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Exemple de boutons d’action pour une collection collaborative
27 février 2013, par
Mis à jour : Mars 2013
Langue : français
Type : Image
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Exemple de boutons d’action pour une collection personnelle
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Langue : English
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Collections - Formulaire de création rapide
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Autres articles (64)
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Gestion générale des documents
13 mai 2011, parMédiaSPIP ne modifie jamais le document original mis en ligne.
Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...) -
MediaSPIP v0.2
21 juin 2013, parMediaSPIP 0.2 est la première version de MediaSPIP stable.
Sa date de sortie officielle est le 21 juin 2013 et est annoncée ici.
Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
Comme pour la version précédente, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...) -
Mise à disposition des fichiers
14 avril 2011, parPar défaut, lors de son initialisation, MediaSPIP ne permet pas aux visiteurs de télécharger les fichiers qu’ils soient originaux ou le résultat de leur transformation ou encodage. Il permet uniquement de les visualiser.
Cependant, il est possible et facile d’autoriser les visiteurs à avoir accès à ces documents et ce sous différentes formes.
Tout cela se passe dans la page de configuration du squelette. Il vous faut aller dans l’espace d’administration du canal, et choisir dans la navigation (...)
Sur d’autres sites (9284)
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checkasm : aacencdsp : Actually test nonzero values in quant_bands
29 janvier, par Martin Storsjöcheckasm : aacencdsp : Actually test nonzero values in quant_bands
Previously, we read elements from ff_aac_pow34sf_tab ; however
that table is initialized to zero ; one needs to call
ff_aac_float_common_init() to make sure that the table is
initialized.However, given the range of the input values, a large number of
entries in ff_aac_pow34sf_tab would give results outside of the
range for signed 32 bit integers. As the largest aac_cb_maxval
entry is 16, it seems more reasonable to produce values within
an order of mangitude of that value.(When hitting INT_MIN, implementations may end up with different
results depending on whether the value is negated as a float or
as an int. This corner case is irrelevant in practice as this
is way outside of the expected value range here.)Coincidentally, this fixes linking checkasm with Apple's older
linker. (In Xcode 15, Apple switched to a new linker. The one in
older toolchains seems to have a bug where it won't figure out to
load object files from a static library, if the only symbol
referenced in the object file is a "common" symbol, i.e. one for
a zero-initialized variable. This issue can also be reproduced with
newer Apple toolchains by passing -Wl,-ld_classic to the linker.)Signed-off-by : Martin Storsjö <martin@martin.st>
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FFMPEG : i need audio channels 7 & 8 to be the main audio track for a video
10 avril 2013, par lo_fyeI have a video with 8 channels of audio.
I need tracks 7 (Left Stereo) and 8 (Right Stereo) to be the audio for the video (which I'm converting to flv).
I've tried playing with
-filter_complexand thejoin,amix, andamergefilters, as well as the-mapparameter, but I can't seem to find the right combination of values :-/Output :
/usr/local/bin/ffmpeg-1.0/bin/ffmpeg -i '/folder/video_name.mov' -f 'flv' \
-s '320x240' -b '250k' -aspect '4:3' -ac 1 -ab '64k' -ar '22050' -y \
/folder/video_name.flv
ffmpeg version N-46241-g09ea482 Copyright (c) 2000-2012 the FFmpeg developers
built on Nov 5 2012 07:33:09 with gcc 4.1.2 (GCC) 20080704 (Red Hat 4.1.2-46)
configuration: --prefix=/usr/local/bin/ffmpeg-1.0
libavutil 52. 1.100 / 52. 1.100
libavcodec 54. 70.100 / 54. 70.100
libavformat 54. 35.100 / 54. 35.100
libavdevice 54. 3.100 / 54. 3.100
libavfilter 3. 21.105 / 3. 21.105
libswscale 2. 1.101 / 2. 1.101
