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Autres articles (42)

  • Les vidéos

    21 avril 2011, par

    Comme les documents de type "audio", Mediaspip affiche dans la mesure du possible les vidéos grâce à la balise html5 .
    Un des inconvénients de cette balise est qu’elle n’est pas reconnue correctement par certains navigateurs (Internet Explorer pour ne pas le nommer) et que chaque navigateur ne gère en natif que certains formats de vidéos.
    Son avantage principal quant à lui est de bénéficier de la prise en charge native de vidéos dans les navigateur et donc de se passer de l’utilisation de Flash et (...)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (5531)

  • How to change the colour of pixels in videos with OpenGL in C++ [closed]

    8 juin 2020, par Dennio

    I would like to overlay a specifically coloured pattern or matrix over every frame of a video, so that every pixel changes it's color slightly corresponding to a data-matrix which I generate from a bitstream. It would begin with the upper left pixel and would go on till the end of the "line" and so on. I would like to change the red and blue values which means if the bitstream begins with a "1" the amount of red should be raised by 5 and if it begins with a "0" the amount of blue should be raised by 5. That would be done for every pixel of the frame.

    



    I can already open a video using FFmpeg in a selfmade videoplayer, I can also generate the data-matrix but I just don't know which way is suitable to manipulate the videoframes in c++. I already successfully compiled some OpenGL and OpenGL ES triangles on my RaspberryPi 4. Is it possible to convert the frames and pixels into textures and go from there to display everything ? Or is there maybe a better way to do this ? I would like to use the GPU of the RaspberryPi for the tasks to get a good performance out of this.

    


  • crop a inner video from a static image background [on hold]

    31 mars 2019, par hahahhhhhha

    Human can tell that this is a video overlaid on a static image. How to use ffmpeg or other programs to crop the rectangular video from the static image background ?

    I tried cropdetect with ffmpeg, but it seems that cropdetect is good at detecting black bars for something like cinematic videos but not good at detecting e.g. pink or sky-blue bar ?
    I also tried crop, but you need to provide parameters width, height, x, y for the crop to work. because my the video is not overlaid on the same location all the time, so I prefer to detect and crop automatically.how to crop the rectangular video from the static image background, the blue-ish portion is the background

  • Anomalie #3478 (Nouveau) : Champ obligatoire et formulaire_editer_objet_verifier

    10 juin 2015, par Debondt Didier

    Lorsqu’un champ est marqué obligatoire, mais qu’on entre une valeur "0" dans le champ, le test (ecrire/inc/editer.php L72) :

    if (!_request($obli)) est faux car !0 = false.

    Hors on a parfois envie de pouvoir entrer 0 (nombre d’enfant, d’animaux, etc.) ?

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