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Contribute to a better visual interface
13 avril 2011MediaSPIP is based on a system of themes and templates. Templates define the placement of information on the page, and can be adapted to a wide range of uses. Themes define the overall graphic appearance of the site.
Anyone can submit a new graphic theme or template and make it available to the MediaSPIP community. -
Keeping control of your media in your hands
13 avril 2011, parThe vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...) -
Le plugin : Podcasts.
14 juillet 2010, parLe problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
Types de fichiers supportés dans les flux
Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)
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Sur d’autres sites (4206)
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Audio & Video not synchronized properly if i merged more videos in mp4parser
1er octobre 2013, par maniyaI have used mp4parser for merging video with dynamic pause and record video capture for max 6 second recording. In preview its working fine when recorded video with minimum pause/record, If i tried with more than 3 pause/record mean the last video file not get merged properly with audio.At the start of the video the sync is ok but at the end the video hanged and audio playing in screen for the remaining file duration about 1sec.
My Recording manager
public class RecordingManager implements Camera.ErrorCallback, MediaRecorder.OnErrorListener, MediaRecorder.OnInfoListener {
private static final String TAG = RecordingManager.class.getSimpleName();
private static final int FOCUS_AREA_RADIUS = 32;
private static final int FOCUS_MAX_VALUE = 1000;
private static final int FOCUS_MIN_VALUE = -1000;
private static final long MINIMUM_RECORDING_TIME = 2000;
private static final int MAXIMUM_RECORDING_TIME = 70 * 1000;
private static final long LOW_STORAGE_THRESHOLD = 5 * 1024 * 1024;
private static final long RECORDING_FILE_LIMIT = 100 * 1024 * 1024;
private boolean paused = true;
private MediaRecorder mediaRecorder = null;
private boolean recording = false;
private FrameLayout previewFrame = null;
private boolean mPreviewing = false;
// private TextureView mTextureView = null;
// private SurfaceTexture mSurfaceTexture = null;
// private boolean mSurfaceTextureReady = false;
//
private SurfaceView surfaceView = null;
private SurfaceHolder surfaceHolder = null;
private boolean surfaceViewReady = false;
private Camera camera = null;
private Camera.Parameters cameraParameters = null;
private CamcorderProfile camcorderProfile = null;
private int mOrientation = -1;
private OrientationEventListener mOrientationEventListener = null;
private long mStartRecordingTime;
private int mVideoWidth;
private int mVideoHeight;
private long mStorageSpace;
private Handler mHandler = new Handler();
// private Runnable mUpdateRecordingTimeTask = new Runnable() {
// @Override
// public void run() {
// long recordingTime = System.currentTimeMillis() - mStartRecordingTime;
// Log.d(TAG, String.format("Recording time:%d", recordingTime));
// mHandler.postDelayed(this, CLIP_GRAPH_UPDATE_INTERVAL);
// }
// };
private Runnable mStopRecordingTask = new Runnable() {
@Override
public void run() {
stopRecording();
}
};
private static RecordingManager mInstance = null;
private Activity currentActivity = null;
private String destinationFilepath = "";
private String snapshotFilepath = "";
public static RecordingManager getInstance(Activity activity, FrameLayout previewFrame) {
if (mInstance == null || mInstance.currentActivity != activity) {
mInstance = new RecordingManager(activity, previewFrame);
}
return mInstance;
}
private RecordingManager(Activity activity, FrameLayout previewFrame) {