libswresample 0. 16.100 / 0. 16.100
Guessed Channel Layout for Input Stream #0.1 : mono
Guessed Channel Layout for Input Stream #0.2 : mono
Guessed Channel Layout for Input Stream #0.3 : mono
Guessed Channel Layout for Input Stream #0.4 : mono
Guessed Channel Layout for Input Stream #0.5 : mono
Guessed Channel Layout for Input Stream #0.6 : mono
Guessed Channel Layout for Input Stream #0.7 : mono
Guessed Channel Layout for Input Stream #0.8 : mono
Guessed Channel Layout for Input Stream #0.9 : mono
Guessed Channel Layout for Input Stream #0.10 : mono
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/folder/video_name.mov':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
creation_time : 2013-04-03 19:45:26
Duration: 00:00:39.03, start: 0.000000, bitrate: 122149 kb/s
Stream #0:0(eng): Video: prores (apch / 0x68637061), yuv422p10le, 1920x1080, 110585 kb/s, SAR 1:1 DAR 16:9, 23.98 fps, 23.98 tbr, 23976 tbn, 23976 tbc
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
timecode : 00:59:53:00
Stream #0:1(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:2(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:3(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:4(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:5(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:6(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:7(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:8(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:9(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:10(eng): Audio: pcm_s24le (in24 / 0x34326E69), 48000 Hz, mono, s32, 1152 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream #0:11(eng): Data: none (tmcd / 0x64636D74)
Metadata:
creation_time : 2013-04-03 19:45:30
handler_name : Apple Alias Data Handler
timecode : 00:59:53:00
Please use -b:a or -b:v, -b is ambiguous
Output #0, flv, to '/folder/video_name.flv':
Metadata:
major_brand : qt
minor_version : 537199360
compatible_brands: qt
encoder : Lavf54.35.100
Stream #0:0(eng): Video: flv1 ([2][0][0][0] / 0x0002), yuv420p, 320x240 [SAR 1:1 DAR 4:3], q=2-31, 250 kb/s, 1k tbn, 23.98 tbc
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
timecode : 00:59:53:00
Stream #0:1(eng): Audio: adpcm_swf ([1][0][0][0] / 0x0001), 22050 Hz, mono, s16, 88 kb/s
Metadata:
creation_time : 2013-04-03 19:45:26
handler_name : Apple Alias Data Handler
Stream mapping:
Stream #0:0 -> #0:0 (prores -> flv)
Stream #0:1 -> #0:1 (pcm_s24le -> adpcm_swf)
Press [q] to stop, [?] for help
frame= 33 fps=0.0 q=2.0 size= 108kB time=00:00:01.99 bitrate= 442.4kbits/s
frame= 66 fps= 65 q=2.0 size= 225kB time=00:00:02.97 bitrate= 619.0kbits/s
frame= 99 fps= 65 q=2.0 size= 341kB time=00:00:04.96 bitrate= 561.8kbits/s
frame= 136 fps= 67 q=2.0 size= 400kB time=00:00:05.99 bitrate= 547.5kbits/s
frame= 177 fps= 70 q=3.0 size= 482kB time=00:00:07.98 bitrate= 494.3kbits/s
frame= 210 fps= 69 q=3.7 size= 590kB time=00:00:08.96 bitrate= 539.7kbits/s
frame= 240 fps= 68 q=6.3 size= 660kB time=00:00:10.01 bitrate= 539.7kbits/s
frame= 264 fps= 65 q=6.7 size= 719kB time=00:00:11.01 bitrate= 535.2kbits/s
frame= 288 fps= 63 q=8.4 size= 772kB time=00:00:12.02 bitrate= 526.1kbits/s
frame= 312 fps= 62 q=15.4 size= 829kB time=00:00:13.65 bitrate= 497.4kbits/s
frame= 336 fps= 60 q=10.4 size= 875kB time=00:00:14.02 bitrate= 511.1kbits/s
frame= 360 fps= 59 q=10.6 size= 916kB time=00:00:15.01 bitrate= 499.9kbits/s
frame= 383 fps= 58 q=17.8 size= 957kB time=00:00:15.97 bitrate= 490.6kbits/s
frame= 411 fps= 58 q=6.5 size= 1008kB time=00:00:17.97 bitrate= 459.3kbits/s
frame= 437 fps= 57 q=9.7 size= 1046kB time=00:00:18.99 bitrate= 451.3kbits/s
frame= 460 fps= 57 q=7.7 size= 1086kB time=00:00:20.01 bitrate= 444.6kbits/s
frame= 489 fps= 57 q=11.3 size= 1144kB time=00:00:20.99 bitrate= 446.3kbits/s
frame= 512 fps= 56 q=10.3 size= 1182kB time=00:00:22.01 bitrate= 439.8kbits/s
frame= 535 fps= 55 q=21.5 size= 1225kB time=00:00:22.98 bitrate= 436.7kbits/s
frame= 564 fps= 55 q=18.3 size= 1280kB time=00:00:24.00 bitrate= 436.8kbits/s
frame= 587 fps= 55 q=8.5 size= 1311kB time=00:00:24.98 bitrate= 429.7kbits/s
