Recherche avancée

Médias (1)

Mot : - Tags -/école

Autres articles (55)

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

  • 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 (...)

  • Création définitive du canal

    12 mars 2010, par

    Lorsque votre demande est validée, vous pouvez alors procéder à la création proprement dite du canal. Chaque canal est un site à part entière placé sous votre responsabilité. Les administrateurs de la plateforme n’y ont aucun accès.
    A la validation, vous recevez un email vous invitant donc à créer votre canal.
    Pour ce faire il vous suffit de vous rendre à son adresse, dans notre exemple "http://votre_sous_domaine.mediaspip.net".
    A ce moment là un mot de passe vous est demandé, il vous suffit d’y (...)

Sur d’autres sites (10453)

  • FFmpeg 16:9 Aspect ratio

    29 mai 2020, par Satish Kumar

    Find the Image attachedI have a video of resolution 1920 x 1080, but it is cropped with black in all sides. I found the crop values as 1440:720:240:208.

    



    But when i apply crop with (1440:720:240:208.), the output video loses some portion of videos along the four sides, which is actually present in original input video.

    



    I want to remove only the black border on all sides, but the output video should cover the 16:9 aspect ratio without losing the actual play area as in input (original) video

    



    pl let provide the ffmpeg syntax for the same.

    


  • ffmpeg confused regarding interlacing

    17 juin 2020, par david furst

    i'm trying to extract some jpeg2000 video from an mxf container, and it seems that ffmpeg is incorrectly interpreting the format as progressive 50fps (it is actually interlaced at 25fps, as confirmed by mediainfo — although to be fair mediainfo reports "Original frame rate : 50.000 FPS"). the result is a video that is only 288 pixels high, rather than the original 576.

    



    i've tried a number of different options, such as -vf tinterlace, bwdif, and manually forcing aspect ratio, height, width, and pixel format, but the results have all been pretty horrible.

    



    what is the (or a) correct way to make ffmpeg understand that the source video should be interpreted as interlaced 576x720 @25fps, and the target video should be output as such ?

    


  • Make blurred background faster with ffmpeg

    26 septembre 2022, par Peter Czask

    I have a vertical videos which I'll like to make them horizontal 1920x1080 with blurred background.

    


    I do it with this command :

    


    ffmpeg -i input.mp4 -vf 'split[original][copy];[copy]scale=ih*16/9:-1,crop=h=iw*9/16,gblur=sigma=20[blurred];[blurred][original]overlay=(main_w-overlay_w)/2:(main_h-overlay_h)/2'  output.mp4 


    


    which that code I'm satisfied with the result, except that it takes very very long time to produce it. Is there any way to speed it up ? I noticed that the blurred part on the background uses half of the overlay video (non blurred), I'll like to blurry just with the edge (or 10 pixels) of the non blurred video (if this makes the encoding faster)...

    


Navigation