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Autres articles (15)

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    13 juin 2013

    Puis-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

  • 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 (...)

  • 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 (3417)

  • Pass ID3D11Texture2D back buffer to libx264 encoder

    17 janvier 2019, par Chris Sixsmith

    I’m writing a C++ program to encode frames from a DirectX game to the H.264/MPEG-4 AVC format. I am using libx264 alone with no other dependencies at the moment.

    I have a ID3D11Texture2D* resolved back buffer of the next game frame. I need to somehow copy this into the x264_picture input (apparently YUV420P format according to limited help I’ve found) but I cannot find any way to do so online.

    Here is my code at the moment :

    void Fx264VideoEncoder::Fx264VideoEncoderImpl::InitFrameInputBuffer(const FTexture2DRHIRef& BackBuffer, FFrame& Frame)
    
{
    
    x264_picture_alloc(Frame.InputPicture, X264_CSP_I420, x264Parameters.i_width, x264Parameters.i_height);
    

    
    // We need to take the back buffer and convert it to an input format that libx264 can understand
    
    {
    
        ID3D11Texture2D* ResolvedBackBufferDX11 = (ID3D11Texture2D*)(GetD3D11TextureFromRHITexture(Frame.ResolvedBackBuffer)->GetResource());
    
        EPixelFormat PixelFormat = Frame.ResolvedBackBuffer->GetFormat();
    

    
        // ...?
    
    }
    
}

  • How compress images with ffmpeg till specific size threshold , and ability to restore back

    20 mars 2019, par VitalyT

    I need to reduce as much storage as i can.

    so , Lets say i have dir in file system that contains pictures (png/jpeg ,etc...) and html ,js files

    My purpose is look for media
    filenames suffix for example *.jpg, *.png, *.webm, *.ico in a folder and
    compress max till 38K.

    basically the average original images size is 170K.

    Avatar images should be under 4KB when a good size would be 2KB

    I’ve tried so far

    ffmpeg -i ~/Desktop/test123.jpeg -vframes 1 -compression_level 100  ~/Desktop/output_1623x1623.png

    but it gives me maximum 104K...

    what is the best way to compress or scaling down the images but with ability to restore with the same quality

    regards,

  • Can I add photon to video and make this photo to be thumbnails(Cover) ? [duplicate]

    2 avril 2019, par 林炳河

    This question already has an answer here :

    I want to add thumbnail to a video, but all of my attempts have been not working.

    I already try use ffmpeg command to do this, but it didn’t help.

    what command i used :

    ffmpeg -i source.mp4 -i cover.png  -filter_complex "[1:v]scale=720:1280[oval],[0:v][oval]overlay=enable='between(n,0,1)',fps=fps=15" -pix_fmt yuv420p -c:a copy output.mp4

    Please help me.

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