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  • Gestion générale des documents

    13 May 2011, by

    MédiaSPIP ne modifie jamais le document original mis en ligne.
    Pour chaque document mis en ligne il effectue deux opérations successives : la création d’une version supplémentaire qui peut être facilement consultée en ligne tout en laissant l’original téléchargeable dans le cas où le document original ne peut être lu dans un navigateur Internet; la récupération des métadonnées du document original pour illustrer textuellement le fichier;
    Les tableaux ci-dessous expliquent ce que peut faire MédiaSPIP sur (...)

  • List of compatible distributions

    26 April 2011, by

    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 (...)

  • Des sites réalisés avec MediaSPIP

    2 May 2011, by

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

On other websites (5331)

  • Revision 6783: On va utiliser l’inclure de forum de base soit de Zpip soit de comments ...

    6 July 2012, by kent1 — Log

    On va utiliser l’inclure de forum de base soit de Zpip soit de comments
    Petites modifs css
    On rajoute les mini logo sur les logos qui avaient disparu dans la nav de la colonne de nav

  • Find better VP8 parameters for robustness in UDP streaming with libav/ffmpeg

    24 October 2014, by lmNt

    I’m facing some problems in my video chat application, which is using libav libraries. I am sending 1080p videos encoded in VP8 as WebM container via UDP and it works quite well. Most of the time, the decoder on either side recovers from packet losses due to the transmission.

    However at some point in time it just freezes and never recovers again. This happens on both sides eventually. I was searching for VP8 codec parameters to set for increased robustness, when sending over lossy transmission channels. And I combined some of which I found, in order to increase robustness. However, it still freezes after some time of video chat.

    Here are the parameters I am currently using.

      pVidCodecCtx->codec_id     = AV_CODEC_ID_VP8;
    
  pVidCodecCtx->codec_type   = AVMEDIA_TYPE_VIDEO;
    
  pVidCodecCtx->width        = frmQ->pCodecCtx->width; //1920
    
  pVidCodecCtx->height       = frmQ->pCodecCtx->height; //1080
    
  pVidCodecCtx->time_base    = frmQ->pCodecCtx->time_base;
    
  pVidCodecCtx->pix_fmt      = PIX_FMT_YUV420P;
    
  pVidCodecCtx->qmin         = 4;
    
  pVidCodecCtx->qmax         = 56;
    
  pVidCodecCtx->bit_rate     = pVidCodecCtx->width * pVidCodecCtx->height * 6;
    
  pVidCodecCtx->slices       = 8;
    
  pVidCodecCtx->profile      = 3;
    
  pVidCodecCtx->thread_count = 3;
    
  pVidCodecCtx->keyint_min   = 5;
    
  av_dict_set(&pDictCodecOpts, "rc_lookahead", "0", 0);
    
  av_dict_set(&pDictCodecOpts, "quality", "realtime", 0);
    
  av_dict_set(&pDictCodecOpts, "deadline", "realtime", 0);
    
  av_dict_set(&pDictCodecOpts, "max-intra-rate", "0", 0);
    
  av_dict_set(&pDictCodecOpts, "qcomp", "0", 0);
    
  av_dict_set(&pDictCodecOpts, "default", "er", 0);
    
  av_dict_set(&pDictCodecOpts, "error_resilient", "er", 0);
    
  av_dict_set(&pDictCodecOpts, "partitions", "er", 0);

    Most of the parameters I extracted from the ffmpeg code for the vpx encoder.

    Do I also have to set parameters for the decoder in order to increase error resilience?
    Or am I missing some parameters in the encoder or setting them incorrectly. Any help or hints are greatly appreciated.

  • Record the whole webrtc call in nodejs and stream it into rtmp

    31 July 2023, by Matrix 404

    I have a simple peer-to-peer video chat using PeerJS, and I want to stream the entire call to an RTMP server. Do you have any ideas on how to achieve this? I'm particularly interested in understanding how platforms like StreamYard work on the backend.

    


    The main goal is to stream the video call to an RTMP server.

    


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