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GetID3 - Boutons supplémentaires
9 avril 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Image
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Core Media Video
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Mis à jour : Juin 2013
Langue : français
Type : Video
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The pirate bay depuis la Belgique
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Mis à jour : Avril 2013
Langue : français
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Bug de détection d’ogg
22 mars 2013, par
Mis à jour : Avril 2013
Langue : français
Type : Video
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Exemple de boutons d’action pour une collection collaborative
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Mis à jour : Mars 2013
Langue : français
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Exemple de boutons d’action pour une collection personnelle
27 février 2013, par
Mis à jour : Février 2013
Langue : English
Type : Image
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Sur d’autres sites (3486)
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about FFMPEG stream overlaying an object
1er février 2014, par user3261087hello i have one question about blocking or overlaying an object in a live stream wich is working trough FFmpeg
i have my own stream server installed and sofar running fine with FFMpeG ,
but im stuck on a problem.the problem is when there is a soccer event on the channel i got serial nummer in my stream, i want to overlay this or block this can someone help me because i know that is possible
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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
-
Dreamcast Development Desktop
28 mars 2011, par Multimedia Mike — Sega DreamcastSome people are curious about what kind of equipment is required to program a Sega Dreamcast. This is my setup :
It’s a bit overcomplicated. The only piece in that picture which doesn’t play a role in the Dreamcast development process is the scanner. The Eee PC does the heavy lifting of development (i.e., text editing and cross compilation) and uploads to the Dreamcast via a special serial cable. Those are the most essential parts and are really the only pieces necessary for a lot of algorithmic stuff (things that can be validated via a serial console). But then I have to go up a level where I output video. That’s where things get messy.
The Mac Mini and giant monitor really just act as a glorified TV in this case. Ideally, it will be more than that. The DC outputs audio and video via composite cables to a Canopus DV capture bridge. That’s connected via FireWire to the external hard drive underneath the Mac Mini, which is connected to the Mac. Adobe Premiere Pro handles the DV capture / display.
One day I hope to have something worthwhile to capture.
Syndiquer tout le site
