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  • (Dés)Activation de fonctionnalités (plugins)

    18 février 2011, par

    Pour gérer l’ajout et la suppression de fonctionnalités supplémentaires (ou plugins), MediaSPIP utilise à partir de la version 0.2 SVP.
    SVP permet l’activation facile de plugins depuis l’espace de configuration de MediaSPIP.
    Pour y accéder, il suffit de se rendre dans l’espace de configuration puis de se rendre sur la page "Gestion des plugins".
    MediaSPIP est fourni par défaut avec l’ensemble des plugins dits "compatibles", ils ont été testés et intégrés afin de fonctionner parfaitement avec chaque (...)

  • Activation de l’inscription des visiteurs

    12 avril 2011, par

    Il est également possible d’activer l’inscription des visiteurs ce qui permettra à tout un chacun d’ouvrir soit même un compte sur le canal en question dans le cadre de projets ouverts par exemple.
    Pour ce faire, il suffit d’aller dans l’espace de configuration du site en choisissant le sous menus "Gestion des utilisateurs". Le premier formulaire visible correspond à cette fonctionnalité.
    Par défaut, MediaSPIP a créé lors de son initialisation un élément de menu dans le menu du haut de la page menant (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

Sur d’autres sites (9847)

  • Piwik Analytics and becoming a Piwik Certified Professional

    10 juillet 2017, par Piwik Core Team — About

    Digital Analytics software

    Piwik Analytics is the leading open source digital analytics software, offering users around the world an opportunity to liberate their analytics. Most recently, they have introduced the Piwik Certified Professional certification exam which now allows users to become qualified in Piwik Analytics software on an individual level to gain a deeper understanding of Piwik. In this blog post I will guide you through the topics that are covered during the exam and provide you with advice on taking the official Piwik Certified Professional exam.

    Piwik Certified Professional Program.png

    Piwik certification exam

    Taking the exam will cost you a maximum investment of 60 minutes of your time, besides learning all materials of course. The exam consists of 55 multiple choice questions with four answers to choose from. The score needed to pass is 80% (44 questions answered correctly) and the cost is 50 USD total. An earned certificate is valid for 18 months, before these eighteen months are over a person should pass the exam again in order to retain the certified status.

    Learning topics

    The exam consists of two sections. The main section is focused on the Piwik Analytics software itself while the second part relates to digital analytics in general. All topics and content covered about Piwik Analytics is available through the official Piwik user guides. The second section tests your experience as a digital analyst, online marketer or any other function title in which you work with Piwik Analytics. In this case, the general digital analytics questions should be quite straightforward and easy to answer, and cover only a fraction of the total questions in the exam (around 10% with 5-7 general questions). An outline of all exam topics are listed below :

    • A Tour of Piwik
    • Track Goals and Measure Conversions
    • Event Tracking
    • Content Tracking
    • Ecommerce Analytics
    • Row Evolution – View and compare historical data
    • Segmentation – Compare segments of visitors
    • Visitors Maps – World, region, city
    • Real Time Visitor World Map
    • Real Time Analytics
    • The Visitor Profile
    • Site speed and Page speed
    • Site Search Tracking and Reporting
    • Transitions – Analyze the previous and following actions of your visitors for each page
    • Page Overlay
    • Custom Variables Analytics
    • Custom Dimensions
    • User ID
    • Annotating your data
    • Tracking Campaigns
    • URL Builder for Marketing Campaign Tracking

    The best way to prepare for the exam is read the entire Piwik user guides. You should definitely read the “Analytics Features” section since most questions of the Piwik Certified Professional – Digital Analytics exam that will be asked come from these sections. Furthermore you should be able to find your way around in Piwik at a basic level which means you know what the reports mean and where to find certain information. In addition, some basic knowledge regarding the settings is useful too. The exam is definitely not a technical implementation exam so no coding knowledge or any other deeply technical knowledge regarding Piwik is required.

