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  • Submit bugs and patches

    13 avril 2011

    Unfortunately a software is never perfect.
    If you think you have found a bug, report it using our ticket system. Please to help us to fix it by providing the following information : the browser you are using, including the exact version as precise an explanation as possible of the problem if possible, the steps taken resulting in the problem a link to the site / page in question
    If you think you have solved the bug, fill in a ticket and attach to it a corrective patch.
    You may also (...)

  • 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 (...)

  • Organiser par catégorie

    17 mai 2013, par

    Dans MédiaSPIP, une rubrique a 2 noms : catégorie et rubrique.
    Les différents documents stockés dans MédiaSPIP peuvent être rangés dans différentes catégories. On peut créer une catégorie en cliquant sur "publier une catégorie" dans le menu publier en haut à droite ( après authentification ). Une catégorie peut être rangée dans une autre catégorie aussi ce qui fait qu’on peut construire une arborescence de catégories.
    Lors de la publication prochaine d’un document, la nouvelle catégorie créée sera proposée (...)

Sur d’autres sites (6069)

  • Pointer peril

    18 octobre 2011, par Mans — Bugs, Optimisation

    Use of pointers in the C programming language is subject to a number of constraints, violation of which results in the dreaded undefined behaviour. If a situation with undefined behaviour occurs, anything is permitted to happen. The program may produce unexpected results, crash, or demons may fly out of the … Continue reading →

  • What is the difference between yuv420p and yuv420p(tv) ?

    9 novembre 2018, par Aleksandr Shemetillo

    I am trying to implement Fairplay ready browser player (Apple’s DRM).
    A stream that has h264(Main) yuv420p(tv) settings becomes non-working after drm decryption (crashed picture of green color). Converting again the video with a "Main" ffmpeg profile changes the setting to a simple yuv420 and this solves the problem.
    Please explain the difference.
    Or maybe some other changes I don’t see can happen during the conversion ?

    Of course, since we are talking about Fairplay, the problem is observed in Safari on Os X

  • Quicky output selection of video frames using ffmpeg

    1er décembre 2016, par Shaun

    I would like to extract, say, 10 video frames from a given video file using ffmpeg, ideally uniformly distributed throughout the video. I know this can be done in a few ways, for example

    ffmpeg -i input.mp4 -vf fps=1/10 out%03d.jpg

    will output one image every 10 seconds. However, this is too slow for my liking and scales proportionally with the length of the video. I have read a bit about ffmpeg’s seeking capability, for example

    ffmpeg -ss 00:00:05 -i input.mp4 -frames:v 1 out001.jpg

    will very quickly seek to the 5th second of the video and extract one frame. However I haven’t come across a way to seek to multiple locations in the video without calling the above command repeatedly at various times.

    Is there a quicker way of accomplishing this ?

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