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Autres articles (83)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • 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 (...)

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

Sur d’autres sites (15329)

  • FFMpeg set alpha channel transparent for black pixels

    1er avril 2023, par Pete

    I'm using ffmpeg for a bunch of my video workflows. I need to learn how to replace the alpha channel for the black pixels to be transparent. The video I'm working with is ProRes 4444. Here is a link to a
Sample video file. It seems it should be easy but I'm having a hard time figuring out how to do it. Thanks in advance for helping !

    


  • FFMPEG CROP BLACK BARS BAD QUALITY

    9 janvier 2020, par Gustavo Gonzalez

    Hello im using this command to remove the black bars and make the video fullscreen ,

    ffmpeg -i 1.mkv -vf "crop=1920:800:0:140,scale=1920:1080,setsar=1" -c:v h264_nvenc -rc:v vbr_hq -cq:v 0 -b:v 27000k -maxrate:v 26000k -profile:v high -preset slow og1.mkv

    It works good ,
    But the problem is the quality of the video, there is a lot of difference between the original and the new,and apart from that it’s like the video is a bit stretched because of the new crop settings.

  • Video is black when framerate is too low using imageio and Python

    28 juin 2018, par palimboa

    I have the following exmaple code :

    import numpy as np
    
writer = imageio.get_writer('test.mp4', fps=1)
    

    
max = 800
    
resolution = 256
    

    
for idx in range(1, max):
    
    img = np.zeros((resolution,resolution))
    
    img[: int((idx / max) * resolution), : int((idx / max) * resolution)] = 255
    
    img = img.astype(np.uint8)
    
    writer.append_data(img)
    

    
writer.close()

    The video is just black for fps == 1

    What am I missing here ? I cannot see any clues in the documentation saying I cannot have fps = 1 ?

    EDIT

    For fps >= 10 it seems to be fine.

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