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Autres articles (33)

  • 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

  • HTML5 audio and video support

    13 avril 2011, par

    MediaSPIP uses HTML5 video and audio tags to play multimedia files, taking advantage of the latest W3C innovations supported by modern browsers.
    The MediaSPIP player used has been created specifically for MediaSPIP and can be easily adapted to fit in with a specific theme.
    For older browsers the Flowplayer flash fallback is used.
    MediaSPIP allows for media playback on major mobile platforms with the above (...)

  • De l’upload à la vidéo finale [version standalone]

    31 janvier 2010, par

    Le chemin d’un document audio ou vidéo dans SPIPMotion est divisé en trois étapes distinctes.
    Upload et récupération d’informations de la vidéo source
    Dans un premier temps, il est nécessaire de créer un article SPIP et de lui joindre le document vidéo "source".
    Au moment où ce document est joint à l’article, deux actions supplémentaires au comportement normal sont exécutées : La récupération des informations techniques des flux audio et video du fichier ; La génération d’une vignette : extraction d’une (...)

Sur d’autres sites (6785)

  • Is there an easy way to trace the calls made in the libav libraries based on the ffmpeg command line command ?

    6 novembre 2023, par railsnoob

    I was successful in using FFMPEG to manipulate my input data from the command line, but now I'd like to do the same exact thing using the libav libraries (libavcodec, libavutils, libavformat, etc.) so I can call them from my C++ program. I was curious if there is an easy way to trace it without having to dig through the repo ?

    


    One of the commands was : ffmpeg -i example.ts -vf fps=10 ./frame_%04d.png

    


    I am now following a tutorial to do something similar, but this just seems like a long way to duplicate something ffmpeg is already doing from the command line.

    


    Tutorial link : https://github.com/leandromoreira/ffmpeg-libav-tutorial

    


  • Separating audio m4b file based on a cue file

    10 avril 2024, par Rick T

    Separating audio m4b file based on a cue file

    


    How can I split an audio m4b into separate files using a cue file ?

    


    Note : The m4b file has no chapters that's why I need to use the cue file to split it.

    


    I did try AI but that didn't work.

    


    ffmpeg -i test.m4b -f segment -segment_times test.cue -c copy output_%02d.m4a


    


    I get errors.

    


    


    Invalid time duration specification 'test.cue' in times list test.cue
Could not write header for output file #0 (incorrect codec parameters
 ?) : Invalid argument

    


    


    The thing is I can load the cue file in vlc and play the different chapters without issues.

    


  • Fffmpeg mapping audio and video by language

    28 mars 2017, par Terrabyte

    I want to batch convert these mkv files, they contain more than one language. Instances include : Eng/Ger, Eng/JPN. Sometimes there are multiple video sources within the mkv for whatever reason :

    ive tried using :

    FFMPEG_PATH . ' -i ' . $localFile . ' -sn -map 0:v:0 -map 0:a:m:language:jpn -c:v ' . $videoCodec . ' -tune animation -crf 20 -refs 6 -bf 6 -trellis 1 -b_strategy 1 -profile:v high -level 4.0 -pix_fmt yuv420p -ac 2 -flags +aic+mv4 ' . $scale . ' ' . $convertedFilename;

    This one grabs the first video (this doesnt matter, but i need it to grab one video just in case)

    -map 0:v:0 -map

    I don’t thing this one works because when i tried it, it grabbed the english one instead so i dont know the issue.

    0:a:m:language:jpn

    I could do

    0:m:language:jpn

    but then id have to remove : 0:v:0 and sometimes theres a issue where just using the general mapping would encode both video sources so it wold double in file sizes

    so how would i just map the audio file while keeping the video mapping ?
    Fgmpeg is really confusing with this instruction.

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