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Autres articles (49)

  • Soumettre améliorations et plugins supplémentaires

    10 avril 2011

    Si vous avez développé une nouvelle extension permettant d’ajouter une ou plusieurs fonctionnalités utiles à MediaSPIP, faites le nous savoir et son intégration dans la distribution officielle sera envisagée.
    Vous pouvez utiliser la liste de discussion de développement afin de le faire savoir ou demander de l’aide quant à la réalisation de ce plugin. MediaSPIP étant basé sur SPIP, il est également possible d’utiliser le liste de discussion SPIP-zone de SPIP pour (...)

  • 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

  • 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

Sur d’autres sites (7705)

  • audio/video processing [closed]

    15 juin 2012, par pal_vin

    I want to write a program using ffmpeg where I can take a video (video alongwith audio) as input. Ex. Videos taken by my digicam. THen I want to correct the video frames and stitch back the output video along with an audio. Please tell me how to do it.
    Thanks.

  • Usage of libx264.dll in C++ under windows

    19 janvier 2012, par Anuj

    I have been able to build the libx264 dll from source using hints from here.
    I am successfully able to load the Dll via my application using the LoadLibrary method.
    But when i try to get the address of the methods available via the x264.h header using GetProcAddress(), i always get back NULL.

    Has anyone worked with libx264.dll before in VS or are there any references to some sample code for the same.

  • avconv audio and video out of sync

    28 juillet 2015, par bram_aerts

    I have a problem synchronizing audio and video using avconv.
    My goal is to process the video stream with opencv and later put the original audio back on the soundless video.
    The processed video stream will be at the same period of time as the original video, but will have a starting offset of a few minutes.

    I tried to simplify the problem with the following code :

    filename="inputvideo.mp4"
    
avconv -i $filename -an -ss 30 test.mp4
    
avconv -i test.mp4 -vn -ss 30 -i $filename -async 1 testmerged.mp4

    The second line removing the audio of the original video and shifting it 30 seconds (emulating what the opencv-code will do).
    The last line putting the video and original audio (shifted 30 seconds) back together.

    I assumed if I’d both shift them the same amount of seconds, they would be neatly synchronized, but curiously the video and audio in the resulting movie are out of sync. It is a static delay of about about 3 seconds (audio is behind).
    The same problem appears when making an interim mp3 file and using this as audio track for the resulting movie.

    When searching for a solution I found none that resolve this.
    I tried to overcome this issue by using the -vsync/-async options. But since there is no timestamp information in the video this doesn’t solve the problem.
    Even with the latest static build of ffmpeg the audio and video are still out of sync.

    Is there anything I overlooked or is it just impossible to sync audio and video in ffmpeg ?
    And if so, What would be a decent and simple replacement for the funcionality I’m looking for ?

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