    Finally, some general questions will be asked regarding digital analytics covering topics about KPI’s and the role of the analyst within an organization. While Piwik provides some links to articles by Avinash Kaushik covering these topics, you will not be able to learn these topics just by reading. When you have some experience with digital analytics you should be able to answer these general digital analytics questions with common sense and (even basic) experience as a digital analyst, analytics consultant, online marketer or any other related job whereby you work with Piwik.

    Taking the exam

    With 55 questions to be answered in 60 minutes the key to passing the exam is to keep moving. You have about 1 minute and 5 seconds to answer each question. This means that you should focus on the easiest questions first and return later to the questions that are a bit more challenging to answer. Keep an eye on the timer that will be displayed in the exam window. When the time expires or you click ‘Finish test’ your exam will end and be automatically submitted for review. Remember to first check all questions and answers before you click on the ‘Finish test’ button. If you click too soon and you still haven’t answered all questions, all unanswered questions will be marked as incorrect.

    During the test, no hard copy or online materials may be referenced. As you can imagine, it is almost impossible to check if users reference these kind of materials. However, be aware of the penalty system that is in place during the test. When a user leaves from the active test screen to another screen (i.e. a different browser tab) the screen turns red and provides a warning count when the user returns to the test screen again. You will have three warnings, after this your test will be submitted and graded as false. Furthermore, keep in mind you will have to do the test in one go and cannot pause and come back another time.

    Practice makes perfect

    Below I have included some example questions that could be asked during the exam. These questions do not necessarily represent how Piwik will test you on these topics.

    • What is the default report date that is selected by Piwik ?
    • Why would someone flatten a report in Piwik ?
    • Why would a user especially use the Page Overlay report ?
    • What are the three main Ecommerce interactions tracked with Piwik ?
    • What is an example of an anonymized IP address in Piwik ?

    Passing the Piwik Certified Professional – Digital Analytics exam

    Directly after submitting the exam you will receive a notification telling you whether or not you have passed the exam. If you pass, you will be able to download your personal certification right away. A report of your exam performance will also be available. This report lists the amount of correct answers and total questions by topic. The report with your exam performance is also available if you did not pass the exam. The certificate is valid for 18 months from the date of successful completion.

    Sometimes the difference between passing and failing can be a matter of how you interpret some of Piwik’s questions. There are several tricky questions included, so be sure to pay attention to detail on every question. If you fail, you may take the exam again. You will have to pay the 50 USD fee for each try, so do your best to pass it the first time.

    → Register to become a Piwik Certified Professional.

    We wish you the best of luck and happy analytics !

  • JavaCV record video in Android

    11 janvier 2017, par wyx

    I want to record video quiet and without preview in Android. So I choice MediaRecorder but I could record only without preview but what make me crazy is that when MediaRecorder start or stop it will with a sound dee.... I try many methods about that . But I think it perhaps sth related to the OS of the mobile. So I try JavaCV because I also want to have a Live function in my app.

    But JavaCV spent me to too much time to solve some strange problems because it’s my first time to do sth about C++ src and video.

    Just compile group: 'org.bytedeco', name: 'javacv-platform', version: '1.3' as the README.md ,I even can’t build my apk.

    Error:Execution failed for task ':app:transformResourcesWithMergeJavaResForDebug'.
    
> com.android.build.api.transform.TransformException: com.android.builder.packaging.DuplicateFileException: Duplicate files copied in APK org/bytedeco/javacpp/macosx-x86_64/libusb-1.0.dylib
    
    File1: /Users/wyx/.gradle/caches/modules-2/files-2.1/org.bytedeco.javacpp-presets/libfreenect/0.5.3-1.3/736d65a3ef042258429d8e7742128c411806b432/libfreenect-0.5.3-1.3-macosx-x86_64.jar
    
    File2: /Users/wyx/.gradle/caches/modules-2/files-2.1/org.bytedeco.javacpp-presets/libdc1394/2.2.4-1.3/f1498dacc46162ab68faeb8d66cf02b96fe41c61/libdc1394-2.2.4-1.3-macosx-x86_64.jar

    And then I modified it according this issuse
    use this to repalce. It can build the apk. But the can’t run.

