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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

  • 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 (...)

  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

Sur d’autres sites (8996)

  • With apulsator in ffempeg - How do I make so one side does not completely become silent ?

    3 avril 2022, par corgrath

    I am trying to learn more about signal processing and the apulsator effect in ffmpeg.

    


    http://ffmpeg.org/ffmpeg-filters.html#apulsator

    


    With the most default example :

    


    ffmpeg -y -i input.mp3 -af "apulsator=hz=0.0625:timing=hz:mode=sine" output.mp3

    


    You can clearly hear that the sound travels from left to right and then back to left, as expected.

    


    However, I am trying to understand how/if it is possible that sound volume does not completely becomes silent, but perhaps 10% of the volume, while the other side gets 90%.

    


    What I am trying to achieve is that one side does not completely becomes silent.

    


    If this cannot be achieved solely by the apulsator settings, what other effects or ways can I achieve this using ffmpeg ?

    


    Any advice is appreciated !

    


  • 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. 


    2. Videos (with audio)

      3. 


    3. Other animations/effects

      4. 


    



    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.

    


  • build : Allow generating dependencies as a side-effect of assembling

    13 octobre 2016, par Diego Biurrun
    build : Allow generating dependencies as a side-effect of assembling

    (Cherry-picked from libav commit 3c0efbd03349ae68d3a25a082222652a102e3fd4)
    

    Signed-off-by : James Almer <jamrial@gmail.com>
    • [DH] configure
    • [DH] ffbuild/common.mak

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