frame= 610 fps= 54 q=11.9 size= 1349kB time=00:00:26.00 bitrate= 424.9kbits/s
frame= 636 fps= 54 q=7.5 size= 1383kB time=00:00:26.98 bitrate= 419.8kbits/s
frame= 659 fps= 54 q=9.6 size= 1421kB time=00:00:28.00 bitrate= 415.6kbits/s
frame= 683 fps= 54 q=20.0 size= 1471kB time=00:00:29.02 bitrate= 415.1kbits/s
frame= 711 fps= 54 q=6.4 size= 1518kB time=00:00:30.00 bitrate= 414.5kbits/s
frame= 742 fps= 54 q=6.2 size= 1558kB time=00:00:31.02 bitrate= 411.5kbits/s
frame= 774 fps= 54 q=2.5 size= 1601kB time=00:00:33.01 bitrate= 397.1kbits/s
frame= 816 fps= 55 q=2.0 size= 1632kB time=00:00:34.50 bitrate= 387.6kbits/s
frame= 861 fps= 56 q=2.0 size= 1670kB time=00:00:35.99 bitrate= 380.1kbits/s
frame= 905 fps= 57 q=2.0 size= 1706kB time=00:00:38.03 bitrate= 367.4kbits/s
frame= 936 fps= 58 q=2.0 Lsize= 1730kB time=00:00:39.05 bitrate= 362.8kbits/s
video:1278kB audio:423kB subtitle:0 global headers:0kB muxing overhead 1.654557% -
Rotation on Video frame image makes video quality low and becomes green ffmpeg opencv
21 novembre 2013, par bindalI am working on one application in which i have to record video on touch which includes pause recording so , i am using FFmpegFrameRecorder for that
But when i am recording video with rear camera then in onpreviewframe
i am getting yuvIplImage in portrait mode that is correct but when i
am recording with front camera in portrait mode then in onPreviewframe
i am getting image upside down , so my half, so from that result my
half video is showing in correct portrait mode and remaining half
video id showing upside down, so i am applying rotation on yuvIplImage
when recording from front cameraHere is my onPreviewFrame Method
@Override
public void onPreviewFrame(byte[] data, Camera camera) {
long frameTimeStamp = 0L;
if (mAudioTimestamp == 0L && firstTime > 0L)
frameTimeStamp = 1000L * (System.currentTimeMillis() - firstTime);
else if (mLastAudioTimestamp == mAudioTimestamp)
frameTimeStamp = mAudioTimestamp + frameTime;
else {
long l2 = (System.nanoTime() - mAudioTimeRecorded) / 1000L;
frameTimeStamp = l2 + mAudioTimestamp;
mLastAudioTimestamp = mAudioTimestamp;
}
synchronized (mVideoRecordLock) {
if (recording && rec && lastSavedframe != null
&& lastSavedframe.getFrameBytesData() != null
&& yuvIplImage != null) {
mVideoTimestamp += frameTime;
if (lastSavedframe.getTimeStamp() > mVideoTimestamp)
mVideoTimestamp = lastSavedframe.getTimeStamp();
try {
yuvIplImage.getByteBuffer().put(
lastSavedframe.getFrameBytesData());
videoRecorder.setTimestamp(lastSavedframe
.getTimeStamp());
// if (defaultCameraId == 1) {
// CvSize size = new CvSize(yuvIplImage.height(),
// yuvIplImage.width());
// IplImage yuvIplImage2 = opencv_core.cvCreateImage(
// size, yuvIplImage.depth(),
// yuvIplImage.nChannels());
//
// videoRecorder.record(yuvIplImage2);
// } else {
// }
if (defaultCameraId == 1) {
yuvIplImage = rotate(yuvIplImage, 270);
videoRecorder.record(yuvIplImage);
}else
{
videoRecorder.record(yuvIplImage);
}
// else
// opencv_core.cvTranspose(yuvIplImage, yuvIplImage);
} catch (com.googlecode.javacv.FrameRecorder.Exception e) {
e.printStackTrace();
}
}
lastSavedframe = new SavedFrames(data, frameTimeStamp);
}
}
}Here is rotation function
public static IplImage rotate(IplImage image, double angle) {
IplImage copy = opencv_core.cvCloneImage(image);
IplImage rotatedImage = opencv_core.cvCreateImage(
opencv_core.cvGetSize(copy), copy.depth(), copy.nChannels());
CvMat mapMatrix = opencv_core.cvCreateMat(2, 3, opencv_core.CV_32FC1);
// Define Mid Point
CvPoint2D32f centerPoint = new CvPoint2D32f();
centerPoint.x(copy.width() / 2);
centerPoint.y(copy.height() / 2);
// Get Rotational Matrix
opencv_imgproc.cv2DRotationMatrix(centerPoint, angle, 1.0, mapMatrix);
// opencv_core.cvReleaseImage(copy);
// Rotate the Image
opencv_imgproc.cvWarpAffine(copy, rotatedImage, mapMatrix,
opencv_imgproc.CV_INTER_CUBIC
+ opencv_imgproc.CV_WARP_FILL_OUTLIERS,
opencv_core.cvScalarAll(170));
opencv_core.cvReleaseImage(copy);
opencv_core.cvReleaseMat(mapMatrix);
return rotatedImage;
}But Final output of video makes half of the video green
Thanks in advance
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