      android {
    
   ..............
    
    packagingOptions {
    
        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'
    
    }
    
}
    

    
dependencies {
    
    compile group: 'org.bytedeco', name: 'javacv', version: '1.3'
    
    compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.2.1-1.3', classifier: 'android-x86'
    
    compile group: 'org.bytedeco.javacpp-presets', name: 'ffmpeg', version: '3.2.1-1.3', classifier: 'android-arm'
    
    compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.1.0-1.3', classifier: 'android-x86'
    
    compile group: 'org.bytedeco.javacpp-presets', name: 'opencv', version: '3.1.0-1.3', classifier: 'android-arm'
    
}

    My demo code VideoService which will invoke in MainActivity

    package com.fs.fs.api;
    

    
import com.fs.fs.App;
    
import com.fs.fs.utils.DateUtils;
    
import com.fs.fs.utils.FileUtils;
    

    
import org.bytedeco.javacpp.avcodec;
    
import org.bytedeco.javacv.FFmpegFrameRecorder;
    
import org.bytedeco.javacv.FrameRecorder;
    

    
import java.util.Date;
    

    
/**
    
 * Created by wyx on 2017/1/11.
    
 */
    
public class VideoService {
    
    private FFmpegFrameRecorder mFrameRecorder;
    
    private String path;
    

    
    private VideoService() {
    
    }
    

    
    private static class SingletonHolder {
    
        private static final VideoService INSTANCE = new VideoService();
    
    }
    

    
    public static VideoService getInstance() {
    
        return SingletonHolder.INSTANCE;
    
    }
    

    
    public void startRecordVideo() {
    
        String fileName = String.format("%s.%s", DateUtils.date2String(new Date(), "yyyyMMdd_HHmmss"), "mp4");
    
        path = FileUtils.getExternalFullPath(App.getInstance(), fileName);
    
        mFrameRecorder = new FFmpegFrameRecorder(path, 640, 480, 1);
    
        mFrameRecorder.setVideoCodec(avcodec.AV_CODEC_ID_H264);
    
        mFrameRecorder.setVideoOption("tune", "zerolatency");
    
        mFrameRecorder.setVideoOption("preset", "ultrafast");
    
        mFrameRecorder.setVideoOption("crf", "28");
    
        mFrameRecorder.setVideoBitrate(300 * 1000);
    
        mFrameRecorder.setFormat("mp4");
    

    
        mFrameRecorder.setFrameRate(30);
    
        mFrameRecorder.setAudioOption("crf", "0");
    
        mFrameRecorder.setSampleRate(48 * 1000);
    
        mFrameRecorder.setAudioBitrate(960 * 1000);
    
        mFrameRecorder.setAudioCodec(avcodec.AV_CODEC_ID_AAC);
    
        try {
    
            mFrameRecorder.start();
    
        } catch (FrameRecorder.Exception e) {
    
            e.printStackTrace();
    
        }
    
    }
    

    
    public void stop() {
    
        if (mFrameRecorder != null) {
    
            try {
    
                mFrameRecorder.stop();
    
                mFrameRecorder.release();
    
            } catch (FrameRecorder.Exception e) {
    
                e.printStackTrace();
    
            }
    
            mFrameRecorder = null;
    
        }
    
    }
    

    
}

    MainActivity

    package com.fs.fs.activity;
    

    
import android.app.Activity;
    
import android.os.Bundle;
    

    
import com.fs.fs.R;
    
import com.fs.fs.api.VideoService;
    

    
import static java.lang.Thread.sleep;
    

    

    
public class MainActivity extends Activity {
    

    
    @Override
    
    protected void onCreate(Bundle savedInstanceState) {
    
        super.onCreate(savedInstanceState);
    
        setContentView(R.layout.activity_main);
    

    

    
        VideoService.getInstance().startRecordVideo();
    
        try {
    
            sleep(10 * 1000);
    
        } catch (InterruptedException e) {
    
            e.printStackTrace();
    
        }
    
        VideoService.getInstance().stop();
    
    }
    
}

    Error which make me want to cry.

