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Médias (16)

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  • Le plugin : Podcasts.

    14 juillet 2010, par

    Le problème du podcasting est à nouveau un problème révélateur de la normalisation des transports de données sur Internet.
    Deux formats intéressants existent : Celui développé par Apple, très axé sur l’utilisation d’iTunes dont la SPEC est ici ; Le format "Media RSS Module" qui est plus "libre" notamment soutenu par Yahoo et le logiciel Miro ;
    Types de fichiers supportés dans les flux
    Le format d’Apple n’autorise que les formats suivants dans ses flux : .mp3 audio/mpeg .m4a audio/x-m4a .mp4 (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

  • Librairies et logiciels spécifiques aux médias

    10 décembre 2010, par

    Pour un fonctionnement correct et optimal, plusieurs choses sont à prendre en considération.
    Il est important, après avoir installé apache2, mysql et php5, d’installer d’autres logiciels nécessaires dont les installations sont décrites dans les liens afférants. Un ensemble de librairies multimedias (x264, libtheora, libvpx) utilisées pour l’encodage et le décodage des vidéos et sons afin de supporter le plus grand nombre de fichiers possibles. Cf. : ce tutoriel ; FFMpeg avec le maximum de décodeurs et (...)

Sur d’autres sites (6019)

  • FFmpeg - What muxer do i need to save an AAC audio stream

    3 août 2022, par David Barishev

    I'm developing Android application, and im using ffmpeg for conversion of files.
    
I want my binary file to be as slim as possible since i don't have many input formats and output formats, and my operation is quite basic.And of course not to bloat the APK.

    



    In my program ffmpeg receives a file, and copys the audio stream (-acodec copy), the audio stream will always be aac (mp4a). What i need is to save the stream to file.
    
My command looks like this : ffmpeg -i {Input} -vn -acodec copy output.aac.

    



    What muxer do i need to for muxing aac to file ? I have tried flv,mp3,mov but i always get
    
Unable to find a suitable output format for 'output.aac', so these options are wrong.
    
I don't need an encoder for stream copy btw.

    



    Side note : this command work flawlessly on full installation of ffmpeg , but I don't know which muxer it uses. If there is a way to output the muxer it uses from regular ffmpeg run, it would work too.

    


  • android ffmpeg synchronize thread

    28 juin 2018, par Junburg

    I’m currently working on cutting and pasting audio with ffmpeg on Android. The problem is that when one audio file is not finished, there are other working files that need to be executed. I think the error below means this. I work through threads. An expression that executes a thread whenever there is a file to be processed.

    W/System.err: com.github.hiteshsondhi88.libffmpeg.exceptions.FFmpegCommandAlreadyRunningException: FFmpeg command is already running, you are only allowed to run single command at a time
    
W/System.err:     at com.github.hiteshsondhi88.libffmpeg.FFmpeg.execute(FFmpeg.java:63)
    
              at com.github.hiteshsondhi88.libffmpeg.FFmpeg.execute(FFmpeg.java:89)
    
              at com.softcode.tablet.Mp3Concat_Thread$2.run(Mp3Concat_Thread.java:614)
    
              at java.lang.Thread.run(Thread.java:762)

    So what I want to ask is how to synchronize if a file comes in when the thread’s work is not over yet. Since the ffmpeg object is created with a singleton pattern, it seems that you will not be able to create a new object for each operation.

    If you know the answer, I would appreciate your reply.

  • How to build ffmpeg.js via provided Unix code in Cygwin ?

    30 juin 2020, par rusty grad

    I am trying to build ffmpeg.js and add it to my program in windows. Docker does not work on my version of windows. The creator provided how to build it in Unix on his github page as follows :

    


    sudo apt-get update
sudo apt-get install -y git python build-essential automake libtool pkg-config
cd ~
git clone https://github.com/emscripten-core/emsdk.git && cd emsdk
./emsdk install latest
./emsdk activate latest
source emsdk_env.sh
cd ~
git clone https://github.com/Kagami/ffmpeg.js.git --recurse-submodules && cd ffmpeg.js
make


    


    How do I execute this command in Cygwin, or is there an easier way to incorporate FFMPEG or a competitor into a simple javascript client side operation ? I just need to run audio concatenation, which i confirmed works in cmd with FFMPEG :

    


    ffmpeg -i "concat:input1.mp3|input2.mp3|input3.mp3" -acodec copy output.mp3


    


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