Recherche avancée

Médias (3)

Mot : - Tags -/spip

Autres articles (25)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

Sur d’autres sites (5935)

  • Display YUV420P video using OpenGLES on iPhone

    25 décembre 2014, par user3487978

    I am writing an app displaying YUV420p video using ffmpeg library on iPhone, every thing works fine, but the OpenGL color is a little strange, see picture, the bellow image is displaying using AVPicture in RGB format, above is using AVPicture in YUV format.
    any ideas ?

    my shader

    varying highp vec2 varTexcoord;
    uniform sampler2D SamplerY;
    uniform sampler2D SamplerUV;
    void main (void)
    {
       mediump vec3 yuv;
       lowp vec3 rgb;
       yuv.x = texture2D(SamplerY, varTexcoord).r;
       yuv.yz = texture2D(SamplerUV, varTexcoord).rg - vec2(0.5, 0.5);
       // Using BT.709 which is the standard for HDTV
       rgb = mat3(      1,       1,      1,
                   0, -.18732, 1.8556,
                   1.57481, -.46813,      0) * yuv;
       gl_FragColor = vec4(rgb,1.0);
    }

    Renderer :

    glActiveTexture(GL_TEXTURE0);
    glTexImage2D(GL_TEXTURE_2D,
                0,
                GL_LUMINANCE,
                (GLsizei)model.width,
                (GLsizei)model.height,
                0,
                GL_LUMINANCE,
                GL_UNSIGNED_BYTE,
                [model.y bytes]);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    glActiveTexture(GL_TEXTURE1);
    glTexImage2D(GL_TEXTURE_2D,
                0,
                GL_LUMINANCE,
                (GLsizei)model.width/2,
                (GLsizei)model.height/2,
                0,
                GL_LUMINANCE,
                GL_UNSIGNED_BYTE,
                [model.uv bytes]);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);

    image on bottom is using RGB, above is using YUV

  • Calling ffmpeg from php

    7 juillet 2013, par v3ga

    I need to run ffmpeg from a php script. The ffmpeg wiki page on the same topic (http://ffmpeg.org/trac/ffmpeg/wiki/Using%20FFmpeg%20from%20PHP%20scripts) suggests using shell_exec over ffmpeg-php. Some other pages suggests using ffmpeg-php. Which method is better ? Is ffmpeg-php compatible with latest versions of php ? My only purpose is to convert any videos hosted by the user into mp4 (h.264,aac).

  • Révision 99882 : Revert de r99881 finalement car wikipedia indique que l’abbréviation de numéro es...

    10 octobre 2016, par marcimat@rezo.net

    https://fr.wikipedia.org/wiki/%E2%84%96 … bon… tant pis pour le title du coup.