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Médias (91)

Autres articles (110)

  • Support de tous types de médias

    10 avril 2011

    Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)

  • Ajouter des informations spécifiques aux utilisateurs et autres modifications de comportement liées aux auteurs

    12 avril 2011, par

    La manière la plus simple d’ajouter des informations aux auteurs est d’installer le plugin Inscription3. Il permet également de modifier certains comportements liés aux utilisateurs (référez-vous à sa documentation pour plus d’informations).
    Il est également possible d’ajouter des champs aux auteurs en installant les plugins champs extras 2 et Interface pour champs extras.

  • 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 (10208)

  • Revision 3c092e2474 : Merge changes Ibb308526,I99e330f8 * changes : Prevent CR in screen mode from r

    11 septembre 2015, par Alex Converse

    Merge changes Ibb308526,I99e330f8

    * changes :
    Prevent CR in screen mode from refreshing flat inter blocks forever.
    For screen content consider intra uv when color_sensitivity is set.

  • FFmpeg parameters for Fisheye image correction

    19 janvier 2023, par Julio Cesar

    I am trying to achieve two things (any of them will work for my solution) :

    


      

    1. Fisheye video to equirectangular (and view it in 360 view)

      2. 


    2. Fisheye video to flat (if I understood correctly, it will be just like the fisheye image (maybe I will lose some FoV ?) but without distortions. Of course in this case I will not use 360 view).

      3. 


    


    Camera specs : https://documentation.meraki.com/MV/Viewing_Video/Understanding_Image_Quality_on_the_MV32

    


    For test purposes I am using an image as input :

    


    For 1), I am using ffmpeg -i input_file -vf v360=fisheye:e:ih_fov=180:iv_fov=180:pitch=90 output_file. This command gives me a rectangular image where the half upper is black, and when testing in https://renderstuff.com/tools/360-panorama-web-viewer/ the user can navigate through this black space (I would like to limit user view, so he could not get to the black part). If I crop and remove the black part, the image in the 360 view becomes distorted (loses the aspect ratio).

    


    For 2), I tried ffmpeg -i input_file -vf v360=fisheye:flat:ih_fov=180:iv_fov=180 output_file but it doesn't seem to correct the distortions properly.

    


    FYI this video will be published in AntMedia server to be used as an iframe in web applications. I'll try to use 1) in AntMedia since it supports 360 view (https://antmedia.io/play-live-360-degree-video/).

    


    Since I am new to this, please ask for more information if needed.
    
Thanks in advance.

    


  • DXV decoder

    26 août 2015, par Vittorio Giovara
    DXV decoder

    Support all DXDI and DXD3 normal quality videos.
    • [DBH] Changelog
    • [DBH] configure
    • [DBH] doc/general.texi
    • [DBH] libavcodec/Makefile
    • [DBH] libavcodec/allcodecs.c
    • [DBH] libavcodec/avcodec.h
    • [DBH] libavcodec/dxv.c
    • [DBH] libavcodec/version.h
    • [DBH] libavformat/isom.c
    • [DBH] tests/fate/video.mak
    • [DBH] tests/ref/fate/dxv-dxt1
    • [DBH] tests/ref/fate/dxv-dxt5
    • [DBH] tests/ref/fate/dxv3-dxt1
    • [DBH] tests/ref/fate/dxv3-dxt5

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