currentActivity = activity;
this.previewFrame = previewFrame;
}
public int getVideoWidth() {
return this.mVideoWidth;
}
public int getVideoHeight() {
return this.mVideoHeight;
}
public void setDestinationFilepath(String filepath) {
this.destinationFilepath = filepath;
}
public String getDestinationFilepath() {
return this.destinationFilepath;
}
public void setSnapshotFilepath(String filepath) {
this.snapshotFilepath = filepath;
}
public String getSnapshotFilepath() {
return this.snapshotFilepath;
}
public void init(String videoPath, String snapshotPath) {
Log.v(TAG, "init.");
setDestinationFilepath(videoPath);
setSnapshotFilepath(snapshotPath);
if (!Utils.isExternalStorageAvailable()) {
showStorageErrorAndFinish();
return;
}
openCamera();
if (camera == null) {
showCameraErrorAndFinish();
return;
}
public void onResume() {
Log.v(TAG, "onResume.");
paused = false;
// Open the camera
if (camera == null) {
openCamera();
if (camera == null) {
showCameraErrorAndFinish();
return;
}
}
// Initialize the surface texture or surface view
// if (useTexture() && mTextureView == null) {
// initTextureView();
// mTextureView.setVisibility(View.VISIBLE);
// } else if (!useTexture() && mSurfaceView == null) {
initSurfaceView();
surfaceView.setVisibility(View.VISIBLE);
// }
// Start the preview
if (!mPreviewing) {
startPreview();
}
}
private void openCamera() {
Log.v(TAG, "openCamera");
try {
camera = Camera.open();
camera.setErrorCallback(this);
camera.setDisplayOrientation(90); // Since we only support portrait mode
cameraParameters = camera.getParameters();
} catch (RuntimeException e) {
e.printStackTrace();
camera = null;
}
}
private void closeCamera() {
Log.v(TAG, "closeCamera");
if (camera == null) {
Log.d(TAG, "Already stopped.");
return;
}
camera.setErrorCallback(null);
if (mPreviewing) {
stopPreview();
}
camera.release();
camera = null;
}
private void initSurfaceView() {
surfaceView = new SurfaceView(currentActivity);
surfaceView.getHolder().addCallback(new SurfaceViewCallback());
surfaceView.setVisibility(View.GONE);
FrameLayout.LayoutParams params = new LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT, Gravity.CENTER);
surfaceView.setLayoutParams(params);
Log.d(TAG, "add surface view to preview frame");
previewFrame.addView(surfaceView);
}
private void releaseSurfaceView() {
if (surfaceView != null) {
previewFrame.removeAllViews();
surfaceView = null;
surfaceHolder = null;
surfaceViewReady = false;
}
}
private void startPreview() {
// if ((useTexture() && !mSurfaceTextureReady) || (!useTexture() && !mSurfaceViewReady)) {
// return;
// }
Log.v(TAG, "startPreview.");
if (mPreviewing) {
stopPreview();
}
setCameraParameters();
resizePreview();
try {
// if (useTexture()) {
// mCamera.setPreviewTexture(mSurfaceTexture);
// } else {
camera.setPreviewDisplay(surfaceHolder);
// }
camera.startPreview();
mPreviewing = true;
} catch (Exception e) {
closeCamera();
e.printStackTrace();
Log.e(TAG, "startPreview failed.");
}
}
private void stopPreview() {
Log.v(TAG, "stopPreview");
if (camera != null) {
camera.stopPreview();
mPreviewing = false;
}
}
public void onPause() {
paused = true;
if (recording) {
stopRecording();
}
closeCamera();
// if (useTexture()) {
// releaseSurfaceTexture();
// } else {
releaseSurfaceView();
// }
}
private void setCameraParameters() {
if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_720P)) {
camcorderProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_720P);
} else if (CamcorderProfile.hasProfile(CamcorderProfile.QUALITY_480P)) {
camcorderProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_480P);
} else {
camcorderProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_HIGH);
}
mVideoWidth = camcorderProfile.videoFrameWidth;
