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  • MediaSPIP v0.2

    21 juin 2013, par

    MediaSPIP 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 (...)

  • XMP PHP

    13 mai 2011, par

    Dixit Wikipedia, XMP signifie :
    Extensible Metadata Platform ou XMP est un format de métadonnées basé sur XML utilisé dans les applications PDF, de photographie et de graphisme. Il a été lancé par Adobe Systems en avril 2001 en étant intégré à la version 5.0 d’Adobe Acrobat.
    Étant basé sur XML, il gère un ensemble de tags dynamiques pour l’utilisation dans le cadre du Web sémantique.
    XMP permet d’enregistrer sous forme d’un document XML des informations relatives à un fichier : titre, auteur, historique (...)

  • Use, discuss, criticize

    13 avril 2011, par

    Talk to people directly involved in MediaSPIP’s development, or to people around you who could use MediaSPIP to share, enhance or develop their creative projects.
    The bigger the community, the more MediaSPIP’s potential will be explored and the faster the software will evolve.
    A discussion list is available for all exchanges between users.

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  • I want to upload a camera video stream to Amazon S3 and download it to an Android phone. I'm completely new to this. How can I do this ?

    26 juin 2015, par Jackie Wu

    I’m really dumb and new to RTP/SIP. Is there a stack that’s recommended for uploading video to the cloud from a camera attached to a microprocessor ? What’s the difference between all the things I’m seeing - MPEG DASH, Live555, ffmpeg, and so on...?

    How does WhatsApp or Dropcam transmit live video ?

  • I want to upload a camera video stream to Amazon S3 and download it to an Android phone. I'm completely new to this. How can I do this ?

    15 mai 2019, par jwu

    I’m really dumb and new to RTP/SIP. Is there a stack that’s recommended for uploading video to the cloud from a camera attached to a microprocessor ? What’s the difference between all the things I’m seeing - MPEG DASH, Live555, ffmpeg, and so on...?

    How does WhatsApp or Dropcam transmit live video ?

  • Read h264 stream from an IP camera

    13 juillet 2015, par João Neves

    Currently, I am trying to use opencv to read a video from my Canon VB-H710F camera.

    For this purpose I tried two different solutions :

    SOLUTION 1 : Read the stream from rtsp address

     VideoCapture cam ("rtsp://root:camera@10.0.4.127/stream/profile1=u");
    

    
 while(true)
    
  cam >> frame;

    In this case I am using opencv to directly read from a stream encoded with in H264 (profile1), however this yields the same problem reported here http://answers.opencv.org/question/34012/ip-camera-h264-error-while-decoding/
    As suggested in the previous question, I tried to disable FFMPEG support in opencv installation, which solved the h264 decoding errors but raised other problem.
    When accessing the stream with opencv, supported by gstreame, there is always a large delay associated.
    With this solution I achieve 15 FPS but I have a delay of 5 seconds, which is not acceptable considering that I need a real time application.

    SOLUTION 2 : Read the frames from http address
    while(true)

    startTime=System.currentTimeMillis() ;

            URL url = new URL("h t t p://[IP]/-wvhttp-01-/image.cgi");
    
        URLConnection con = url.openConnection();
    
        BufferedImage image = ImageIO.read(con.getInputStream());   
    
        showImage(image);
    
        estimatedTime=System.currentTimeMillis()-startTime;
    
        System.out.println(estimatedTime);
    
        Thread.sleep(5);
    
}

    This strategy simply grabs the frame from the url that the camera provides. The code is in Java but the results are the same in C++ with the curl library.
    This solution avoids the delay of the first solution however it takes little more than 100 ms to grab each frame, which means that I can only achieve on average 10 FPS.

    I would like to know how can I read the video using c++ or another library developed in c++ ?

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