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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Participer à sa traduction

    10 avril 2011

    Vous pouvez nous aider à améliorer les locutions utilisées dans le logiciel ou à traduire celui-ci dans n’importe qu’elle nouvelle langue permettant sa diffusion à de nouvelles communautés linguistiques.
    Pour ce faire, on utilise l’interface de traduction de SPIP où l’ensemble des modules de langue de MediaSPIP sont à disposition. ll vous suffit de vous inscrire sur la liste de discussion des traducteurs pour demander plus d’informations.
    Actuellement MediaSPIP n’est disponible qu’en français et (...)

  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

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  • FFmpeg eq filter equivalen valuet for css filter

    27 juillet 2018, par Praveen Tamil

    I’m showing the image with css filter applied in browser to how the output will be look like after processing.

    But the css filter accept the value in form of percent for contrast, brightness, saturation.
    But the ffmpeg’s eq filter is totally different and even more gamma params are used.

    I applied following filter in browser side

    filter: brightness(50%) contrast(100%) saturate(100%);
    
filter: brightness(100%) contrast(100%) saturate(50%);
    
filter: brightness(120%) contrast(100%) saturate(125%);

    I don’t how to do mapping these values to FFmpeg eq filter.

    I know below is the default code

    eq=contrast=1:brightness=0:saturation=1:gamma=1:gamma_r=1:gamma_g=1:gamma_b=1:gamma_weight=1

    I need equivalent value of FFmpeg’s eq filter for above mentioned CSS filters.
    And mapping value from CSS filter to eq filter.

    css filter ref : https://www.w3schools.com/cssref/css3_pr_filter.asp

  • FFmpeg eq filter equivalent value for css filter

    27 juillet 2018, par Praveen Tamil

    I’m showing the image with css filter applied in browser to how the output will be look like after processing.

    But the css filter accept the value in form of percent for contrast, brightness, saturation.
    But the ffmpeg’s eq filter is totally different and even more gamma params are used.

    I applied following filter in browser side

    filter: brightness(50%) contrast(100%) saturate(100%);
    
filter: brightness(100%) contrast(100%) saturate(50%);
    
filter: brightness(120%) contrast(100%) saturate(125%);

    I don’t how to do mapping these values to FFmpeg eq filter.

    I know below is the default code

    eq=contrast=1:brightness=0:saturation=1:gamma=1:gamma_r=1:gamma_g=1:gamma_b=1:gamma_weight=1

    I need equivalent value of FFmpeg’s eq filter for above mentioned CSS filters.
    And mapping value from CSS filter to eq filter.

    css filter ref : https://www.w3schools.com/cssref/css3_pr_filter.asp

  • Full C++ example avlib\FFMPEG multi input video filtering [on hold]

    30 juillet 2018, par Stefan Pintilie

    I am asking a question and also answering to it, on how to apply a multi input video complex filter using FFMPEG/avlib/avfiler libraries. I am doing this in hope that will help you, since it took couple of days to dig into ffmpeg code source, understanding it, putting the pieces together and make it work. The same could be applied to audio filtering.

    Everything starting from translating the following ffmpeg command into C++ code :

    ffmpeg -i world.mp4 -i back.png -filter_complex "[0:v]pad=1280:1000:0:0:black[pad];[pad][1:v]overlay=140:720[out]" -map "[out]" -map 0:a output.mp4

    Is basically stacking 2 videos on top of each other. The video from bottom has bigger width, so the final video file has the width of the bottom video and the height of all 2 together.

    Anyway that is just an example, the code example I am going to give you it takes any number of input files and a complex filter description, then producing the output.

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