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La conservation du net art au musée. Les stratégies à l’œuvre
26 mai 2011
Mis à jour : Juillet 2013
Langue : français
Type : Texte
Autres articles (74)
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Des sites réalisés avec MediaSPIP
2 mai 2011, parCette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page. -
Participer à sa traduction
10 avril 2011Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
Actuellement MediaSPIP n’est disponible qu’en français et (...) -
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 (...)
Sur d’autres sites (14347)
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How can I use FFMpeg to convert videos saved in gallery to mp4 no matter what extension is chose ?
7 juin 2014, par user3587194Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Video.Media.EXTERNAL_CONTENT_URI);
intent.setType("video/*");
startActivityForResult(intent, VIDEO_SELECTED_GALLERY);
}
}, expires);
}
});
sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, Uri.parse("file://" +Environment.getExternalStorageDirectory())));Here is my OnActivityResults this is after the Intent happens when i choose a video from the selected gallery. Im trying to implement in FFMpeg command during the onActivityResult so i can be able to convert all video files to mp4 when choosing a video from the gallery
else if (requestCode == VIDEO_SELECTED_GALLERY) {
if (resultCode == RESULT_OK) {
try {
selectedVideo = intent.getData();
if (selectedVideo != null) {
try {
String[] filePathColumn = {
MediaStore.Video.VideoColumns.DATA,
MediaStore.Video.VideoColumns.SIZE,
MediaStore.Video.VideoColumns.DURATION,
MediaStore.Video.VideoColumns.MIME_TYPE
};
Cursor cursor = getContentResolver().query(selectedVideo, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex0 = cursor.getColumnIndex(filePathColumn[0]);
int columnIndex1 = cursor.getColumnIndex(filePathColumn[1]);
int columnIndex2 = cursor.getColumnIndex(filePathColumn[2]);
int columnIndex3 = cursor.getColumnIndex(filePathColumn[3]);
if (cursor.getString(columnIndex3) != null && cursor.getString(columnIndex3).compareTo("")!=0 && cursor.getString(columnIndex3).contains("wmv")) {
displayErrorAlert("Upload Alert", "You cannot upload .wmv format videos. Sorry, that file format is not supported at this time");
}
else {
float lduration = 0.0f;
String lpath = "";
if(cursor.getString(columnIndex1) != null && cursor.getString(columnIndex1).compareTo("")!=0) {
lsize = Long.parseLong(cursor.getString(columnIndex1));
size_of_file = lsize;
}
if (cursor.getString(columnIndex2) != null && cursor.getString(columnIndex2).compareTo("")!=0) {
lduration = Float.parseFloat(cursor.getString(columnIndex2));
}
if(cursor.getString(columnIndex0) != null && cursor.getString(columnIndex0).compareTo("")!= 0) {
lpath = cursor.getString(columnIndex0);
lduration = lduration / 1000;
if (lduration > 31.00) {
displayErrorAlert("Time Limit", "Duration of video is more than 30 seconds");
}
else {
path = lpath;
getVideoFileSize();
if (lsize > 26214400 && lsize < FILE_SIZE) {
AlertDialog.Builder confirm = new AlertDialog.Builder(this);
confirm.setTitle("Warning: Long Upload Time");
confirm.setMessage("This video is larger than 25MB. Uploading may take more than 5 minutes, depending on your internet speed.");
confirm.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick (DialogInterface dialog, int which) {
if (mConnectionDetector.isConnectedToInternet()) {
// TODO Auto-generated method
new S3PutObjectTask(VideoPlay.this, s3Client, code, path, size_of_file, securityCode).execute();
}
else {
mTosty.showToast(getResources().getString(R.string.internetIssue));
}
}
});
confirm.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick (DialogInterface dialog, int which) {
dialog.dismiss();
}
});
confirm.show().show();
}
else {
if (mConnectionDetector.isConnectedToInternet()) {
new S3PutObjectTask(VideoPlay.this, s3Client, code, path, size_of_file, securityCode).execute();
}
else {
mTosty.showToast(getResources().getString(R.string.internetIssue));
}
}
}
}
else {
if (lsize > FILE_SIZE) {
displayErrorAlert("File Size Too Big", "You can not download greater than 50mb.");
}
else if (lsize > 26214400 && lsize < FILE_SIZE) {
AlertDialog.Builder confirm = new AlertDialog.Builder(this);
confirm.setTitle("Warning: Long Download Time");
confirm.setMessage("This video is larger than 25MB. Downloading may take more than 5 minutes, depending on your internet speed.");
confirm.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
VideoDownloaderTaskForAlbum mTask =new VideoDownloaderTaskForAlbum(VideoPlay.this,VideoPlay.this,lsize,selectedVideo);
mTask.execute(selectedVideo);
dialog.dismiss();
}
});
confirm.setNegativeButton("No", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
confirm.show().show();
}
else {
VideoDownloaderTaskForAlbum mTask =new VideoDownloaderTaskForAlbum(VideoPlay.this,VideoPlay.this,lsize,selectedVideo);
mTask.execute(selectedVideo);
}
}
}
}
catch(Exception e) {
e.printStackTrace();
}
}
else {
displayErrorAlert("Wrong File", "Wrong file Path");
}
}
catch (Exception e) {
Log.i("tag", e.getMessage());
}
} else if (resultCode == RESULT_CANCELED) {
mTosty.showToast("Result Canceled");
}
}
} -
Minimal configure flags to configure png files to mp4 and gif ?
