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  • La file d’attente de SPIPmotion

    28 novembre 2010, par

    Une file d’attente stockée dans la base de donnée
    Lors de son installation, SPIPmotion crée une nouvelle table dans la base de donnée intitulée spip_spipmotion_attentes.
    Cette nouvelle table est constituée des champs suivants : id_spipmotion_attente, l’identifiant numérique unique de la tâche à traiter ; id_document, l’identifiant numérique du document original à encoder ; id_objet l’identifiant unique de l’objet auquel le document encodé devra être attaché automatiquement ; objet, le type d’objet auquel (...)

  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Encoding and processing into web-friendly formats

    13 avril 2011, par

    MediaSPIP automatically converts uploaded files to internet-compatible formats.
    Video files are encoded in MP4, Ogv and WebM (supported by HTML5) and MP4 (supported by Flash).
    Audio files are encoded in MP3 and Ogg (supported by HTML5) and MP3 (supported by Flash).
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Sur d’autres sites (6319)

  • Revision 1633685725 : Merge "Fix lingering x->skip settings if static_threshold is used." into experim

    15 avril 2013, par Ronald S. Bultje

    Merge "Fix lingering x->skip settings if static_threshold is used." into experimental

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  • rtp mpg stream using jrtplib occurred error "illegal timestamp unit"

    13 avril 2013, par socket

    I wanna code rtp video stream sender and use VLC to play it in the LAN. I just have a mpeg4 file "a.mpg". And in my opinion, jrtplib can pack the packed well, so I think I can use sendPacket() function directly to send the mpg file. code below :

    #include 
    
#include 
    
#include 
    
#include 
    
#include 
    
#include 
    
#include 
    
#include <iostream>
    
#include
    

    
using namespace jrtplib;
    
using namespace std;
    
int main()
    
{
    
RTPSession s;
    
RTPSessionParams sparam;
    
s.SetTimestampUnit(160.0/104857.0);//~
    
RTPUDPv4TransmissionParams tparam;
    
tparam.SetPortbase(9000);
    
int status=s.Create(sparam,&amp;tparam);
    
if(status&lt;0)
    
{
    
    cerr&lt;&lt;"error 1"&lt;/~
    
s.SetDefaultMark(false);
    
s.SetDefaultTimestampIncrement(160);//~~
    

    
unsigned char buf[160];
    
FILE*f=fopen("a.mpg","rb");
    
while(!feof(f))
    
{
    
    fread(buf,1,160,f);
    
    RTPTime delay(0.02);//~
    
    bool ret=false;
    
    status=s.SendPacket(buf,160);
    
    if(status&lt;0)
    
    {
    
        cerr&lt;&lt;"error 3"&lt;code></iostream>

    Then, I compile it :

     g++ jrtpsend.cpp -ljrtp -I /usr/local/include/jrtplib3

    After that, I run the program but error occurred :

    kl@kl-ubuntu:~/code/RTP$ ./a.out 
    
error 1
    
Speficied an illegal timestamp unit for the the RTCP packet builder

    Actually, I didn't know timestamp exactly. When I use ffplay to play a.mpg showing that :

    Input #0, mpeg, from &#39;a.mpg&#39;:q=    0KB vq=    0KB sq=    0B f=0/0   
    
Duration: 00:01:00.69, start: 0.529089, bitrate: 556 kb/s
    
Stream #0:0[0x1e0]: Video: mpeg1video, yuv420p, 640x480 [SAR 239:182 DAR 478:273],   104857 kb/s, 25 fps, 25 tbr, 90k tbn, 25 tbc
    
Stream #0:1[0x1c0]: Audio: mp2, 44100 Hz, stereo, s16p, 128 kb/s

    2.46 A-V : -0.003 fd= 7 aq= 2KB vq= 33KB sq= 0B f=0/0

    So, I use the data 104857kb/s in the code (setTimestampUnit()), but I have no idea whether I use it correctly.
    All in all, please give me some suggestion how to run the program well or ...
    Best regards :-)

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