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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 -
Les autorisations surchargées par les plugins
27 avril 2010, parMediaspip core
autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs -
Soumettre bugs et patchs
10 avril 2011Un logiciel n’est malheureusement jamais parfait...
Si vous pensez avoir mis la main sur un bug, reportez le dans notre système de tickets en prenant bien soin de nous remonter certaines informations pertinentes : le type de navigateur et sa version exacte avec lequel vous avez l’anomalie ; une explication la plus précise possible du problème rencontré ; si possibles les étapes pour reproduire le problème ; un lien vers le site / la page en question ;
Si vous pensez avoir résolu vous même le bug (...)
Sur d’autres sites (8243)
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Mixing a FLV audio stream with a WAV background track, and converting to MP3 with SoX and FFmpeg
7 septembre 2012, par tubboI'm building a Flash-based recording application for a contracted web site. It streams the recorded voice (via SWF) to a Red5 server, then uses a combination of FFmpeg and SoX to compile the vocal audio with a lower-in-volume background music track. This all has to happen on-demand, that is, when a user "saves" his or her vocal recording.
Here is an example command I will be running. Names have been changed to protect the innocent. The filenames describe their role in the final file :
sox --combine mix -p --no-show-progress --norm "|ffmpeg -i /usr/share/red5/webapps/audiorecorder/stream/SPOKEN_VOICE.flv -t wav pipe:1" /var/www/ufiles/music/BACKGROUND_MUSIC.wav - | ffmpeg -i pipe:1 /var/www/ufiles/recordings/COMPILED_AUDIO_RECORDING.mp3When I run this command in the shell, this is what happens :
$ sox --combine mix -p --no-show-progress --norm "|ffmpeg -i audioStream_1321399534128_21.flv -ar 44100 -ac 2 -t wav pipe:1" wrong.wav - | ffmpeg -i pipe:1 ~/www/trauma101.com/compiled.mp3
ffmpeg version N-34884-g7575980, Copyright (c) 2000-2011 the FFmpeg developers
built on Nov 15 2011 14:06:49 with gcc 4.4.5
configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libx264 --enable-x11grab --enable-libspeex
libavutil 51. 25. 0 / 51. 25. 0
libavcodec 53. 34. 0 / 53. 34. 0
libavformat 53. 20. 0 / 53. 20. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 48. 1 / 2. 48. 1
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
ffmpeg version N-34884-g7575980, Copyright (c) 2000-2011 the FFmpeg developers
built on Nov 15 2011 14:06:49 with gcc 4.4.5
configuration: --enable-gpl --enable-version3 --enable-nonfree --enable-postproc --enable-libfaac --enable-libmp3lame --enable-libx264 --enable-x11grab --enable-libspeex
libavutil 51. 25. 0 / 51. 25. 0
libavcodec 53. 34. 0 / 53. 34. 0
libavformat 53. 20. 0 / 53. 20. 0
libavdevice 53. 4. 0 / 53. 4. 0
libavfilter 2. 48. 1 / 2. 48. 1
libswscale 2. 1. 0 / 2. 1. 0
libpostproc 51. 2. 0 / 51. 2. 0
[libspeex @ 0x1e36b20] Missing Speex header, assuming defaults.
Input #0, flv, from 'audioStream_1321399534128_21.flv':
Metadata:
novideocodec : 0
server : Red5 Server 1.0.0 RC2 Rev: 4295
creationdate : Tue Nov 15 15:25:41 PST 2011
canSeekToEnd : true
Duration: 00:00:06.77, start: 0.000000, bitrate: 43 kb/s
Stream #0:0: Audio: speex, 16000 Hz, 1 channels, s16
Invalid duration specification for t: wav
sox FAIL formats: can't open input pipe `|ffmpeg -i audioStream_1321399534128_21.flv -ar 44100 -ac 2 -t wav pipe:1': premature EOFI think the issue is stemming from the conversion from FLV to WAV in FFmpeg, and since it's being piped in it causes the whole process to fail. I always get that duration warning, but when FFmpeg outputs to a .wav file and the SoX command is run separately, I can still get a WAV from SoX and convert that to MP3 manually. I'd like to do all this in one line, piping the data between applications.
What do I do ?
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Creating thumbnails with FFmpeg
3 janvier 2012, par Calin-Andrei BurloiuI am using FFmpeg to extract thumbnails from specific positions of video files.
I found on the web two approaches to do this :
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With
-ss(seek) parameter before-i(input) parameter :ffmpeg -y -ss $SEEK_POINT -i input.ogv -vcodec mjpeg -vframes 1 -an -s 120x90 -f rawvideo output.jpg -
With
-ss(seek) parameter after-i(input) parameter :ffmpeg -y -i input.ogv -vcodec mjpeg -ss $SEEK_POINT -vframes 1 -an -s 120x90 -f rawvideo output.jpg
The first method generates a bad thumbnail with gray spots, but works very fast. The error returned is
[theora @ 0x8097240] vp3: first frame not a keyframe.The second method always works but show an error which cause the extraction to take a lot of time. This amount of time is not fixed and it depends on the seek point as I noticed. Sometimes it takes a few seconds and other times several minutes to extract a thumbnail. I get the error
Buffering several frames is not supported. Please consume all available frames before adding a new one.in the following output :Input #0, ogg, from 'input.ogv':
Duration: 00:21:52.76, start: 0.000000, bitrate: 844 kb/s
Stream #0.0: Video: theora, yuv420p, 800x600 [PAR 4:3 DAR 16:9], 25 fps, 25 tbr, 25 tbn, 25 tbc
Stream #0.1: Audio: vorbis, 44100 Hz, stereo, s16, 192 kb/s
Metadata:
ENCODER : Lavf52.102.0
Incompatible pixel format 'yuv420p' for codec 'mjpeg', auto-selecting format 'yuvj420p'
[buffer @ 0x9250840] w:800 h:600 pixfmt:yuv420p
[scale @ 0x92508a0] w:800 h:600 fmt:yuv420p -> w:120 h:90 fmt:yuvj420p flags:0x4
Output #0, rawvideo, to 'output.jpg':
Metadata:
encoder : Lavf53.2.0
Stream #0.0: Video: mjpeg, yuvj420p, 120x90 [PAR 4:3 DAR 16:9], q=2-31, 200 kb/s, 90k tbn, 25 tbc
Stream mapping:
Stream #0.0 -> #0.0
Press ctrl-c to stop encoding
[buffer @ 0x9250840] Buffering several frames is not supported. Please consume all available frames before adding a new one.
frame= 0 fps= 0 q=0.0 size= 0kB time=10000000000.00 bitrate= 0.0kbit
Last message repeated 15448 times
frame= 1 fps= 0 q=3.4 Lsize= 3kB time=0.04 bitrate= 598.8kbits/s
video:3kB audio:0kB global headers:0kB muxing overhead 0.000000%How can I extract thumbnails without any problems using FFmpeg from a custom position of a video regardless of the input format ?
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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");
}
}
}
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