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  • MediaSPIP version 0.1 Beta

    16 avril 2011, par

    MediaSPIP 0.1 beta est la première version de MediaSPIP décrétée comme "utilisable".
    Le fichier zip ici présent contient uniquement les sources de MediaSPIP en version standalone.
    Pour avoir une installation fonctionnelle, il est nécessaire d’installer manuellement l’ensemble des dépendances logicielles sur le serveur.
    Si vous souhaitez utiliser cette archive pour une installation en mode ferme, il vous faudra également procéder à d’autres modifications (...)

  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

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  • How to generate a video by looping an image and then concat with another very long video without re-encoding using ffmpeg ?

    23 mars 2021, par Linghao Chen

    I have an image and a very long video (1.5h).
Now I want to generate a heading video about 5 seconds by looping the image, and then concatenate it with the long video. Since the video is long, I don't want to re-encode the videos.
I have tried to generate the heading video using

    


    ffmpeg -loop 1 -i image.png -c:v libx264 -t 5 -pix_fmt yuv420p head.mp4


    


    and then

    


    ffmpeg -f concat -i list.txt -c:v copy concat.mp4


    


    where the list.txt contains

    


    file head.mp4
file longvideo.mp4


    


    I have tried these operations on two machines.
On one machine, the concatenated video has no audio. Moreover, it stucks at 5-10 seconds and directly jump to 11s.
On the other machine, the video and audio are not synchronized.

    


    To provide more information, I have checked the codecs of the two videos by

    


    ffprobe -v error -select_streams v:0 -show_entries stream=codec_name \
  -of default=noprint_wrappers=1:nokey=1 xxxxx.mp4


    


    Both of them are h264.

    


    My question is, how to generate it correctly with ffmpeg ? If it is hard using ffmpeg, is there any method to do it fast ? As far as I know, Adobe Premiere and Final Cut Pro do not export as fast as I expect because they re-encode the videos.

    


  • ffmpeg encoded video has video/audio sync delay when uploading to Facebook & WhatsApp

    13 décembre 2019, par royherma
        "fluent-ffmpeg": "^2.1.2",
    
    "ffmpeg": "^0.0.4",
    
    node : 8

    Code to reproduce

    let command = ffmpeg()
    
        .input(tempFilePath)
    
        .input(watermarkFilePath)
    
        .complexFilter([
    
            "[0:v][1:v]overlay=W-w-20:H-h-20"
    
        ])
    
        .videoBitrate(2500)
    
        .videoCodec('libx264')
    
        .audioCodec('aac')
    
        .format('mp4')
    
        .output(targetTempFilePath)

    When applying the ffmpeg encoding command on the attached video, it plays fine on a local device - the issue however is when uploading to Facebook/WhatsApp the audio/video becomes out of sync

    Any ideas on what i need to change in terms of the video/audio settings so that the audio + video are in sync, even when uploaded to the various social networks ?

    Here’s a link to the 3 video files (original, post ffmpeg, post whatsapp upload that includes delay) if you want to get a better idea !

    https://wetransfer.com/downloads/445dfaf0f323a73c56201b818dc0267b20191213052112/24e635

    Thank you and appreciate any help !!

  • Using ffmpeg to cut up video into smaller video with exactly 30 frames

    30 mars 2018, par MonsieurBeilto

    I need to cut a video with >300 frames into ten videos, where the first video comprises the first 30 frames, the second video comprises frames from 31 to 60 and so on.

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