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  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
    Where possible, text is analyzed in order to retrieve the data needed for search engine detection, and then exported as a series of image files.
    All uploaded files are stored online in their original format, so you can (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

  • Configurer la prise en compte des langues

    15 novembre 2010, par

    Accéder à la configuration et ajouter des langues prises en compte
    Afin de configurer la prise en compte de nouvelles langues, il est nécessaire de se rendre dans la partie "Administrer" du site.
    De là, dans le menu de navigation, vous pouvez accéder à une partie "Gestion des langues" permettant d’activer la prise en compte de nouvelles langues.
    Chaque nouvelle langue ajoutée reste désactivable tant qu’aucun objet n’est créé dans cette langue. Dans ce cas, elle devient grisée dans la configuration et (...)

Sur d’autres sites (11949)

  • How can I quantitatively measure gstreamer H264 latency between source and display ?

    10 août 2018, par KevinM

    I have a project where we are using gstreamer , x264, etc, to multicast a video stream over a local network to multiple receivers (dedicated computers attached to monitors). We’re using gstreamer on both the video source (camera) systems and the display monitors.

    We’re using RTP, payload 96, and libx264 to encode the video stream (no audio).

    But now I need to quantify the latency between (as close as possible to) frame acquisition and display.

    Does anyone have suggestions that use the existing software ?

    Ideally I’d like to be able to run the testing software for a few hours to generate enough statistics to quantify the system. Meaning that I can’t do one-off tests like point the source camera at the receiving display monitor displaying a high resolution and manually calculate the difference...

    I do realise that using a pure software-only solution, I will not be able to quantify the video acquisition delay (i.e. CCD to framebuffer).

    I can arrange that the system clocks on the source and display systems are synchronised to a high accuracy (using PTP), so I will be able to trust the system clocks (else I will use some software to track the difference between the system clocks and remove this from the test results).

    In case it helps, the project applications are written in C++, so I can use C event callbacks, if they’re available, to consider embedding system time in a custom header (e.g. frame xyz, encoded at time TTT - and use the same information on the receiver to calculate a difference).

  • Files of ffmpeg after installation on mac

    31 janvier 2018, par Hélder

    While reading this post on motion vector on SO, I went to my mac system files and tried to find the vf_codecview.c and frame.c files but without success.

    Does anyone know where they are located after we install ffmpeg ?

  • Is it possible to pregenerate m3u8 file ? (the playlist only) and skip the transcoding ?

    30 mai 2024, par Jonathan Lightbringer

    I am trying to create a media server, and only want to transcode video when it's played. However I need the playlist in advance so that the client play can load the video metadata. Is this possible ?

    


    I want to do something like this :

    


    Client -> GET m3u8 (pregenerated in advance)
Client -> GET ts -> Transcode only this single ts file
Client -> GET ts -> Transcode only this single ts file
Client -> GET ts -> Transcode only this single ts file


    


    I don't want to transcode the entire video at once, I want to be able to only transcode the part that is requested.

    


    Is this possible ? Also open to using MPEG-DASH instead if needed.

    


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