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  • 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

  • Participer à sa documentation

    10 avril 2011

    La documentation est un des travaux les plus importants et les plus contraignants lors de la réalisation d’un outil technique.
    Tout apport extérieur à ce sujet est primordial : la critique de l’existant ; la participation à la rédaction d’articles orientés : utilisateur (administrateur de MediaSPIP ou simplement producteur de contenu) ; développeur ; la création de screencasts d’explication ; la traduction de la documentation dans une nouvelle langue ;
    Pour ce faire, vous pouvez vous inscrire sur (...)

  • 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 (...)

Sur d’autres sites (3325)

  • Extracting frames from a video created by muxing a bunch of images together is changing the integrity of the frames [closed]

    13 mars 2023, par dreamersparadox

    I am trying to transfer a bunch of images as a video. What I am doing is simply muxing these static images into a video using the following commands.

    



    ffmpeg -framerate 1 -i %02d.jpg -codec copy 1.mkv


    



    After this, I verify the integrity of my static images and the frames in the video using -

    



    ffmpeg -i %02d.jpg -f framehash -


    



    and

    



    ffmpeg -i 1.mkv -map 0:v -f framehash -


    



    I get the same hashes so it means I have archived the images properly. Now next I send this video to my friend who extracts the frames using -

    



    ffmpeg -i 1.mkv mkv%02d.jpg 


    



    Now after extracting the hashes don't remain the same that means the integrity is lost.

    



    How to extract the frames as it is so that integrity is not lost ?

    



    Also if you any other way to achieve what I am trying, please advice.

    



    Here are the hashes.

    


  • ffprobe "moov atom not found" on Linux, but works on OS X

    15 mars 2017, par NeuroXc

    I have an MP4 file that I am trying to read info from via ffprobe -print_format json -show_format -show_streams input.mp4. On OS X with the Homebrew-provided FFMpeg 3.2.4, I’m able to read the video information this way. However, on both Debian Stretch and Arch Linux, with FFMpeg 3.2.4 provided through the respective package managers, I am getting :

    [mov,mp4,m4a,3gp,3g2,mj2 @ 0x55e0b7977120] Format mov,mp4,m4a,3gp,3g2,mj2 detected only with low score of 1, misdetection possible!
    
[mov,mp4,m4a,3gp,3g2,mj2 @ 0x55e0b7977120] moov atom not found
    
input.mp4: Invalid data found when processing input

    An example of a file showing this issue is https://falcon479.startdedicated.com/files/boxes.mp4

  • Unable to import FFmpeg based MediaPlayer

    12 décembre 2018, par Sumi

    I have installed ffmpeg and ffpyplayer on raspberrry pi 3 (raspbain stretch).
    I get an import error when I try to do this :

    from ffpyplayer.player import MediaPlayer

    This is what I get :

    Traceback (most recent call last):
    
  File "<stdin>", line 1, in <module>
    
  File "/home/pi/.virtualenvs/cv/local/lib/python3.5/site-packages/ffpyplayer/player/__init__.py", line 10, in <module>
    
    from ffpyplayer.player.player import MediaPlayer
    

    
ImportError: /home/pi/.virtualenvs/cv/local/lib/python3.5/site-packages/ffpyplayer/player/player.cpython-35m-arm-linux-gnueabihf.so: undefined symbol: x264_levels
    
</module></module></stdin>

    How do I fix this ?

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