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  • Supporting all media types

    13 avril 2011, par

    Unlike most software and media-sharing platforms, MediaSPIP aims to manage as many different media types as possible. The following are just a few examples from an ever-expanding list of supported formats : images : png, gif, jpg, bmp and more audio : MP3, Ogg, Wav and more video : AVI, MP4, OGV, mpg, mov, wmv and more text, code and other data : OpenOffice, Microsoft Office (Word, PowerPoint, Excel), web (html, CSS), LaTeX, Google Earth and (...)

  • 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 (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

Sur d’autres sites (3190)

  • lavc/hevc/parser : only split packets on NALUs with nuh_layer_id=0

    7 juin 2024, par Anton Khirnov
    lavc/hevc/parser : only split packets on NALUs with nuh_layer_id=0

    A packet should contain a full access unit, which for multilayer video
    
should contain all the layers.
    • [DH] libavcodec/hevc/parser.c

  • ffmpeg : Split MP3 in 1 second chunks fast ?

    30 décembre 2019, par Niko

    I want to split mp3 into one second chunks fast. I have the mp3 already in memory (in crystal lang) and want to process it further (so I need it in memory after splitting). I got two possiblities working :

    • Saving the file to ram disk, calling ffmpeg -segment on it, reading all the segement files into memory.
    • Piping the file into ffprobe --show_frames and parsing the pkt_pos fields from the result.

    Both are slow about one second due to unnescessary overhead. Writing to disk and reading hundrets of files in the first case, outputting a lot of unneeded information about a lot of unneeded frames in the second.

    I see two possibilities to improve :

    • a custom filter for ffmpeg that outputs the segements with a separator to stdout.
    • a custom filter for ffprobe similar to --show_frames but with a framestep parameter (the existing framestep filter only seems to work with video files) which outputs only the byte offset of the frames.

    Perhaps I’m missing possibilites with the existing filters. Perhaps there is a tool better fitted for my needs than ffmpeg. I’d be happy for any hints.

  • Shortest not working with concat from split video and extra audio track

    27 septembre 2022, par cakedev

    I'm trying to create a video with some speed variations from the source and concat them together at the end while also including an audio track to the result but, I want the audio file to match the length of the concat video, and the result I'm getting is the audio trims at the length of the source video duration, which is the shortest one.
Is there a way to use -shortest so it will only consider the mapped values at the end (concat video and external audio) ?

    


    This is the command I have right now :

    


    ffmpeg.exe -i source.mp4 -i sample.aac -y -filter_complex "[0]split=3[a][b][c];[b]setpts=2.0*PTS,reverse[r];[c]setpts=0.5*PTS[f];[a][r][f]concat=n=3[s]" -shortest -map '[s]' -map 1:a:0 out.mp4


    


    Any help would be really appreciated.

    


    Thanks !

    


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