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Autres articles (59)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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 (...)

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

Sur d’autres sites (11337)

  • Compression rate (final size) ffmpeg with h263 as codec, can be improved ?

    29 août 2013, par voskyc

    With the following data :

    Sample 1 :
    vcodec : H263
    Duration : 4seconds
    Resolution:1288/720
    FR : 30fps/s
    datarate : 195.135 kB/s
    MP3 : 44HZ, 16bits

    Size file : 5.84MB.

    Sample 2 :
    vcodec : H263
    Duration : 4seconds
    Resolution:640/480
    FR : 30fps/s
    datarate : 195.135 kB/s
    MP3 : 44HZ, 16bits

    Size file = 3.34MB.

    Both in flv container.

    Aren't those sizes a little bit high for 4 second video ?

    I believe we are doing some kind of error or missing an optimization.
    Should we decrease the datarate ?
    Maybe we are missing some option for h263 encoding with FFMPEG ?.

    Thanks a lot in advance for your suggestions.

    Note : no, we "can not" use h264. :-)

  • MoviePy : Concatenating video clips causes weird glitches in final video

    16 mai 2022, par JohnSmithy1266

    Is there a way to successfully always patch up any clips together in such a way that prevents weird glitches ? I put together a .mp4 from smaller .mp4 files and I got a final video with weird glitches. I am running Python 3.6.1 on Windows 10 through Sublime Text 3. I used MoviePy to do the concatenation.

    



    The code :

    



    from moviepy.editor import VideoFileClip, concatenate_videoclips
import os.path

path = "C:/Users/blah/videos/out/"

cliparray = []

for filename in os.listdir(path):
    cliparray.append(VideoFileClip(path + filename))

final_clip = concatenate_videoclips(cliparray)

final_clip.write_videofile(path + "concatenatedvideo.mp4", codec = "libx264")


    



    The weird glitches :

    



      

    1. One of the clips turns into a 3x3 grid of smaller clips.

      2. 


    2. Another has the audio not lined up with the video

      3. 


    3. Another is sped up faster than what was normal.

      4. 


    


  • Anomalie #4708 : Comportement du modèle différent en 3.3

    30 mars 2021, par Fabrice Véronneau

    Après comparaisons sur 2 sites en 3.3 et avec 2 comportements différents, puis de multiples vidages de cache (spip, varnish, navigateurs) j’arrive au même résultat qu’en 3.2.
    Selon moi, ce ticket n’aurait donc plus lieu d’être puisque je ne reproduis plus le bug.

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