    E/AndroidRuntime: FATAL EXCEPTION: main
    
                  Process: com.fs.fs, PID: 30259
    
                  java.lang.NoClassDefFoundError: java.lang.ClassNotFoundException: org.bytedeco.javacpp.avutil
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:590)
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:530)
    
                      at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694)
    
                      at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149)
    
                      at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34)
    
                      at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75)
    
                      at android.app.Activity.performCreate(Activity.java:5304)
    
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090)
    
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245)
    
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331)
    
                      at android.app.ActivityThread.access$1000(ActivityThread.java:143)
    
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244)
    
                      at android.os.Handler.dispatchMessage(Handler.java:102)
    
                      at android.os.Looper.loop(Looper.java:136)
    
                      at android.app.ActivityThread.main(ActivityThread.java:5291)
    
                      at java.lang.reflect.Method.invokeNative(Native Method)
    
                      at java.lang.reflect.Method.invoke(Method.java:515)
    
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849)
    
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665)
    
                      at dalvik.system.NativeStart.main(Native Method)
    
                   Caused by: java.lang.ClassNotFoundException: org.bytedeco.javacpp.avutil
    
                      at java.lang.Class.classForName(Native Method)
    
                      at java.lang.Class.forName(Class.java:251)
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:585)
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:530) 
    
                      at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694) 
    
                      at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149) 
    
                      at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34) 
    
                      at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75) 
    
                      at android.app.Activity.performCreate(Activity.java:5304) 
    
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090) 
    
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245) 
    
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331) 
    
                      at android.app.ActivityThread.access$1000(ActivityThread.java:143) 
    
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
    
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
    
                      at android.os.Looper.loop(Looper.java:136) 
    
                      at android.app.ActivityThread.main(ActivityThread.java:5291) 
    
                      at java.lang.reflect.Method.invokeNative(Native Method) 
    
                      at java.lang.reflect.Method.invoke(Method.java:515) 
    
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 
    
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 
    
                      at dalvik.system.NativeStart.main(Native Method) 
    
                   Caused by: java.lang.NoClassDefFoundError: org/bytedeco/javacpp/avutil
    
                      at java.lang.Class.classForName(Native Method) 
    
                      at java.lang.Class.forName(Class.java:251) 
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:585) 
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:530) 
    
                      at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694) 
    
                      at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149) 
    
                      at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34) 
    
                      at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75) 
    
                      at android.app.Activity.performCreate(Activity.java:5304) 
    
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090) 
    
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245) 
    
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331) 
    
                      at android.app.ActivityThread.access$1000(ActivityThread.java:143) 
    
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
    
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
    
                      at android.os.Looper.loop(Looper.java:136) 
    
                      at android.app.ActivityThread.main(ActivityThread.java:5291) 
    
                      at java.lang.reflect.Method.invokeNative(Native Method) 
    
                      at java.lang.reflect.Method.invoke(Method.java:515) 
    
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 
    
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 
    
                      at dalvik.system.NativeStart.main(Native Method) 
    
                   Caused by: java.lang.ClassNotFoundException: Didn't find class "org.bytedeco.javacpp.avutil" on path: DexPathList[[zip file "/data/app/com.fs.fs-2.apk"],nativeLibraryDirectories=[/data/app-lib/com.fs.fs-2, /vendor/lib, /system/lib, /data/datalib]]
    
                      at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
    
                      at java.lang.ClassLoader.loadClass(ClassLoader.java:497)
    
                      at java.lang.ClassLoader.loadClass(ClassLoader.java:457)
    
                      at java.lang.Class.classForName(Native Method) 
    
                      at java.lang.Class.forName(Class.java:251) 
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:585) 
    
                      at org.bytedeco.javacpp.Loader.load(Loader.java:530) 
    
                      at org.bytedeco.javacpp.avcodec$AVPacket.<clinit>(avcodec.java:1694) 
    
                      at org.bytedeco.javacv.FFmpegFrameRecorder.<init>(FFmpegFrameRecorder.java:149) 
    