24 avril 2012, par JonaI'm trying to configure and build ffmpeg only with the most minimum libraries needed to read set of images of png type and convert those images into a movie. The movie output support I need are gif and mp4.
I was able to get mp4 output but gif output I can't get it to work just crashes or exist without errors.
Could not find input stream matching output stream #1.0
There might be some extra configure flags that can be removed too...
Here is my configure :
./configure \
--target-os=linux \
--prefix=$PREFIX \
--enable-cross-compile \
--extra-libs="-lgcc" \
--arch=arm \
--enable-gpl \
--enable-version3 \
--enable-nonfree \
--sysroot=$NDK_SYSROOT \
--extra-cflags="-I../x264 -Ivideokit -O3 -fpic -DANDROID -DHAVE_SYS_UIO_H=1 -Dipv6mr_interface=ipv6mr_ifindex -fasm -Wno-psabi -fno-short-enums -fno-strict-aliasing -finline-limit=300 $OPTIMIZE_CFLAGS " \
--extra-ldflags="-L../x264 -Wl,-rpath-link=/usr/lib -L/usr/lib -nostdlib -lc -lm -ldl -llog" \
--disable-shared \
--enable-static \
--enable-stripping \
--enable-asm \
\
--disable-ffplay \
--disable-ffprobe \
--disable-ffserver \
--disable-doc \
--disable-network \
\
--disable-protocols \
--disable-demuxers \
--disable-decoders \
--disable-encoders \
--disable-muxers \
--enable-libx264 \
--enable-protocol=file \
--enable-demuxer=image2 \
--enable-demuxer=image2pipe \
--enable-demuxer=mjpeg \
--enable-demuxer=rawvideo \
--enable-demuxer=yuv4mpegpipe \
--enable-decoder=png \
--enable-encoder=libx264 \
--enable-encoder=png \
--enable-encoder=mjpeg \
--enable-encoder=gif \
--enable-encoder=mpeg4 \
--enable-encoder=mpeg2video \
--enable-muxer=image2 \
--enable-muxer=image2pipe \
--enable-muxer=mjpeg \
--enable-muxer=mp4 \
--enable-muxer=mpeg2video \
--enable-muxer=rawvideo \
--enable-muxer=yuv4mpegpipe \
--enable-muxer=gif \ -
Getting either incorrect output resolution or FPS from ffmpeg
5 novembre 2011, par AdamI am capturing an RTSP stream from a security camera, and transcoding it for (live streaming) to iphone, using OSX as the encoding platform.
I have it working correctly, and Im tuning it.