mVideoHeight = camcorderProfile.videoFrameHeight;
camcorderProfile.fileFormat = MediaRecorder.OutputFormat.MPEG_4;
camcorderProfile.videoFrameRate = 30;
Log.v(TAG, "mVideoWidth=" + mVideoWidth + " mVideoHeight=" + mVideoHeight);
cameraParameters.setPreviewSize(mVideoWidth, mVideoHeight);
if (cameraParameters.getSupportedWhiteBalance().contains(Camera.Parameters.WHITE_BALANCE_AUTO)) {
cameraParameters.setWhiteBalance(Camera.Parameters.WHITE_BALANCE_AUTO);
}
if (cameraParameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO)) {
cameraParameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
}
cameraParameters.setRecordingHint(true);
cameraParameters.set("cam_mode", 1);
camera.setParameters(cameraParameters);
cameraParameters = camera.getParameters();
camera.setDisplayOrientation(90);
android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
Log.d(TAG, info.orientation + " degree");
}
private void resizePreview() {
Log.d(TAG, String.format("Video size:%d|%d", mVideoWidth, mVideoHeight));
Point optimizedSize = getOptimizedPreviewSize(mVideoWidth, mVideoHeight);
Log.d(TAG, String.format("Optimized size:%d|%d", optimizedSize.x, optimizedSize.y));
ViewGroup.LayoutParams params = (ViewGroup.LayoutParams) previewFrame.getLayoutParams();
params.width = optimizedSize.x;
params.height = optimizedSize.y;
previewFrame.setLayoutParams(params);
}
public void setOrientation(int ori) {
this.mOrientation = ori;
}
public void setOrientationEventListener(OrientationEventListener listener) {
this.mOrientationEventListener = listener;
}
public Camera getCamera() {
return camera;
}
@SuppressWarnings("serial")
public void setFocusArea(float x, float y) {
if (camera != null) {
int viewWidth = surfaceView.getWidth();
int viewHeight = surfaceView.getHeight();
int focusCenterX = FOCUS_MAX_VALUE - (int) (x / viewWidth * (FOCUS_MAX_VALUE - FOCUS_MIN_VALUE));
int focusCenterY = FOCUS_MIN_VALUE + (int) (y / viewHeight * (FOCUS_MAX_VALUE - FOCUS_MIN_VALUE));
final int left = focusCenterY - FOCUS_AREA_RADIUS < FOCUS_MIN_VALUE ? FOCUS_MIN_VALUE : focusCenterY - FOCUS_AREA_RADIUS;
final int top = focusCenterX - FOCUS_AREA_RADIUS < FOCUS_MIN_VALUE ? FOCUS_MIN_VALUE : focusCenterX - FOCUS_AREA_RADIUS;
final int right = focusCenterY + FOCUS_AREA_RADIUS > FOCUS_MAX_VALUE ? FOCUS_MAX_VALUE : focusCenterY + FOCUS_AREA_RADIUS;
final int bottom = focusCenterX + FOCUS_AREA_RADIUS > FOCUS_MAX_VALUE ? FOCUS_MAX_VALUE : focusCenterX + FOCUS_AREA_RADIUS;
Camera.Parameters params = camera.getParameters();
params.setFocusAreas(new ArrayList() {
{
add(new Camera.Area(new Rect(left, top, right, bottom), 1000));
}
});
camera.setParameters(params);
camera.autoFocus(new AutoFocusCallback() {
@Override
public void onAutoFocus(boolean success, Camera camera) {
Log.d(TAG, "onAutoFocus");
}
});
}
}
public void startRecording(String destinationFilepath) {
if (!recording) {
updateStorageSpace();
setDestinationFilepath(destinationFilepath);
if (mStorageSpace <= LOW_STORAGE_THRESHOLD) {
Log.v(TAG, "Storage issue, ignore the start request");
Toast.makeText(currentActivity, "Storage issue, ignore the recording request", Toast.LENGTH_LONG).show();
return;
}
if (!prepareMediaRecorder()) {
Toast.makeText(currentActivity, "prepareMediaRecorder failed.", Toast.LENGTH_LONG).show();
return;
}
Log.d(TAG, "Successfully prepare media recorder.");
try {
mediaRecorder.start();
} catch (RuntimeException e) {
Log.e(TAG, "MediaRecorder start failed.");
releaseMediaRecorder();
return;
}
mStartRecordingTime = System.currentTimeMillis();
if (mOrientationEventListener != null) {
mOrientationEventListener.disable();
}
recording = true;
}
}
public void stopRecording() {
if (recording) {
if (!paused) {
// Capture at least 1 second video
long currentTime = System.currentTimeMillis();
