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  • Installation en mode ferme

    4 février 2011, par

    Le mode ferme permet d’héberger plusieurs sites de type MediaSPIP en n’installant qu’une seule fois son noyau fonctionnel.
    C’est la méthode que nous utilisons sur cette même plateforme.
    L’utilisation en mode ferme nécessite de connaïtre un peu le mécanisme de SPIP contrairement à la version standalone qui ne nécessite pas réellement de connaissances spécifique puisque l’espace privé habituel de SPIP n’est plus utilisé.
    Dans un premier temps, vous devez avoir installé les mêmes fichiers que l’installation (...)

  • Déploiements possibles

    31 janvier 2010, par

    Deux types de déploiements sont envisageable dépendant de deux aspects : La méthode d’installation envisagée (en standalone ou en ferme) ; Le nombre d’encodages journaliers et la fréquentation envisagés ;
    L’encodage de vidéos est un processus lourd consommant énormément de ressources système (CPU et RAM), il est nécessaire de prendre tout cela en considération. Ce système n’est donc possible que sur un ou plusieurs serveurs dédiés.
    Version mono serveur
    La version mono serveur consiste à n’utiliser qu’une (...)

  • 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 (...)

Sur d’autres sites (4168)

  • ffmpeg unique frames only

    5 novembre 2013, par William

    I have a video sequence (MPEG1) of 30 fps that is decoded in two ways :

    • opencv_ffmpeg returns 30 images per second, but only 5 of them are unique, while all others are clones of the unique ones.

    • proprietary players (MediaPlayer) returns only the 5 unique frames and "holds" them for (1/5) sec each.

    Is there a way to grab only the unique frames that the coder knows and not the total amount the ffmpeg decoder produces to fulfill the fps rate ?

    I'm developing a tracker and my tracker is forced to run 6 times slower and do many mistakes due to these "cloned frames".

    Does anyone know any technical term to the problem ? Unfortunately, ffmpeg is a black box for an opencv user and the documentation is sparse.

  • ffmpeg not using all cores

    4 novembre 2013, par kkgzjjmj

    I just got my new server with two intel e5-2695 but I was shocked to see that ffmpeg or ubuntu doesn't utilize all cores.

    top while ffmpeg was running

    top - 23:35:25 up  2:41,  2 users,  load average: 5.35, 4.37, 3.12
    
Tasks: 333 total,   2 running, 331 sleeping,   0 stopped,   0 zombie
    
%Cpu0  :  0.0 us,  1.0 sy, 35.6 ni, 63.4 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu1  :  0.0 us,  0.7 sy, 35.5 ni, 63.9 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu2  :  0.0 us,  0.7 sy, 33.4 ni, 65.9 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu3  :  0.0 us,  0.0 sy, 32.7 ni, 67.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu4  :  0.0 us,  0.3 sy, 32.3 ni, 67.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu5  :  0.0 us,  0.3 sy, 33.0 ni, 66.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu6  :  0.0 us,  0.0 sy, 32.6 ni, 67.4 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu7  :  0.0 us,  0.3 sy, 32.7 ni, 67.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu8  :  0.0 us,  0.7 sy, 32.6 ni, 66.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu9  :  0.0 us,  0.3 sy, 33.9 ni, 65.8 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu10 :  0.0 us,  0.0 sy, 35.0 ni, 65.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu11 :  0.0 us,  0.7 sy, 30.0 ni, 69.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu12 : 21.1 us,  0.0 sy,  0.0 ni, 78.9 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu13 :  0.7 us,  0.0 sy,  4.3 ni, 95.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu14 :  0.3 us,  0.0 sy,  5.0 ni, 94.6 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu15 : 24.9 us,  0.0 sy,  0.0 ni, 75.1 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu16 :  0.3 us,  0.0 sy,  3.7 ni, 96.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu17 :  0.7 us,  0.3 sy,  4.9 ni, 94.1 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu18 :  1.0 us,  0.0 sy,  4.6 ni, 94.4 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu19 :  0.7 us,  0.0 sy,  4.7 ni, 94.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu20 : 11.1 us,  0.0 sy,  0.0 ni, 88.9 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu21 :  1.3 us,  0.0 sy,  4.6 ni, 94.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu22 :  2.0 us,  0.3 sy,  4.3 ni, 93.4 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu23 : 96.7 us,  1.0 sy,  0.0 ni,  2.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu24 :  0.0 us,  0.0 sy,  0.7 ni, 99.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu25 :  0.0 us,  0.0 sy,  3.0 ni, 97.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu26 :  0.0 us,  0.0 sy,  1.3 ni, 98.7 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu27 :  0.0 us,  0.0 sy,  4.0 ni, 96.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu28 :  0.0 us,  0.0 sy,  1.7 ni, 98.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu29 :  0.0 us,  0.0 sy,  1.7 ni, 98.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu30 :  0.0 us,  0.0 sy,  1.7 ni, 98.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu31 :  0.0 us,  0.0 sy,  1.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu32 :  0.0 us,  0.0 sy,  0.7 ni, 99.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu33 :  0.0 us,  0.0 sy,  1.7 ni, 98.3 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu34 :  0.0 us,  0.0 sy,  2.0 ni, 98.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu35 :  0.0 us,  0.0 sy,  1.0 ni, 99.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st
    
%Cpu36 :  0.0 us,  0.0 sy,  0.0 ni,100.0 id,  0.0 wa,  0.0 hi,  0.0 si,  0.0 st

    ffmpeg was sent with -threads 0

    *I also tried sending ffmoeg with -threads 500- no difference

    OS : Ubuntu Server 12.04.3 LTS

  • how to explain this C language code from ffmpeg remuxing

    20 avril 2017, par Fidona

    can someone help me what the meaning of this code ? this is a code from ffmpeg remuxing code.

    static void log_packet(const AVFormatContext *fmt_ctx, const AVPacket *pkt, const char *tag, int hours, int mins, int secs, int us, int *time )
    
{
    
    AVRational *time_base = &fmt_ctx->streams[pkt->stream_index]->time_base;
    
    total = total + pkt->duration;
    
  //  printf( "%d:%d:%d.%d \n", hours,  mins,  secs, us );
    
    *time = av_q2d(*time_base) * pkt->pts ;
    
}

    I’m kind of new to C language. thank you !

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