However, it seems that it is not outputting the requested resolution. This is my script/Applications/SecurityCamera/openRTSP -v -c -t rtsp://10.0.1.118/ch1-s1 | \
/Applications/SecurityCamera/ffmpeg \
-r 10 -i - \
-y -an -ab 64000 -f mpegts -vcodec copy -s 960x640 \
-flags +loop -cmp +chroma -partitions +parti4x4+partp8x8+partb8x8 \
-subq 5 -trellis 1 -refs 1 -coder 0 -me_range 16 -keyint_min 25 \
-sc_threshold 40 -i_qfactor 0.71 -bt 400k -maxrate 524288 -bufsize 524288 \
-qcomp 0.6 -qmin 10 -qmax 51 -qdiff 4 -level 30 \
-aspect 960:640 -r 10 -g 10 -async 2 -\
|/Applications/SecurityCamera/mediastreamsegmenter -b http://localhost:8080/\
-f /Library/WebServer/Documents/ -i stream.m3u8 -t 10 -s 4 -DThis is the status report :
Input #0, h264, from 'pipe:':
Duration: N/A, bitrate: N/A
Stream #0.0: Video: h264, yuv420p, 1600x1200, 10 fps, 10 tbr, 1200k tbn, 20 tbc
[mpegts @ 0x10100c200] muxrate VBR, pcr every 1 pkts, sdt every 200, pat/pmt every 40 pkts
Output #0, mpegts, to 'pipe:':
Metadata:
encoder : Lavf52.93.0
Stream #0.0: Video: libx264, yuv420p, 1600x1200 [PAR 1:1 DAR 4:3], q=2-31, 90k tbn, 10 tbc
Stream mapping:
Stream #0.0 -> #0.0You can see that its working, but it is outputting 1600x1200 for some reason. (possibly
-vcodec copycopies all codec parameters, not just the codec type ?)If I change the
-vcodec copyto-vcodec libx264then I get the correct status report (stating 960x640, correct), but the streaming switches to 2 FPS (why ? Im forcing both input and output !) and it halts after 54 frames (see output below)Seems stream 0 codec frame rate differs from container frame rate: 20.00 (20/1) -> 10.00 (20/2)
Input #0, h264, from 'pipe:':
Duration: N/A, bitrate: N/A
Stream #0.0: Video: h264, yuv420p, 1600x1200, 10 fps, 10 tbr, 1200k tbn, 20 tbc
[buffer @ 0x100d02420] w:1600 h:1200 pixfmt:yuv420p
[scale @ 0x100d026f0] w:1600 h:1200 fmt:yuv420p -> w:960 h:640 fmt:yuv420p flags:0x4
[libx264 @ 0x10100d400] using SAR=1/1
[libx264 @ 0x10100d400] frame MB size (60x40) > level limit (1620)
[libx264 @ 0x10100d400] using cpu capabilities: MMX2 SSE2Fast SSSE3 Cache64 SlowCTZ SlowAtom
[libx264 @ 0x10100d400] profile Constrained Baseline, level 3.0
[mpegts @ 0x10100c200] muxrate VBR, pcr every 1 pkts, sdt every 200, pat/pmt every 40 pkts
Output #0, mpegts, to 'pipe:':
Metadata:
encoder : Lavf52.93.0
Stream #0.0: Video: libx264, yuv420p, 960x640 [PAR 1:1 DAR 3:2], q=10-51, 200 kb/s, 90k tbn, 10 tbc
Stream mapping:
Stream #0.0 -> #0.0
read pmap fffps= 3 q=37.0 size= 37kB time=0.10 bitrate=3008.0kbits/s bits/s
video pid set at 100
found sequence start
next segment value 1026000
written bytes 376 skipped 0
frame= 54 fps= 2 q=-1.0 Lsize= 160kB time=5.40 bitrate= 242.0kbits/s
video:141kB audio:0kB global headers:0kB muxing overhead 12.872737%
frame I:6 Avg QP:34.68 size: 23524
[libx264 @ 0x10100d400] frame P:48 Avg QP:41.53 size: 75
[libx264 @ 0x10100d400] mb I I16..4: 63.9% 0.0% 36.1%
[libx264 @ 0x10100d400] mb P I16..4: 0.1% 0.0% 0.0% P16..4: 0.8% 0.1% 0.0% 0.0% 0.0% skip:99.0%
[libx264 @ 0x10100d400] final ratefactor: 38.54
[libx264 @ 0x10100d400] coded y,uvDC,uvAC intra: 57.7% 22.3% 2.0% inter: 0.0% 0.1% 0.0%
[libx264 @ 0x10100d400] i16 v,h,dc,p: 23% 35% 27% 15%
[libx264 @ 0x10100d400] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 23% 32% 16% 4% 3% 3% 7% 4% 8%
[libx264 @ 0x10100d400] i8c dc,h,v,p: 83% 11% 5% 0%
[libx264 @ 0x10100d400] kb/s:214.43
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