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  • Personnaliser les catégories

    21 juin 2013, par

    Formulaire de création d’une catégorie
    Pour ceux qui connaissent bien SPIP, une catégorie peut être assimilée à une rubrique.
    Dans le cas d’un document de type catégorie, les champs proposés par défaut sont : Texte
    On peut modifier ce formulaire dans la partie :
    Administration > Configuration des masques de formulaire.
    Dans le cas d’un document de type média, les champs non affichés par défaut sont : Descriptif rapide
    Par ailleurs, c’est dans cette partie configuration qu’on peut indiquer le (...)

  • 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 (...)

  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

Sur d’autres sites (6364)

  • Generating movie from python without saving individual frames to files

    8 avril 2015, par Paul

    I would like to create an h264 or divx movie from frames that I generate in a python script in matplotlib. There are about 100k frames in this movie.

    In examples on the web [eg. 1], I have only seen the method of saving each frame as a png and then running mencoder or ffmpeg on these files. In my case, saving each frame is impractical. Is there a way to take a plot generated from matplotlib and pipe it directly to ffmpeg, generating no intermediate files ?

    Programming with ffmpeg’s C-api is too difficult for me [eg. 2]. Also, I need an encoding that has good compression such as x264 as the movie file will otherwise be too large for a subsequent step. So it would be great to stick with mencoder/ffmpeg/x264.

    Is there something that can be done with pipes [3] ?

    [1] http://matplotlib.sourceforge.net/examples/animation/movie_demo.html

    [2] http://stackoverflow.com/questions/2940671

    [3] http://www.ffmpeg.org/ffmpeg-doc.html#SEC41

  • Generating movie from python without saving individual frames to files

    8 avril 2015, par Paul

    I would like to create an h264 or divx movie from frames that I generate in a python script in matplotlib. There are about 100k frames in this movie.

    In examples on the web [eg. 1], I have only seen the method of saving each frame as a png and then running mencoder or ffmpeg on these files. In my case, saving each frame is impractical. Is there a way to take a plot generated from matplotlib and pipe it directly to ffmpeg, generating no intermediate files ?

    Programming with ffmpeg’s C-api is too difficult for me [eg. 2]. Also, I need an encoding that has good compression such as x264 as the movie file will otherwise be too large for a subsequent step. So it would be great to stick with mencoder/ffmpeg/x264.

    Is there something that can be done with pipes [3] ?

    [1] http://matplotlib.sourceforge.net/examples/animation/movie_demo.html

    [2] http://stackoverflow.com/questions/2940671

    [3] http://www.ffmpeg.org/ffmpeg-doc.html#SEC41

  • ffmpeg - convert video into individual frame image files ? [closed]

    2 janvier 2021, par MrFunreal

    i am trying to turn every single frame of a video file into png files using ffmpeg.
i have found several guides on how to do that, most of which look the same, by doing this :

    


    


    ffmpeg -i vid.mp4 frames/out%03d.png

    


    


    However, this does not work. FFmpeg for some reason just replaces the "%0" of the output file with the entire path of the bat file and then tells me that's wrong, like so :

    


    


    [image2 @ 000002c6aa87f680] Could not open file :
frames/outG :\Videos\vid_to_frames\3_video_to_frames.bat3d.jpg
av_interleaved_write_frame() : I/O error

    


    


    If i remove the "%0" of the output file it creates a single frame and gives me an error, telling me i need to put the "%03d" into the name, which doesn't work.

    


    


    [image2 @ 000001dc9a09fd40] Could not get frame filename number 2 from
pattern '$filename3d.png'. Use '-frames:v 1' for a single image, or
'-update' option, or use a pattern such as %03d within the filename.
av_interleaved_write_frame() : Invalid argument

    


    


    Is this just broken ?
I found about 20 guides on how to do it, all of which use this exact same method and it just doesn't work.

    


    Does anyone know another way to do this via ffmpeg ? (it must be via ffmpeg)

    


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