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Autres articles (27)

  • 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 (...)

  • List of compatible distributions

    26 avril 2011, par

    The table below is the list of Linux distributions compatible with the automated installation script of MediaSPIP. Distribution nameVersion nameVersion number Debian Squeeze 6.x.x Debian Weezy 7.x.x Debian Jessie 8.x.x Ubuntu The Precise Pangolin 12.04 LTS Ubuntu The Trusty Tahr 14.04
    If you want to help us improve this list, you can provide us access to a machine whose distribution is not mentioned above or send the necessary fixes to add (...)

  • 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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  • Measure how long it takes to encode one h264 encoded Frame

    29 juillet 2015, par user1767754

    I am using libx264 to encode a Video into the h264 format. I am not using any prediction, so there is no analysis on next frames. How can i measure how long it takes to encode one Frame exactly ?

  • Measure how long it takes to encode one h264 encoded Frame

    29 juillet 2015, par user1767754

    I am using libx264 to encode a Video into the h264 format. I am not using any prediction, so there is no analysis on next frames. How can i measure how long it takes to encode one Frame exactly ?

  • Programatically get non-overlapping images from MP4

    15 février 2013, par Carlos F

    My ultimate goal is to get meaningful snapshots from MP4 videos that are either 30 min or 1 hour long. "Meaningful" is a bit ambitious, so I have simplified my requirements.

    The image should be crisp - non-overlapping, and ideally not blurry. Initially, I thought getting a keyframe would work, but I had no idea that keyframes could have overlapping images embedded in them like this :enter image description here

    Of course, some keyframe images look like this and those are much better :

    enter image description here

    I was wondering if someone might have source code to :

    Take a sequence of say 10-15 continuous keyframes (jpg or png) and identify the best keyframe from all of them.

    This must happen entirely programaticaly. I found this paper : http://research.microsoft.com/pubs/68802/blur_determination_compressed.pdf

    and felt that I could "rank" a few images based on the above paper, but then I was dissuaded by this link : Extracting DCT coefficients from encoded images and video given that my source video is an MP4. Of course, this confuses me because the input into the system is just a sequence of jpg images.

    Another link that is interesting is :

    Detection of Blur in Images/Video sequences

    However, I am not sure if this will work for "overlapping" images.

    Any ideas ?

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