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Autres articles (34)

  • Gestion générale des documents

    13 mai 2011, par

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet ; la récupération des métadonnées du document original pour illustrer textuellement le fichier ;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP (...)

  • 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.

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (4538)

  • AVFrame / AVPicture change color component

    26 avril 2014, par RoeeL

    Given a video stream (runs with SDL), I need to somehow make the video’s frames color green only, blue only and red only (depends on input).

    How can I do that ? How can I set the color component to be RED only for instance ? (R = 255, G = 0, B = 0)

    Didn’t manage to find anything on google. would love to get some assistance.

    thanks

  • uwp app throw error when install from package but works fine in any mode when run directly launching from visual studio

    30 septembre 2020, par Abhishek Sharma

    I have created an app wrapping FFmpeg in uwp now for the requirement
I have all the major dll of FFmpeg and then set to content and copy always in property
now when I launch the app installed from the visual studio in any mode weather release, debug, x86,x64 it works fine but as I created a package and then install the app and run it, it throws an error where it says that dll not found not directly but says file not found which is because of dll because I face that problem in debug mode before and it's because of dll not available to uwp
you can look at the project here : https://github.com/AbhiSharma9350/Winfftool

    


  • How to preserve transparency when using png to make video with ffmpeg

    27 septembre 2016, par Ryan James

    I have a series of png’s that have an alpha channel as a background. Each file is named like file_name.0001.png and so on, in subsequent order. I’d like to join these png’s into a video with ffmpeg and maintain the transparency.

    I’ve tried a couple of things but I suspect I’m running into a codec issue. When I run ffmpeg, the video is created but the background is black.

    If it makes a difference, I’m wanting to use the video in Microsoft Powerpoint. Thanks !

    Edit
    The suggested duplicate is very close to what I was looking for, thank you ! The only reason it’s not a complete solution is none of the options presented in the other thread work well with Microsoft Powerpoint. None of the codecs used in the suggested solution play well with Powerpoint. This is not the fault of ffmpeg, but of Powerpoint.

    Though ffmpeg doesn’t seem to be able to do what I need, I found that imagemagick did the trick. I was able to create a gif from the images and the alpha channel was preserved. I used the following :

    convert -dispose 3 -coalesce images.*.png gif_file_name.gif

    The -dispose 3 is critical as it tells imagemagick to clear the image prior to overlay, otherwise, you can see each image overlaid on each other (since they have the transparent background).

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