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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Contribute to documentation

    13 avril 2011

    Documentation is vital to the development of improved technical capabilities.
    MediaSPIP welcomes documentation by users as well as developers - including : critique of existing features and functions articles contributed by developers, administrators, content producers and editors screenshots to illustrate the above translations of existing documentation into other languages
    To contribute, register to the project users’ mailing (...)

  • Selection of projects using MediaSPIP

    2 mai 2011, par

    The examples below are representative elements of MediaSPIP specific uses for specific projects.
    MediaSPIP farm @ Infini
    The non profit organizationInfini develops hospitality activities, internet access point, training, realizing innovative projects in the field of information and communication technologies and Communication, and hosting of websites. It plays a unique and prominent role in the Brest (France) area, at the national level, among the half-dozen such association. Its members (...)

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  • Using ffprobe to get number of keyframes in raw AVI file *without* processing entire file ?

    26 juillet 2018, par aggieNick02

    This question and answer cover how to get the framecount and keyframe count from an AVI file, which is very useful. I’ve got a raw AVI file and want to count the number of keyframes (equivalent to non-dropped frames for raw AVI), but it takes a long time to process through a raw AVI file.

    There is some way to get this information without fully processing the file, as VirtualDub provides both framecount and key framecount in the file information, as well as total keyframe size, almost instantly for a 25-second raw 1920x1080 AVI. But ffprobe requires count_frames to populate nb_read_frames, which takes some good processing time.

    I can do some math with the file’s size and the frame’s width/height/format to get a fairly good estimate of the number of frames, but I’m worried the overhead of the container could be enough to throw the math off for very short clips. (For my 25 second clip, I get 1286.12 frames, when there are really 1286.)

    Any thoughts on if there is a way to get this information programatically with ffprobe or ffmpeg without processing the whole file ? Or with another API on windows ?

  • Decryption of mp4 file by replacing first 32 bytes with another key file

    17 octobre 2016, par JanviM

    We receive an encrypted video file and a key.header file
    The video will decrypt and become playable after replacing the first 32 bytes of video data with 32 bytes of the key file.

    Few approaches thought of :

    1.As serving video through Nginx,is there any utility/plugin of Nginx which can decrypt the file on the go to manage the load on server.

    2.Using nginx-rtmp module, is there any ffmpeg command available to replace 32 bytes of video file with key file i.e. to make video playable after decrypting.

    Can anyone please suggest how to implement the above approach or any other utility available for making the video playable after decrypting on the go while serving the video through nginx ?

  • libffmpeg C++ : convert file to the same exact format of another file

    12 mars 2015, par Andrea

    what’s the correct way with libffmpeg (if possible with an example) to convert file A into the same aspect/fps/width/height of file B ? I could do that manually, frame by frame, using Cimg or another graphic library to scale it but i’m sure there is a better way to do this and i can’t find any tutorial about conversion.

    I’ve read the drangers tutorial and other resources but i can’t find the right way to do this. (I need to do this via C++, so please don’t suggest to use the command line interface)

    thank you

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