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Autres articles (62)

  • Mise à jour de la version 0.1 vers 0.2

    24 juin 2013, par

    Explications des différents changements notables lors du passage de la version 0.1 de MediaSPIP à la version 0.3. Quelles sont les nouveautés
    Au niveau des dépendances logicielles Utilisation des dernières versions de FFMpeg (>= v1.2.1) ; Installation des dépendances pour Smush ; Installation de MediaInfo et FFprobe pour la récupération des métadonnées ; On n’utilise plus ffmpeg2theora ; On n’installe plus flvtool2 au profit de flvtool++ ; On n’installe plus ffmpeg-php qui n’est plus maintenu au (...)

  • Personnaliser en ajoutant son logo, sa bannière ou son image de fond

    5 septembre 2013, par

    Certains thèmes prennent en compte trois éléments de personnalisation : l’ajout d’un logo ; l’ajout d’une bannière l’ajout d’une image de fond ;

  • 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

Sur d’autres sites (11414)

  • Extracting audio of the video frame (C++) [on hold]

    5 septembre 2015, par PaulZyCZ

    Probably stu*** question, but I am looking for a way to extract sound from video frame in C++. Several days ago I had written an interface (in C) to simple DLL library which processes video in OpenCV using Qt5 framework. There is a function which takes frame ID and returns the raw picture data of the frame (so it can be played in Unity using C#). There is however no function to extract corresponding audio. So I am looking for a way to write such a function.

    I am thinking of a way to extract audio from video file (say MP4 with MPEG-4), with length of the corresponding video frame. But so far I have found only tutorials about extracting whole track (via FFMPEG) either to save or play the sound.

    Is there a way to extract only a "frame" (1/fps seconds of audio) ? Or would it be better to create indexes and extract whole track ?

    Thank you for answers.

    PS : Usual questions deal with whole track, not one frame-length sample specified by video frame ID. I have little knowledge of the FFMPEG and it has been several months since I used it last in uni project.

    I have frame, it’s ID, but no sound to it.

    EDIT2 : removed OpenCV tag to lesser the ambivalency. Maybe I am asking stu*** question, so it was put on hold (otherwise I don’t get it).

  • AVI merging with FFmpeg truncated

    6 juin 2012, par Masud Rahman

    I was using FFmpeg to merge two avi files which were converted to AVI from wmv. The conversion from wmv to avi worked fine, but when I am going to merge those two avi files, some part of the longer video is truncated. Also if the first video is without sound, then the merged video is not containing sound at all. What may be the fix ? Please anybody with FFmpeg expertise, help me.

    Note : Command for merging

    ffmpeg -isync -i "concat:file1.avi|file2.avi" -f avi -c copy merged.avi

    Thanks in advance

  • How send only video to bitstream filter trough tee option

    24 août 2018, par Benji Joa

    I want to encode video in mpeg4 format and get two output of it, one in h264 format(without sound) and the other in mpeg4-ts format. I don’t find the option for enable sound in the first output.
    Here my command line :

    ./ffmpeg -i input -map 0 -c:a aac -c:v libx264  -y -f tee "[f=h264:bsfs/v=bitstreamfilter1]out.264|[f=mpegts:bsfs/v=bitstreamfilter2]out.ts"

    Thanks you

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