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  • Les tâches Cron régulières de la ferme

    1er décembre 2010, par

    La gestion de la ferme passe par l’exécution à intervalle régulier de plusieurs tâches répétitives dites Cron.
    Le super Cron (gestion_mutu_super_cron)
    Cette tâche, planifiée chaque minute, a pour simple effet d’appeler le Cron de l’ensemble des instances de la mutualisation régulièrement. Couplée avec un Cron système sur le site central de la mutualisation, cela permet de simplement générer des visites régulières sur les différents sites et éviter que les tâches des sites peu visités soient trop (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

    Cette page présente quelques-uns des sites fonctionnant sous MediaSPIP.
    Vous pouvez bien entendu ajouter le votre grâce au formulaire en bas de page.

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (7950)

  • hnm4 : change width/height to int to fix hypothetical integer overflows

    12 novembre 2014, par Michael Niedermayer
    hnm4 : change width/height to int to fix hypothetical integer overflows

    CC : libav-stable@libav.org
    
Bug-Id : CID 1135770 / CID 1135771
    • [DH] libavcodec/hnm4video.c

  • Live video encoding using...?

    27 décembre 2013, par Basic

    I'm attempting to write a fairly simplistic application that will stream video/audio from a webcam to someone else across the internet (ala Skypebut with more control).

    There seems to be very little useful/relevant information on the subjectand what I can find is largely outdated. From my research so far, x264 seems to be the way to go as it offers an ultrafast option which is designed for this situation

    I'm able to turn on the webcam and receive a stream of images. I can also listen on an audio device and get samples.

    Where I'm failing is encoding that information in such a way as to be able to stream with a minimum of latency (from what I've read, 200ms delay is the goal for no obvious lag, including network latency - so let's aim for 100-150ms)

    Things I've tried

    ffmpeg

    This seems to be the most widely used option for encoding. I've had two real issues using it. Firstly, even using x264 with no look-aheads and the bare minimum buffers for stability, the delay seems to be on the order of 700ms using image2pipe. Secondly, it requires ffmpeg to be installed - being able to do this without an external dependency would be nice.

    VLC

    As with ffmpeg this requires an external program which is a negative. Even worse, I can't seem to get a latency of under 2 seconds which seems to increase over time. I've also only been able to get VLC to capture the camera itself rather than take a stream of images which means I don't get a chance to pre-process them.

    DirectShow

    I've seen a number of sites recommending using the windows direct show encoders but I haven't been able to find one that works at anything like real time. In fact, the only one I've managed to get going reliably is a Windows Media codec that has a massive latency and fairly large size.

    Other considerations

    None of the above address the problem of adding an audio stream to the video. I'm not sure if I should attempt to encode them together or send a separate stream alongside the video.

    In short, I've been Googling for a week or so now and haven't found a decent way to do this. Can someone please point me at a decent example/guide ?

  • ffmpeg gets slow after a while

    19 février 2014, par user3329033

    I have installed ffmpeg on my win r2 server and it gives me headache with rendering videos !
    When i have installed ffmpeg and have started to render videos (700MB mp4 video into 3 clips of 7:00 minutes mp4 videos) it worked pretty good, an 700MB video was rendered in 3 clips in 10 minutes !

    After rendering 30-40 videos in clips it started to slow down, now 1 clip takes 10-20 minutes !

    I have rebooted my machine but it does not change anything, it renders a clip in 10-20 minutes instead of 3-4 minutes !

    I have reinstalled OS and installed ffmpeg again and it works great, it does the rendering in 3-4 minutes but after a couple of videos it slows down again to 10-20 minutes per clip !
    Do you have simillar experience or any suggestions how to avoid the slowdown ?

    My server details are :

    6GB RAM
    4 Cores
    500GB HDD
    Windows Server 2008 R2 Standard OS

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