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Médias (1)

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  • Emballe médias : à quoi cela sert ?

    4 février 2011, par

    Ce plugin vise à gérer des sites de mise en ligne de documents de tous types.
    Il crée des "médias", à savoir : un "média" est un article au sens SPIP créé automatiquement lors du téléversement d’un document qu’il soit audio, vidéo, image ou textuel ; un seul document ne peut être lié à un article dit "média" ;

  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • 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 (4497)

  • ffmpeg output file smaller than input file

    3 mai 2020, par Debug255

    I am using ffmpeg to rotate videos 90 or 180 degrees in a Python script. It works great. But, I am curious as to why the output file would be a smaller amount of bytes than the input file.

    



    Here are the commands I use :

    



    180 degrees :

    



    ffmpeg -i ./input.mp4 -preset veryslow -vf "transpose=2,transpose=2,format=yuv420p" -metadata:s:v rotate=0 -codec:v libx264 -codec:a copy ./output.mp4

    



    90 degrees :

    



    ffmpeg -i ./input.mp4 -vf "transpose=2" ./output.mp4

    



    For example, a GoPro Hero 3 MP4 file was originally 2.0 GB. The resulting output file was 480.9 MB. Another GoPro file was 2.0 and its resulting file was 671.5 MB. Is this maybe because the GoPro files were 2.0 but contains empty space, sort of like how some NTFS filesystems make a minimal 4k file, even when there is less bytes in it ?

    



    If this isn't the GoPro Hero 3, how do I rotate the files 90 or 180 degrees but ensure the output file size is the same ? Or, is data loss expected ? Does the data loss have to do with the format ?

    



    Note that the quality of the video doesn't appear to be damaged, which is good. So, I am interested in learning more about why this is happening, then I can read the section of ffmpeg documentation that is relevant to this.

    



    Thank you !

    


  • Extract frame from video - PHP-FFMpeg

    7 mars 2016, par cchacholiades

    I am using php ffmpeg in a laravel project, to do multiple things probe, extract frame and encode. I am having an issue when creating a frame from the uploaded video file.
    This is how the frame is created :

        $video = $ffmpeg->open($destinationPath.'/'.$filename);
    

    
    $video
    
        ->frame(FFMpeg\Coordinate\TimeCode::fromSeconds(10))
    
        ->save(public_path().$frame_path);

    This is sometimes working and creates the frame but other times is not. I noticed that this bug comes up when I am trying to open a .mov file.

  • Extract frame from video - PHP-FFMpeg

    29 septembre 2018, par cch

    I am using php ffmpeg in a laravel project, to do multiple things probe, extract frame and encode. I am having an issue when creating a frame from the uploaded video file.
    This is how the frame is created :

        $video = $ffmpeg->open($destinationPath.'/'.$filename);
    

    
    $video
    
        ->frame(FFMpeg\Coordinate\TimeCode::fromSeconds(10))
    
        ->save(public_path().$frame_path);

    This is sometimes working and creates the frame but other times is not. I noticed that this bug comes up when I am trying to open a .mov file.

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