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Autres articles (96)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • 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 (...)

Sur d’autres sites (10167)

  • Best way to record a HTML Canvas/WebGL animation server-side into a video ?

    14 décembre 2016, par Abhinav

    I have a set of animations which I can make in Canvas (fabric.js) or WebGL (three.js). I need to record them automatically, server-side, through a script and output a video file.

    The animations include :

    1. Pictures
    2. Videos (with audio)
    3. Other animations/effects

    I have researched a lot during last few months on this.

    Results
    1. User PhantomJS + FFMPEG
    Run HTML Canvas animations on headless browser(PhantomJS) and record with FFMPEG. Here the issue is PhantomJS supports neither WebGL nor Video element. http://phantomjs.org/supported-web-standards.html

    2. Use Websockets to send data back to server using DataURL
    Here again, we will need to run the animations on browser (which we can’t because we have to do everything on server).

    3. Use node-canvas
    This is a library by TJ Holowaychuk which allows rendering HTML Canvas on Node.js. But it has its own limitations plus I haven’t really explored this field much.
    (If someone could shed more light on this library)

    If anyone has done it before or can guide me somewhere useful.
    All we need to do is use some data to create animations and record it into a video, everything on server side.

  • Best way to record a HTML Canvas/WebGL animation server-side into a video ?

    19 novembre 2022, par Abhinav

    I have a set of animations which I can make in Canvas (fabric.js) or WebGL (three.js). I need to record them automatically, server-side, through a script and output a video file.

    



    The animations include :

    



      

    1. Pictures
    2. 


    3. Videos (with audio)
    4. 


    5. Other animations/effects
    6. 


    



    I have researched a lot during last few months on this.

    



    Results
    
1. Use PhantomJS + FFMPEG
    
Run HTML Canvas animations on headless browser(PhantomJS) and record with FFMPEG. Here the issue is PhantomJS supports neither WebGL nor Video element. http://phantomjs.org/supported-web-standards.html

    
2. Use Websockets to send data back to server using DataURL
    
Here again, we will need to run the animations on browser (which we can't because we have to do everything on server).

    
3. Use node-canvas
    
This is a library by TJ Holowaychuk which allows rendering HTML Canvas on Node.js. But it has its own limitations plus I haven't really explored this field much. 
(If someone could shed more light on this library)

    



    If anyone has done it before or can guide me somewhere useful.
    
All we need to do is use some data to create animations and record it into a video, everything on server side.

    


  • With ffmpeg print onto clipped video hh:mm:ss time *from original* and hh:mm:ss total duration from original

    25 mai 2023, par Kes

    I am using arch linux and bash and ffmpeg, all are up to date and the latest versions.

    


    I am clipping a video that is 30 seconds long and wish to clip from 5 secs to 10 seconds to a new file, from the original.

    


    In the bottom right hand corner of the clip I wish to show timestamps from the original video as follows

    


      

    • in the 5th second "00:00:05/ 00:00:30"
    • 


    • in the 6th second "00:00:06/ 00:00:30"
      
etc
    • 


    • in the 10th second "00:00:10/ 00:00:30"
    • 


    


    This is an apparentley simple question(?) but the syntax of the command is not at all obvious and I am hoping an expert may shed some light on this.

    


    All I have so far for the drawtext part, which does not do what I want as it only counts the elapsed time from t=0 of the new clip, whereas I want it to show the timestamp and total duration of the original clip

    


    drawtext I started with

    


    "drawtext=text='%{pts\:gmtime\:0\:%M\\\\\:%S}':fontsize=24:fontcolor=black:x=(w-text_w-10):y=(h-text_h-10)"


    


    ffmpeg line with drawtext I have started with

    


    ffmpeg -ss 00:00:05 -i  "$in_file" -filter_complex "drawtext=fontfile=font.ttf:text='sample text':x=10:y=10:fontsize=12:fontcolor=white:box=1:boxcolor=black@0.5:boxborderw=5,drawtext=text='%{duration\:hms}':fontsize=12:fontcolor=black:x=(w-text_w-10):y=(h-text_h-10)" -t 5 -c:a copy -c:v libx264 out_file.mp4