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  • Publier sur MédiaSpip

    13 juin 2013

    Puis-je poster des contenus à partir d’une tablette Ipad ?
    Oui, si votre Médiaspip installé est à la version 0.2 ou supérieure. Contacter au besoin l’administrateur de votre MédiaSpip pour le savoir

  • Les formats acceptés

    28 janvier 2010, par

    Les commandes suivantes permettent d’avoir des informations sur les formats et codecs gérés par l’installation local de ffmpeg :
    ffmpeg -codecs ffmpeg -formats
    Les format videos acceptés en entrée
    Cette liste est non exhaustive, elle met en exergue les principaux formats utilisés : h264 : H.264 / AVC / MPEG-4 AVC / MPEG-4 part 10 m4v : raw MPEG-4 video format flv : Flash Video (FLV) / Sorenson Spark / Sorenson H.263 Theora wmv :
    Les formats vidéos de sortie possibles
    Dans un premier temps on (...)

  • 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 7450275755 : Setup pre[0] buffer before calls to {first_pass, zz}_motion_search. Change-Id :

    23 janvier 2014, par Dmitry Kovalev

    Changed Paths :
     Modify /vp9/encoder/vp9_firstpass.c



    Setup pre[0] buffer before calls to first_pass, zz_motion_search.

    Change-Id : I9b94e741201eacb1982014724a532bdaae31f130

  • Suggestions for an open source non-linear video editor that runs in the command line in Linux that will achieve layering of videos, audio, and photos [closed]

    20 juillet 2022, par Ota-Coder

    I need an open source non-linear video editor that runs in the command line in Linux that will achieve layering of videos, audio, and photos.

    


    What I’m trying to achieve in the end is like a talking heads version of comments on youtube that there would be conversations.

    


    So far, I’ve tried using python opencv combined with ffmpeg xfade transitions using the script I found here - https://stackoverflow.com/a/70043923/13826771 - but sadly, it is linear editing (?) and the result is something like this which doesn’t look like talking heads that are having a conversation - https://streamable.com/bpbbsy

    


    So far I have looked into MLT / Melt but I’m really puzzled and confused about how I should achieve the talking head conversation.

    


    Any help would be appreciated

    


  • How do I edit my video files this way using FFMPEG ?

    3 mars 2023, par alex.

    I want to take two video files (normal.mp4, layout.mp4) and edit them in multiple steps like this :

    


      

    1. Take normal.mp4 and reduce the video and audio speed to 50%, and copy it (as slow.mp4 for example)

      2. 


    2. Add fade in and fade out to all three files

      3. 


    3. Combine the files, in the order : normal.mp4, slow.mp4, layout.mp4

      4. 


    4. Output into one video called output.mp4

      5. 


    


    I'd like for this to all be done in one FFMPEG command, but if that's not possible that is fine. I would like to keep the audio bitrate of the slow.mp4 file at 320kbs, while also outputting the final product at 60fps (normal.mp4 and layout.mp4 and 120fps mp4 files)

    


    I tried to edit just one to halve the speed and add fade in/fade out, however I was having issues with errors there.

    


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