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Autres articles (44)

  • Support audio et vidéo HTML5

    10 avril 2011

    MediaSPIP utilise les balises HTML5 video et audio pour la lecture de documents multimedia en profitant des dernières innovations du W3C supportées par les navigateurs modernes.
    Pour les navigateurs plus anciens, le lecteur flash Flowplayer est utilisé.
    Le lecteur HTML5 utilisé a été spécifiquement créé pour MediaSPIP : il est complètement modifiable graphiquement pour correspondre à un thème choisi.
    Ces technologies permettent de distribuer vidéo et son à la fois sur des ordinateurs conventionnels (...)

  • 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 (7558)

  • x264 encoder with JNA

    17 mai 2014, par baba

    I have been busy creating a JNA wrapper around x264.dll. I have the following class for my x264_param_t :

    http://pastebin.com/Mh4JkVpP

    However, when I try to initialize my x264_param_t like that

    x264_param_t param_t = new x264_param_t;

    I get the following error :

    Exception in thread "main" java.lang.IllegalArgumentException: Can't determine size of nested structure: Can't instantiate class anotherReversed.x264_param_t$Vui (java.lang.InstantiationException: anotherReversed.x264_param_t$Vui)
    
        at com.sun.jna.Structure.calculateSize(Structure.java:790)
    
        at com.sun.jna.Structure.allocateMemory(Structure.java:287)
    
        at com.sun.jna.Structure.<init>(Structure.java:177)
    
        at com.sun.jna.Structure.<init>(Structure.java:167)
    
        at com.sun.jna.Structure.<init>(Structure.java:163)
    
        at com.sun.jna.Structure.<init>(Structure.java:154)
    
        at anotherReversed.x264_param_t.<init>(x264_param_t.java:7)
    
</init></init></init></init></init>

    If I comment out the Vui in it’s parent class constructor, the instantiation is ok. I wonder what is different with EXACTLY this nested structure, as there are 2 others (namely Rc and Analyse ) that are nested in the same way. Somehow, though, JNA isn’t able to find the required size for Vui. Any pointers ?

    Edit :
    It seems that all the other nested structs (analyse and rc ) were also not initialized. I wonder why ?

  • How to seek in FFmpeg C/C++

    21 mars 2016, par DRiFTy

    Does anyone know how to implement seeking by seconds (or milliseconds) in FFmpeg. I currently have a loop running through the frames of a video using av_read_frame() and I want to determine what time this frame should be at in seconds. If it gets to a certain point then I want to seek to a later point in the video. By the way it is not a video player, just processing the frames. Ive heard I should be able to get the dts or pts from the packet but its always returning 0.

  • Flash Media Server Recording Delay

    14 novembre 2011, par Corey

    I have an application where a user can record themselves singing along to a song. Once I receive the NetStream status event 'Record.Start' I start playing an audio file. Once the audio completes, I stop recording. Next, I have a script that runs FFMPEG to combine the recorded video/audio with the same music file. The problem I'm finding is that there is a noticeable delay between the recorded audio and the music. It seems also that this delay depends on network speed as it varies depending on the network. Can I determine this delay through the FMS dynamically ?

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