Recherche avancée
Médias (2)
-
Granite de l’Aber Ildut
9 septembre 2011, par
Mis à jour : Septembre 2011
Langue : français
Type : Texte
-
Géodiversité
9 septembre 2011, par ,
Mis à jour : Août 2018
Langue : français
Type : Texte
Autres articles (62)
-
Publier sur MédiaSpip
13 juin 2013Puis-je poster des contenus à partir d’une tablette Ipad ?
Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir -
MediaSPIP 0.1 Beta version
25 avril 2011, parMediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
The zip file provided here only contains the sources of MediaSPIP in its standalone version.
To get a working installation, you must manually install all-software dependencies on the server.
If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...) -
Submit bugs and patches
13 avril 2011Unfortunately a software is never perfect.
If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
You may also (...)
Sur d’autres sites (4238)
-
Recording video on Android using JavaCV (Updated 2014 02 17)
25 septembre 2014, par Fabio BergmannI’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.pngHere is my code :
import static com.googlecode.javacv.cpp.opencv_core.IPL_DEPTH_8U;
import java.io.IOException;
import java.nio.ShortBuffer;
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 com.autosonvideo.helpers.Helpers;
import com.autosonvideo.logic.CameraHelpers;
import com.googlecode.javacv.FFmpegFrameRecorder;
import com.googlecode.javacv.cpp.opencv_core.IplImage;
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;
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 = 480;
private int finalImageWidth = 640;
private int finalImageHeight = 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 = 960;
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);
}
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(finalImageWidth, finalImageHeight,
IPL_DEPTH_8U, 2);
Log.i(LOG_TAG, "create yuvIplimage");
}
ffmpeg_link = CameraHelpers.getOutputMediaFile(
CameraHelpers.MEDIA_TYPE_VIDEO).toString();
Log.i(LOG_TAG, "ffmpeg_url: " + ffmpeg_link);
recorder = new FFmpegFrameRecorder(ffmpeg_link, finalImageWidth,
finalImageHeight, 1);
recorder.setFormat("mp4");
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 && 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't true when start this thread, it
// never get'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 && mCamera != null) {
isPreviewOn = true;
mCamera.startPreview();
}
}
public void stopPreview() {
if (isPreviewOn && mCamera != null) {
isPreviewOn = false;
mCamera.stopPreview();
}
}
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
/* get video data */
if (yuvIplimage != null && recording) {
// yuvIplimage.getByteBuffer().put(data);
final int startY = 640 * (480 - 360) / 2;
final int lenY = 640 * 360;
yuvIplimage.getByteBuffer().put(data, startY, lenY);
final int startVU = 640 * 480 + 320 * 2 * (240 - 180) / 2;
final int lenVU = 320 * 180 * 2;
yuvIplimage.getByteBuffer().put(data, startVU, lenVU);
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");
}
}
} -
FFMPEG "Invalid data found when processing input" MP4 to MP3
10 février 2014, par CubeBoy69I have a question. I'm converting videos from youtube to mp3. From 1000 files around 150 files this message is in the log.
/home/desktop/www/tmp/314629.mp4 : Invalid data found when processing input
The thing is it's only about 10% of the conversions. How can i solve this issue ?
I'm converting like this
ffmpeg -y -i /home/desktop/www/tmp/'.$random_flv_name.'.'.$download_format.' -vn -map_metadata -1 -ab 192k /home/desktop/www/audio/'.$yt_video_id.'/songtitle.mp3 -
FFMPEG "Invalid data found when processing input" MP4 to MP3 PHP
10 février 2014, par CubeBoy69I have a question. I'm converting videos from youtube to mp3. From 1000 files around 150 files this message is in the log.
/home/desktop/www/tmp/314629.mp4 : Invalid data found when processing input
The thing is it's only about 10% of the conversions. How can i solve this issue ?
I'm converting like this
ffmpeg -y -i /home/desktop/www/tmp/'.$random_flv_name.'.'.$download_format.' -vn -map_metadata -1 -ab 192k /home/desktop/www/audio/'.$yt_video_id.'/songtitle.mp3
Syndiquer tout le site
