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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 (...)

  • 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 (...)

  • 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 (...)

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  • Revision 340c7a48e6 : Change to segment ref frame feature. Simplify feature to only support a single

    7 juin 2013, par Paul Wilkins

    Changed Paths :
     Modify /vp9/common/vp9_seg_common.c


     Modify /vp9/common/vp9_seg_common.h


     Modify /vp9/decoder/vp9_decodemv.c


     Modify /vp9/encoder/vp9_bitstream.c


     Modify /vp9/encoder/vp9_encodeframe.c


     Modify /vp9/encoder/vp9_onyx_if.c


     Modify /vp9/encoder/vp9_rdopt.c



    Change to segment ref frame feature.

    Simplify feature to only support a single reference frame
    instead of a mask.

    Change-Id : I5dd3a98c7a224aafb35708850ab82e2f220e68fb

  • (FFMPEG) Make areas transparent before overlaying a vid with perspective

    7 octobre 2020, par aaeim

    I'm trying to add perspective to a small video then overlay it on top of an other.

    



    So far I can make the video small, add perspective to it and overlay it to an other video. but after applying the perspective filter, the excess areas don't turn transparent, they just stretch out the pixels.

    



    the perspective filter doesn't have much documentation but as far as i could find out there was no way of setting the extra pixels to transparent.

    



    So I'm guessing ill need to apply some kind of alpha mask, to the desired area ?

    



    this is the command I'm using for perspective :

    



    ffmpeg -i /synced_folder/testvid.mp4 -vf perspective=0:0:W:H/4:0:H:W:3*H/4:0:1:0 /synced_folder/output5.mp4


    



    Don't think it matters but I'm running ffmpeg on a VM with centOS.

    



    This is a SS of how the result looks like :

    


  • (FFMPEG) Make areas transparent before overlaying a vid with perspective

    3 août 2016, par aaeim

    I’m trying to add perspective to a small video then overlay it on top of an other.

    So far I can make the video small, add perspective to it and overlay it to an other video. but after applying the perspective filter, the excess areas don’t turn transparent, they just stretch out the pixels.

    the perspective filter doesn’t have much documentation but as far as i could find out there was no way of setting the extra pixels to transparent.

    So I’m guessing ill need to apply some kind of alpha mask, to the desired area ?

    this is the command I’m using for perspective :

    ffmpeg -i /synced_folder/testvid.mp4 -vf perspective=0:0:W:H/4:0:H:W:3*H/4:0:1:0 /synced_folder/output5.mp4

    Don’t think it matters but I’m running ffmpeg on a VM with centOS.

    This is a SS of how the result looks like :

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