39;s set according to this if statement...!!!
                       // Why? Good question...
                       if (recording) {
                           try {
                               recorder.record(ShortBuffer.wrap(audioData, 0,
                                       bufferReadResult));
                               // Log.v(LOG_TAG,"recording " + 1024*i + " to " +
                               // 1024*i+1024);
                           } catch (FFmpegFrameRecorder.Exception e) {
                               Log.v(LOG_TAG, e.getMessage());
                               e.printStackTrace();
                           }
                       }
                   }
               }
               Log.v(LOG_TAG, "AudioThread Finished, release audioRecord");

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

       // ---------------------------------------------
       // camera thread, gets and encodes video data
       // ---------------------------------------------
       class CameraView extends SurfaceView implements SurfaceHolder.Callback,
               PreviewCallback {

           private SurfaceHolder mHolder;
           private Camera mCamera;

           public CameraView(Context context, Camera camera) {
               super(context);
               Log.w("camera", "camera view");
               mCamera = camera;
               mHolder = getHolder();
               mHolder.addCallback(CameraView.this);
               mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
               mCamera.setPreviewCallback(CameraView.this);
           }

           @Override
           public void surfaceCreated(SurfaceHolder holder) {
               try {
                   stopPreview();
                   mCamera.setPreviewDisplay(holder);
               } catch (IOException exception) {
                   mCamera.release();
                   mCamera = null;
               }
           }

           public void surfaceChanged(SurfaceHolder holder, int format, int width,
                   int height) {
               Log.v(LOG_TAG, "Setting imageWidth: " + imageWidth
                       + " imageHeight: " + imageHeight + " frameRate: "
                       + frameRate);
               Camera.Parameters camParams = mCamera.getParameters();
               camParams.setPreviewSize(imageWidth, imageHeight);

               Log.v(LOG_TAG,
                       "Preview Framerate: " + camParams.getPreviewFrameRate());

               camParams.setPreviewFrameRate(frameRate);
               mCamera.setParameters(camParams);
               startPreview();
           }

           @Override
           public void surfaceDestroyed(SurfaceHolder holder) {
               try {
                   mHolder.addCallback(null);
                   mCamera.setPreviewCallback(null);
               } catch (RuntimeException e) {
                   // The camera has probably just been released, ignore.
               }
           }

           public void startPreview() {
               if (!isPreviewOn &amp;&amp; mCamera != null) {
                   isPreviewOn = true;
                   mCamera.startPreview();
               }
           }

           public void stopPreview() {
               if (isPreviewOn &amp;&amp; mCamera != null) {
                   isPreviewOn = false;
                   mCamera.stopPreview();
               }
           }

           @Override
           public void onPreviewFrame(byte[] data, Camera camera) {
               /* get video data */
               if (yuvIplimage != null &amp;&amp; recording) {
                   yuvIplimage.getByteBuffer().put(data);

                   Log.v(LOG_TAG, "Writing Frame");
                   try {
                       long t = 1000 * (System.currentTimeMillis() - startTime);
                       if (t > recorder.getTimestamp()) {
                           recorder.setTimestamp(t);
                       }
                       recorder.record(yuvIplimage);
                   } catch (FFmpegFrameRecorder.Exception e) {
                       Log.v(LOG_TAG, e.getMessage());
                       e.printStackTrace();
                   }
               }
           }
       }

       @Override
       public void onClick(View v) {
           if (!recording) {
               startRecording();
               Log.w(LOG_TAG, "Start Button Pushed");
               btnRecorderControl.setText("Stop");
           } else {
               // This will trigger the audio recording loop to stop and then set
               // isRecorderStart = false;
               stopRecording();
               Log.w(LOG_TAG, "Stop Button Pushed");
               btnRecorderControl.setText("Start");
           }
       }
    }

    Anyone know how to fix it ?

    Thanks in advance !