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  • Automated installation script of MediaSPIP

    25 avril 2011, par

    To overcome the difficulties mainly due to the installation of server side software dependencies, an "all-in-one" installation script written in bash was created to facilitate this step on a server with a compatible Linux distribution.
    You must have access to your server via SSH and a root account to use it, which will install the dependencies. Contact your provider if you do not have that.
    The documentation of the use of this installation script is available here.
    The code of this (...)

  • 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 (...)

  • Changer son thème graphique

    22 février 2011, par

    Le thème graphique ne touche pas à la disposition à proprement dite des éléments dans la page. Il ne fait que modifier l’apparence des éléments.
    Le placement peut être modifié effectivement, mais cette modification n’est que visuelle et non pas au niveau de la représentation sémantique de la page.
    Modifier le thème graphique utilisé
    Pour modifier le thème graphique utilisé, il est nécessaire que le plugin zen-garden soit activé sur le site.
    Il suffit ensuite de se rendre dans l’espace de configuration du (...)

Sur d’autres sites (8854)

  • Imageio unable to read webcam at correct framerate

    28 mai 2019, par Jason Nick Porter

    I’m trying to read frames from a webcam and analyze them in realtime, but since my function AnalyzeFrame() is faster than the framerate, it ends up pulling the same frame 1-4 times in a row, messing up my data. Here’s basically what I’m running.

    import imageio
    

    
cam = imageio.get_reader('<video0>', fps=30)
    

    
while not cam.closed:
    
    print(AnalyzeFrame(cam.get_next_data()))
    
</video0>

    A few notes : My webcam should be able to handle 30fps, but I’m averaging 12-14 fps. I’ve timed each individual process and there’s very little regularity to the framerate. Some frames only get analyzed once, because they’re in the buffer for 20 or so milliseconds. Others get analyzed 4 times over a span of 100+ ms. Is there something in my code that’s causing this framerate problem ?

  • Add metadata to flv files with ffmpeg instead of flvmdi

    30 juillet 2012, par user1476852

    I have made a player for stream flv movies in flash with netstream but it needs some metadata information named " keyframe " containing two array of times and positions , some flv videos have this meta data and some not , i could add the keyframe metadata with a program named "flvmdi" and player worked properly , but i can`t install this software on my server for some reasons.
    I know that we can add metadata to a movie with ffmpeg function in PHP .
    Can i use ffmpeg function in PHP to add keyframe arrays as metadata to flv file ?
    How can we make times and positions arrays to inject to a flv file with ffmpeg in php ?

  • ffmpeg mp4 cut from correct point | without encode

    3 mars 2018, par sword1st

    I’m using this this command for cut my mp4 video :

    ffmpeg -i clip.mp4 -ss 00:00:25 -to 00:01:20 -c copy cutted.mp4

    But there is a problem with this code. My "cutted" clip has black video for a couple seconds and it’s have sync problem on editing software. When i tweak the first parameter -ss like 00:00:24 ... 00:00:23 .... 00:00:26 etc when i found the right position it doesn’t have any black frame or sync problem. I want to learn how can i learn all of this correct times for my video ? I don’t know what should i call these points. Gop or anything else. Is there any solution built-in ffmpeg to learn this times so i can cut them without any corruption ? Thanks !

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