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  • MediaSPIP 0.1 Beta version

    25 avril 2011, par

    MediaSPIP 0.1 beta is the first version of MediaSPIP proclaimed as "usable".
    The zip file provided here only contains the sources of MediaSPIP in its standalone version.
    To get a working installation, you must manually install all-software dependencies on the server.
    If you want to use this archive for an installation in "farm mode", you will also need to proceed to other manual (...)

  • Multilang : améliorer l’interface pour les blocs multilingues

    18 février 2011, par

    Multilang est un plugin supplémentaire qui n’est pas activé par défaut lors de l’initialisation de MediaSPIP.
    Après son activation, une préconfiguration est mise en place automatiquement par MediaSPIP init permettant à la nouvelle fonctionnalité d’être automatiquement opérationnelle. Il n’est donc pas obligatoire de passer par une étape de configuration pour cela.

  • 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 (...)

Sur d’autres sites (10393)

  • FFMPEG eats all the memory

    19 mai 2021, par Abhinandan Chakraborty

    Probably one of the most cliche question but here is the problem : So I have a Ubuntu Server running as an isolated machine only to handle FFMPEG jobs. It has 4 vCPU, 4GB RAM, 80GB storage. I am currently using this script to convert a video into HLS playlist : https://gist.github.com/maitrungduc1410/9c640c61a7871390843af00ae1d8758e This works fine for all video including 4K recorded from iPhone. However, I am trying to add watermark so I changed the line 106 of this script

    


    from :

    


    cmd+=" ${static_params} -vf scale=w=${widthParam}:h=${heightParam}"


    


    to :

    


    cmd+=" ${static_params} -filter_complex [1]colorchannelmixer=aa=0.5,scale=iw*0.1:-1[wm];[0][wm]overlay=W-w-5:H-h-5[out];[out]scale=w=${widthParam}:h=${heightParam}[final] -map [final]"


    


    Now this works flawlessly in videos from Youtube or other sources but as soon as I am trying to use 4K videos from iPhone, the RAM usage grows from 250MB to 3.8GB in less than minute and crashes the entire process. So I looked out for some similar question :

    


      

    1. FFmpeg Concat Filter High Memory Usage

      2. 


    2. https://github.com/jitsi/jibri/issues/269

      3. 


    3. https://superuser.com/questions/1509906/reduce-ffmpeg-memory-usage-when-joining-videos

      4. 


    4. ffmpeg amerge Error while filtering : Cannot allocate memory

      5. 


    


    I understand that FFMPEG requires high amount of memory consumption but I am unsure what's the exact way to process video without holding the stream in the memory but instead release any memory allocation in real-time. Even if we decide to work without watermark, It still hangs around 1.8GB RAM for processing 5 seconds 4K video and this create a risk of what if our user upload rather longer video than it will eventually crash down the server. I have thought about ulimit but this does seem like restricting FFMPEG instead of writing an improved command. Let me know how I can tackle this problem. Thanks

    


  • RTSP to RTMP in iOS as Transcoding

    15 mars 2019, par Naman Sheth

    I am getting live feed from some IP camera as an RTSP url and then i want to convert it to RTMP.

    Here is two aspects that we have to implement

    1. What we convert from RTSP to RTMP is transcoding.
    2. I have my iPad/iPhone Camera that user can switch and add live feed to RTMP url at this point I want to stop RTSP feed. i.e. Encoding

    This all scenario want to do with FFMPEG

    I have searched on this url but not able to figure out in iOS

    ffmpeg -i "[your rtsp link]" -f flv -r -s -an "[Your rtmp link]"

    RTSP to RTMP streaming

    Thanks in Advance !

  • ffmpeg-X264 encode —BGRA to AVFrame(ffmpeg) and viceversa ? for IOS

    6 avril 2012, par Asta ni enohpi

    Am working Video Processing in IOS(iphone/ipod/ipad) Using Objective c. i am using AVFoundation Framework to Capture Video . i want to Encode/decode those video frame using ffmpeg-libx264. i have compiled ffmpeg-x264 lib for ios. i got kCVPixelFormatType_32BGRA from AVFoundation.

    my problem is
    1.How to convert kCVPixelFormatType_32BGRA to AVFrame for enode using avcodec_encode_video ?

    2.How to convert AVFrame to kCVPixelFormatType_32BGRA @ decode side from avcodec_decode_video2 ?

    Please help me to start above process or give path for working tutorial .Thanks in advance.

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