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  • Publier sur MédiaSpip

    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

  • 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) (...)

  • 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 (...)

Sur d’autres sites (9167)

  • h.265 encoding with ffmpeg, which preset question

    26 novembre 2018, par Christophe

    I’m using ffmpeg on the command line to encode video from a QuickTime ProRes 4444p DCI-resolution source to h.265, y420p. It’s working just fine, but I noticed something very odd : If I change nothing but the preset, the file size goes down as the encoding speed goes up :

    Preset and resulting file size :

    • veryslow : 5814379
    • slower : 5812081
    • slow : 5640739
    • medium : 5455779
    • fast : 5164506
    • faster : 5099833
    • veryfast : 5108824 (file size starts going up from this point)

    My question is : This is rather the opposite from what I’d expect. Am I missing something obvious ?

  • FFMPEG : Output video is running faster than input (canvas)

    19 juin 2015, par Abhinav

    I am trying to record a HTML5 canvas animation using PhantomJS + FFMPEG.

    runner.js

    var page = require('webpage').create();
    
page.viewportSize = { width: 640, height: 480 };
    

    
page.open('file:///Users/abhi/Documents/TJDev/Canvas/TJCanvasTheme2/index.html', function () {
    
  setInterval(function() {
    
    page.render('/dev/stdout', { format: "png" });
    
  }, 25);
    
});

    But the output video is coming way faster than the actual animation. I have tried to vary the frame per second rate, but could not get desired results.

    I might be using some wrong parameters/flags I guess.

    phantomjs runner.js | ffmpeg -y -c:v png -f image2pipe -r 25 -t 10  -i - -c:v libx264 -pix_fmt yuv420p -movflags +faststart test11.mp4

    Question :
    Frame rate is how many frames are captured per second. So it should only contribute to the quality of the output video and not to its speed ?

    Can anyone help me to figure out this.

  • Unable to get the original quality after resizing in ffmpeg

    24 septembre 2018, par Sabha

    I am trying to resize a high res video into 480x ??? and with to maintain aspect ratio and also without losing quality. I wish to maintain the original quality of the video. I tried this command line but it loses quality.

    ffmpeg -i a.mp4 -filter:v scale=480:-1 -c:a copy b.mp4

    I got some filters and options from google search such as -qscale,-sameq etc but it is not working.

    Can you please tell me the exact command ?

    Thanks

    EDIT : I also need to place two videos one below the other and wish to know if there is any such option in ffmpeg coz I cannot find anything on google.

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