if (currentTime - mStartRecordingTime < MINIMUM_RECORDING_TIME) {
mHandler.postDelayed(mStopRecordingTask, MINIMUM_RECORDING_TIME - (currentTime - mStartRecordingTime));
return;
}
}
if (mOrientationEventListener != null) {
mOrientationEventListener.enable();
}
// mHandler.removeCallbacks(mUpdateRecordingTimeTask);
try {
mediaRecorder.setOnErrorListener(null);
mediaRecorder.setOnInfoListener(null);
mediaRecorder.stop(); // stop the recording
Toast.makeText(currentActivity, "Video file saved.", Toast.LENGTH_LONG).show();
long stopRecordingTime = System.currentTimeMillis();
Log.d(TAG, String.format("stopRecording. file:%s duration:%d", destinationFilepath, stopRecordingTime - mStartRecordingTime));
// Calculate the duration of video
MediaMetadataRetriever mmr = new MediaMetadataRetriever();
mmr.setDataSource(this.destinationFilepath);
String _length = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);
if (_length != null) {
Log.d(TAG, String.format("clip duration:%d", Long.parseLong(_length)));
}
// Taking the snapshot of video
Bitmap snapshot = ThumbnailUtils.createVideoThumbnail(this.destinationFilepath, Thumbnails.MICRO_KIND);
try {
FileOutputStream out = new FileOutputStream(this.snapshotFilepath);
snapshot.compress(Bitmap.CompressFormat.JPEG, 70, out);
out.close();
} catch (Exception e) {
e.printStackTrace();
}
// mActivity.showPlayButton();
} catch (RuntimeException e) {
e.printStackTrace();
Log.e(TAG, e.getMessage());
// if no valid audio/video data has been received when stop() is
// called
} finally {
//
releaseMediaRecorder(); // release the MediaRecorder object
if (!paused) {
cameraParameters = camera.getParameters();
}
recording = false;
}
}
}
public void setRecorderOrientation(int orientation) {
// For back camera only
if (orientation != -1) {
Log.d(TAG, "set orientationHint:" + (orientation + 135) % 360 / 90 * 90);
mediaRecorder.setOrientationHint((orientation + 135) % 360 / 90 * 90);
}else {
Log.d(TAG, "not set orientationHint to mediaRecorder");
}
}
private boolean prepareMediaRecorder() {
mediaRecorder = new MediaRecorder();
camera.unlock();
mediaRecorder.setCamera(camera);
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mediaRecorder.setProfile(camcorderProfile);
mediaRecorder.setMaxDuration(MAXIMUM_RECORDING_TIME);
mediaRecorder.setOutputFile(this.destinationFilepath);
try {
mediaRecorder.setMaxFileSize(Math.min(RECORDING_FILE_LIMIT, mStorageSpace - LOW_STORAGE_THRESHOLD));
} catch (RuntimeException exception) {
}
setRecorderOrientation(mOrientation);
if (!useTexture()) {
mediaRecorder.setPreviewDisplay(surfaceHolder.getSurface());
}
try {
mediaRecorder.prepare();
} catch (IllegalStateException e) {
releaseMediaRecorder();
return false;
} catch (IOException e) {
releaseMediaRecorder();
return false;
}
mediaRecorder.setOnErrorListener(this);
mediaRecorder.setOnInfoListener(this);
return true;
}
private void releaseMediaRecorder() {
if (mediaRecorder != null) {
mediaRecorder.reset(); // clear recorder configuration
mediaRecorder.release(); // release the recorder object
mediaRecorder = null;
camera.lock(); // lock camera for later use
}
}
private Point getOptimizedPreviewSize(int videoWidth, int videoHeight) {
Display display = currentActivity.getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
Point optimizedSize = new Point();
optimizedSize.x = size.x;
optimizedSize.y = (int) ((float) videoWidth / (float) videoHeight * size.x);
return optimizedSize;
}
private void showCameraErrorAndFinish() {
DialogInterface.OnClickListener buttonListener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
currentActivity.finish();
}
};
new AlertDialog.Builder(currentActivity).setCancelable(false)
.setTitle("Camera error")
.setMessage("Cannot connect to the camera.")
