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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 (...) -
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 -
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
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Merge commit ’efbfb1ad1112cea79bef51fd9f30c0c94735abfc’
27 août 2015, par Hendrik Leppkes -
how to merge an audio file with an image in android using javaCV
11 mai 2016, par Darshan SoniI have aleady tried some code but it is throwing exception like this,
05-11 17:34:00.449 1838-2316/darshan.fragments_demo E/AndroidRuntime: FATAL EXCEPTION: AsyncTask #1
Process: darshan.fragments_demo, PID: 1838
java.lang.RuntimeException: An error occurred while executing doInBackground()
at android.os.AsyncTask$3.done(AsyncTask.java:309)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:354)
at java.util.concurrent.FutureTask.setException(FutureTask.java:223)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
Caused by: java.lang.UnsatisfiedLinkError: org.bytedeco.javacpp.avutil
at java.lang.Class.classForName(Native Method)
at java.lang.Class.forName(Class.java:324)
at org.bytedeco.javacpp.Loader.load(Loader.java:413)
at org.bytedeco.javacpp.Loader.load(Loader.java:381)
at org.bytedeco.javacpp.avformat$AVFormatContext.<clinit>(avformat.java:2597)
at org.bytedeco.javacv.FFmpegFrameGrabber.startUnsafe(FFmpegFrameGrabber.java:386)
at org.bytedeco.javacv.FFmpegFrameGrabber.start(FFmpegFrameGrabber.java:380)
at darshan.fragments_demo.Layout1$Test.doInBackground(Layout1.java:166)
at darshan.fragments_demo.Layout1$Test.doInBackground(Layout1.java:136)
at android.os.AsyncTask$2.call(AsyncTask.java:295)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:234)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1113)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:588)
at java.lang.Thread.run(Thread.java:818)
</clinit>
Now in gradle file I’ve included some libraries my gradle file is as follow,apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
packagingOptions {
exclude 'META-INF/LICENSE'
exclude 'META-INF/LICENSE-FIREBASE.txt'
exclude 'META-INF/NOTICE'
exclude 'META-INF/services/javax.annotation.processing.Processor'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.properties'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/opencv/pom.xml'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.properties'
pickFirst 'META-INF/maven/org.bytedeco.javacpp-presets/ffmpeg/pom.xml'
}
defaultConfig {
applicationId "darshan.fragments_demo"
minSdkVersion 16
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'
compile group: 'org.bytedeco', name: 'javacv', version: '1.1'
compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.11-0.11', classifier: 'android-arm'
compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '2.4.11-0.11', classifier: 'android-x86'
compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.6.1-0.11', classifier: 'android-arm'
compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '2.6.1-0.11', classifier: 'android-x86'
}And java file is as follow,
public class Test extends AsyncTask {
ProgressDialog dialog;
FFmpegFrameRecorder recorder;
String videoPath;
protected void onPreExecute() {
dialog = new ProgressDialog(Layout1.this);
dialog.setMessage("Genrating video, Please wait.........");
dialog.setCancelable(false);
//dialog.show();
};
@Override
protected Void doInBackground(Void... params) {
File folder = Environment.getExternalStorageDirectory();
String path = folder.getAbsolutePath() + "/DCIM/Camera";
// ArrayList<string> paths = (ArrayList<string>) getListOfFiles(path, "jpg");
long millis = System.currentTimeMillis();
videoPath = path + "/" + "test_sham_"+millis+".3gp";
try {
//audio grabber
FFmpegFrameGrabber grabber2 = new FFmpegFrameGrabber(folder.getAbsolutePath()+"/bluetooth/abcd.mp3");
//video grabber
FFmpegFrameGrabber grabber1 = new FFmpegFrameGrabber(path+"/1.jpg");
grabber1.start();
grabber2.start();
recorder = new FFmpegFrameRecorder(path
+ "/" + "test_sham_"+millis+".mp4", grabber1.getImageWidth(), grabber1.getImageHeight(),2);
//recorder.setVideoCodec(5);
recorder.setVideoCodec(avcodec.AV_CODEC_ID_MPEG4);
// recorder.setVideoCodec(avcodec.AV_CODEC_ID_MP4ALS);
//recorder.setFormat("3gp");
recorder.setFormat("mp4");
recorder.setFrameRate(30);
recorder.setSampleRate(grabber2.getSampleRate());
recorder.setVideoBitrate(30);
long startTime = System.currentTimeMillis();
recorder.start();
Frame frame1, frame2 = null;
while ((frame1 = grabber1.grabFrame()) != null ||
(frame2 = grabber2.grabFrame()) != null) {
recorder.record(frame1);
recorder.record(frame2);
}
recorder.stop();
grabber1.stop();
grabber2.stop();
System.out.println("Total Time:- " + recorder.getTimestamp());
} catch (Exception e) {
e.printStackTrace();
}
return null;
}
}
</string></string>I just cant figure out what is wrong with the implementation
Please help -
ffmpeg batch frame extraction to .png
21 juillet 2022, par Samuel LangI'm attempting to extract stacks of .png files from short 20-second videos of zebrafish hearts for ImageJ heartbeat analysis.


So far, this code,


ffmpeg -i C:\example_directory\filename.movS -r 30/1 C:\example_directory\filename_%04d.png


works quite well. However, this can only be run for one video file at a time, and outputs to one folder at a time.


I have a bit of code that converts multiple .mp4 videos into .mov :


for i in *.mp4; do ffmpeg -i "$i" -qscale 0 "$(basename"$i" .mp4)".mov ; done


is there a way to use a for loop or some kind of batch or .sh file to automate the .png extraction from a large group of short videos, say, a twenty or so videos ?


I'm trying to write instructions to streamline the video and image processing for future lab students, so it might be helpful to know if there are differences in automating this for macOS, linux, or Windows 10


any advice is welcome !


thanks


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