                      at com.fs.fs.api.VideoService.startRecordVideo(VideoService.java:34) 
    
                      at com.fs.fs.activity.MainActivity.onCreate(MainActivity.java:75) 
    
                      at android.app.Activity.performCreate(Activity.java:5304) 
    
                      at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1090) 
    
                      at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2245) 
    
                      at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2331) 
    
                      at android.app.ActivityThread.access$1000(ActivityThread.java:143) 
    
                      at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1244) 
    
                      at android.os.Handler.dispatchMessage(Handler.java:102) 
    
                      at android.os.Looper.loop(Looper.java:136) 
    
                      at android.app.ActivityThread.main(ActivityThread.java:5291) 
    
                      at java.lang.reflect.Method.invokeNative(Native Method) 
    
                      at java.lang.reflect.Method.invoke(Method.java:515) 
    
                      at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:849) 
    
                      at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:665) 
    
                      at dalvik.system.NativeStart.main(Native Method) 
    
</init></clinit></init></clinit></init></clinit></init></clinit>

    So I want to know a comfortable method to achieve my goal : recode video quiet and without preview. And Live real time ?

    I found ffmpeg4android is a prefect library to run ffmpeg command. I just use it to compress videos from MediaRecorder But I don’t how to do use it to achieve my goal.

  • Summary Video Accessibility Talk

    1er janvier 2014, par silvia

    I’ve just got off a call to the UK Digital TV Group, for which I gave a talk on HTML5 video accessibility (slides best viewed in Google Chrome).

    The slide provide a high-level summary of the accessibility features that we’ve developed in the W3C for HTML5, including :

    • Subtitles & Captions with WebVTT and the track element
    • Video Descriptions with WebVTT, the track element and speech synthesis
    • Chapters with WebVTT for semantic navigation
    • Audio Descriptions through synchronising an audio track with a video
    • Sign Language video synchronized with a main video

    I received some excellent questions.

    The obvious one was about why WebVTT and not TTML. While for anyone who has tried to implement TTML support, the advantages of WebVTT should be clear, for some the decision of the browsers to go with WebVTT still seems to be bothersome. The advantages of CSS over XSL-FO in a browser-context are obvious, but not as much outside browsers. So, the simplicity of WebVTT and the clear integration with HTML have to speak for themselves. Conversion between TTML and WebVTT was a feature that was being asked for.

    I received a question about how to support ducking (reduce the volume of the main audio track) when using video descriptions. My reply was to either use video descriptions with WebVTT and do ducking during the times that a cue is active, or when using audio descriptions (i.e. actual audio tracks) to add an additional WebVTT file of kind=metadata to mark the intervals in which to do ducking. In both cases some JavaScript will be necessary.

    I received another question about how to do clean audio, which I had almost forgotten was a requirement from our earlier media accessibility document. “Clean audio” consists of isolating the audio channel containing the spoken dialog and important non-speech information that can then be amplified or otherwise modified, while other channels containing music or ambient sounds are attenuated. I suggested using the mediagroup attribute to provide a main video element (without an audio track) and then the other channels as parallel audio tracks that can be turned on and off and attenuated individually. There is some JavaScript coding involved on top of the APIs that we have defined in HTML, but it can be implemented in browsers that support the mediagroup attribute.

    Another question was about the possibilities to extend the list of @kind attribute values. I explained that right now we have a proposal for a new text track kind=”forced” so as to provide forced subtitles for sections of video with foreign language. These would be on when no other subtitle or caption tracks are activated. I also explained that if there is a need for application-specific text tracks, the kind=”metadata” would be the correct choice.

    I received some further questions, in particular about how to apply styling to captions (e.g. color changes to text) and about how closely the browser are able to keep synchronization across multiple media elements. The earlier was easily answered with the ::cue pseudo-element, but the latter is a quality of implementation feature, so I had to defer to individual browsers.

    Overall it was a good exercise to summarize the current state of HTML5 video accessibility and I was excited to show off support in Chrome for all the features that we designed into the standard.

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