.setNeutralButton("OK", buttonListener)
.show();
}
private void showStorageErrorAndFinish() {
DialogInterface.OnClickListener buttonListener = new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
currentActivity.finish();
}
};
new AlertDialog.Builder(currentActivity).setCancelable(false)
.setTitle("Storage error")
.setMessage("Cannot read external storage.")
.setNeutralButton("OK", buttonListener)
.show();
}
private void updateStorageSpace() {
mStorageSpace = getAvailableSpace();
Log.v(TAG, "updateStorageSpace mStorageSpace=" + mStorageSpace);
}
private long getAvailableSpace() {
String state = Environment.getExternalStorageState();
Log.d(TAG, "External storage state=" + state);
if (Environment.MEDIA_CHECKING.equals(state)) {
return -1;
}
if (!Environment.MEDIA_MOUNTED.equals(state)) {
return -1;
}
File directory = currentActivity.getExternalFilesDir("vine");
directory.mkdirs();
if (!directory.isDirectory() || !directory.canWrite()) {
return -1;
}
try {
StatFs stat = new StatFs(directory.getAbsolutePath());
return stat.getAvailableBlocks() * (long) stat.getBlockSize();
} catch (Exception e) {
Log.i(TAG, "Fail to access external storage", e);
}
return -1;
}
private boolean useTexture() {
return false;
// return Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1;
}
private class SurfaceViewCallback implements SurfaceHolder.Callback {
@Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
Log.v(TAG, "surfaceChanged. width=" + width + ". height=" + height);
}
@Override
public void surfaceCreated(SurfaceHolder holder) {
Log.v(TAG, "surfaceCreated");
surfaceViewReady = true;
surfaceHolder = holder;
startPreview();
}
@Override
public void surfaceDestroyed(SurfaceHolder holder) {
Log.d(TAG, "surfaceDestroyed");
surfaceViewReady = false;
}
}
@Override
public void onError(int error, Camera camera) {
Log.e(TAG, "Camera onError. what=" + error + ".");
if (error == Camera.CAMERA_ERROR_SERVER_DIED) {
} else if (error == Camera.CAMERA_ERROR_UNKNOWN) {
}
}
@Override
public void onInfo(MediaRecorder mr, int what, int extra) {
if (what == MediaRecorder.MEDIA_RECORDER_INFO_MAX_DURATION_REACHED) {
stopRecording();
} else if (what == MediaRecorder.MEDIA_RECORDER_INFO_MAX_FILESIZE_REACHED) {
stopRecording();
Toast.makeText(currentActivity, "Size limit reached", Toast.LENGTH_LONG).show();
}
}
@Override
public void onError(MediaRecorder mr, int what, int extra) {
Log.e(TAG, "MediaRecorder onError. what=" + what + ". extra=" + extra);
if (what == MediaRecorder.MEDIA_RECORDER_ERROR_UNKNOWN) {
stopRecording();
}
}
}VideoUtils
public class VideoUtils {
private static final String TAG = VideoUtils.class.getSimpleName();
static double[] matrix = new double[] { 0.0, 1.0, 0.0, -1.0, 0.0, 0.0, 0.0,
0.0, 1.0 };
public static boolean MergeFiles(String speratedDirPath,
String targetFileName) {
File videoSourceDirFile = new File(speratedDirPath);
String[] videoList = videoSourceDirFile.list();
List<track> videoTracks = new LinkedList<track>();
List<track> audioTracks = new LinkedList<track>();
for (String file : videoList) {
Log.d(TAG, "source files" + speratedDirPath
+ File.separator + file);
try {
FileChannel fc = new FileInputStream(speratedDirPath
+ File.separator + file).getChannel();
Movie movie = MovieCreator.build(fc);
for (Track t : movie.getTracks()) {
if (t.getHandler().equals("soun")) {
audioTracks.add(t);
}
if (t.getHandler().equals("vide")) {
videoTracks.add(t);
}
}
} catch (FileNotFoundException e) {
e.printStackTrace();
return false;
} catch (IOException e) {
e.printStackTrace();
return false;
}
}
Movie result = new Movie();
try {
if (audioTracks.size() > 0) {
result.addTrack(new AppendTrack(audioTracks
.toArray(new Track[audioTracks.size()])));
}
if (videoTracks.size() > 0) {
result.addTrack(new AppendTrack(videoTracks
.toArray(new Track[videoTracks.size()])));
}
IsoFile out = new DefaultMp4Builder().build(result);
FileChannel fc = new RandomAccessFile(
String.format(targetFileName), "rw").getChannel();
Log.d(TAG, "target file:" + targetFileName);
TrackBox tb = out.getMovieBox().getBoxes(TrackBox.class).get(1);
TrackHeaderBox tkhd = tb.getTrackHeaderBox();
double[] b = tb.getTrackHeaderBox().getMatrix();
tkhd.setMatrix(matrix);
fc.position(0);
out.getBox(fc);
fc.close();
for (String file : videoList) {
File TBRFile = new File(speratedDirPath + File.separator + file);
TBRFile.delete();
}
boolean a = videoSourceDirFile.delete();
Log.d(TAG, "try to delete dir:" + a);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
return false;
}
return true;
}
public static boolean clearFiles(String speratedDirPath) {
File videoSourceDirFile = new File(speratedDirPath);
if (videoSourceDirFile != null
&& videoSourceDirFile.listFiles() != null) {
File[] videoList = videoSourceDirFile.listFiles();
for (File video : videoList) {
video.delete();
}
videoSourceDirFile.delete();
}
return true;
}
public static int createSnapshot(String videoFile, int kind, String snapshotFilepath) {
return 0;
};
public static int createSnapshot(String videoFile, int width, int height, String snapshotFilepath) {
return 0;
}
}
</track></track></track></track>my reference code project link is
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Revision 2b426969c3 : Simplify RDMULT and RDDIV derivation Don't divide RDMULT and RDDIV by 100 when
26 septembre 2013, par Guillaume MartresChanged Paths :
Modify /vp9/encoder/vp9_rdopt.c
Simplify RDMULT and RDDIV derivationDon't divide RDMULT and RDDIV by 100 when RDMULT > 1000. This was
probably done to avoid overflow when the rd cost was stored in a 32 bits
integer but this is not the case anymore. This change will make it easier
to support multiple quantizers per frame.derf compression gain at speed 0 : 0.037%
Change-Id : Ibeeb9b7cfa1a132a7af41bc90fc07a3bba0857f6
-
Evolution #3071 (Nouveau) : Performance boucle DATA sur CSV
9 octobre 2013, par lrt rlnIl semble que l’analyse CSV avant passage dans la boucle DATA pose de gros soucis de perf. Le temps d’exécution passe rapidement à 2/3 minutes (avec gros set_time_limit) de traitement sur des fichiers >10Mo. A titre comparatif un simple fgetcsv avec un while (($data = fgetcsv($handle, 1000, ",")) est 50 fois plus rapide en exécution que le traitement par la boucle DATA. Il y a sans doute moyen d’optimiser /inc/csv.php pour éviter un plantage assez systèmatique de PHP sur bouclage de fichiers de + 5000 lignes.
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