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Mot : - Tags -/MediaSPIP

Autres articles (79)

  • Websites made ​​with MediaSPIP

    2 mai 2011, par

    This page lists some websites based on MediaSPIP.

  • Creating farms of unique websites

    13 avril 2011, par

    MediaSPIP platforms can be installed as a farm, with a single "core" hosted on a dedicated server and used by multiple websites.
    This allows (among other things) : implementation costs to be shared between several different projects / individuals rapid deployment of multiple unique sites creation of groups of like-minded sites, making it possible to browse media in a more controlled and selective environment than the major "open" (...)

  • Le profil des utilisateurs

    12 avril 2011, par

    Chaque utilisateur dispose d’une page de profil lui permettant de modifier ses informations personnelle. Dans le menu de haut de page par défaut, un élément de menu est automatiquement créé à l’initialisation de MediaSPIP, visible uniquement si le visiteur est identifié sur le site.
    L’utilisateur a accès à la modification de profil depuis sa page auteur, un lien dans la navigation "Modifier votre profil" est (...)

Sur d’autres sites (9684)

  • FFmpeg skips generating thumbs

    25 janvier 2018, par Awais fiaz

    I am using ffmpeg for creating thumbs out of videos within php script however ffmpeg skips creating thumbs sometimes but sometimes it goes okay and works fine i am a little confused of this strange behavior.

    Command which fails :

    Command : /opt/bin/ffmpeg -ss 00:00:06 -i /home/my/public_html/files/conversion_queue/1516767375521d6.mp4 -an -r 1 -y -f image2 -vframes 1 /home/my/public_html/files/thumbs/2018/01/24/1516767375521d6-original-1.jpg

    Output error

    [image2 @ 0x2eaab00] Could not open file : /home/my/public_html/files/thumbs/2018/01/24/1516767375521d6-original-1.jpg
    
av_interleaved_write_frame(): Input/output error
    
frame= 1 fps=0.0 q=7.1 Lsize=N/A time=00:00:01.00 bitrate=N/A speed=25.3x 
    
video:41kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Conversion failed!

    Command which works fine :

    Command : /opt/bin/ffmpeg -ss 00:01:01 -i /home/my/public_html/files/conversion_queue/1516867108c557e.mp4 -an -r 1 -y -f image2 -vframes 1 /home/my/public_html/files/thumbs/2018/01/25/1516867108c557e-original-1.jpg

    Output

    frame= 1 fps=0.0 q=3.1 Lsize=N/A time=00:00:01.00 bitrate=N/A speed=49.9x 
    
video:21kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown

    Although both are same but still i am facing this issue.
    Any help regarding this would be really appreciated.

  • Writing only video (no audio) file using ffmpeg. av_write_header fails

    19 janvier 2018, par Kamal

    I have RTP packets with VP8 encoded data. I want to write it to a mkv file or webm file. I tried a bit, but I have not been successful yet. My code is as below

    #include 
    
#include 
    
#include 
    
#include 
    
#include 
    

    
#include <libavutil></libavutil>avassert.h>
    
#include <libavutil></libavutil>channel_layout.h>
    
#include <libavutil></libavutil>opt.h>
    
#include <libavutil></libavutil>mathematics.h>
    
#include <libavutil></libavutil>timestamp.h>
    
#include <libavformat></libavformat>avformat.h>
    
#include <libswscale></libswscale>swscale.h>
    
#include <libswresample></libswresample>swresample.h>
    

    
bool mfmedia_init_ffmpeg();
    
void mfmedia_ffprint(void *handle, int cnt, const char *format, va_list valist);
    

    
int main()
    
{
    
    mfmedia_init_ffmpeg();
    
    return 0;
    
}
    

    
bool mfmedia_init_ffmpeg() 
    
{
    
    bool ret = false;
    

    
    AVCodecContext* context;
    
    AVCodec* codec;
    
    AVFormatContext* format;
    
    AVStream* stream;
    

    
    unsigned fps = 24;
    
    unsigned width = 768;
    
    unsigned height = 608;
    

    
    av_register_all();
    

    
    int err = 0;
    
    char errorLog[128] = { 0 };
    

    
    av_log_set_level(AV_LOG_TRACE);
    
    av_log_set_callback(mfmedia_ffprint);
    

    
    err = avformat_alloc_output_context2(&amp;format, NULL, NULL, "o.webm");
    
    if (err &lt; 0) 
    
    {
    
        printf("Cannot allocate output context: %s\n", av_make_error_string(errorLog, 128, err));
    
        goto last;
    
    }
    

    
    codec = avcodec_find_encoder(AV_CODEC_ID_VP8);
    
    if (!codec) 
    
    {
    
        printf("Cannot find an encoder\n");
    
        goto last;
    
    }
    

    
    context = avcodec_alloc_context3(codec);
    
    if (!context) 
    
    {
    
        printf("Cannot allocate a codec context\n");
    
        goto last;
    
    }
    

    
    context->pix_fmt = AV_PIX_FMT_YUV420P;
    
    context->width = width;
    
    context->height = height;
    
    context->time_base = (AVRational){1, fps};
    

    
    err = avcodec_open2(context, codec, NULL);
    
    if(err &lt; 0) 
    
    {
    
        printf("Cannot open codec: %s\n", av_make_error_string(errorLog, 128, err));
    
        goto last;
    
    }
    

    
    stream = avformat_new_stream(format, codec);
    
    if (!stream) 
    
    {
    
        printf("Cannot create a new stream\n");
    
        goto last;
    
    }
    

    
    //av_dump_format(format, 0, "o.webm", 1);
    

    
    err = avio_open(&amp;format->pb, "o.webm", AVIO_FLAG_WRITE);
    
    if(err &lt; 0) 
    
    {
    
        printf("Cannot open output: %s\n", av_make_error_string(errorLog, 128, err));
    
        goto last;
    
    }
    

    
    err = avformat_write_header(format, NULL); 
    
    if(err &lt; 0) 
    
    {
    
        printf("Cannot write header to stream: %s\n", av_make_error_string(errorLog, 128, err));
    
        goto last;
    
    }
    
    ret = true;
    

    
last:
    
    return ret;
    
}
    

    
void mfmedia_ffprint(void *handle, int cnt, const char *format, va_list valist)
    
{
    
    char *log_buf = (char *)malloc(38192);
    
    int length;
    

    
    if(log_buf)
    
    {
    
        time_t rawtime;
    
        time ( &amp;rawtime );
    

    
        length = vsprintf(log_buf ,format, valist);
    
        length += sprintf((log_buf + length), " : %s ", ctime (&amp;rawtime));
    
        *(log_buf + length) = 0x0;
    

    
        printf("%s", log_buf);
    
        fflush(stdout);
    
        free(log_buf);
    
    }
    
}

    It is failing when I call avformat_write_header.

    From trace log (towards end) I see

    Setting default whitelist ’file,crypto’
     : Fri Jan 19 16:58:57 2018
    Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
     : Fri Jan 19 16:58:57 2018
    dimensions not set
     : Fri Jan 19 16:58:57 2018
    Cannot write header to stream : Invalid argument

    Please let me know why avformat_write_header is failing.

  • FFMPEG libx264 on Ubuntu 16

    20 décembre 2019, par Kanza

    I have FFMPEG installed on my Ubuntu 16 but I want to use libx264 codec which I am unable to use. My current FFMPEG version is

    ffmpeg -version
    
ffmpeg version N-90418-g74c6a6d Copyright (c) 2000-2018 the FFmpeg developers
    
built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.10) 20160609
    
configuration: --prefix= --enable-pic --disable-yasm --enable-shared
    
libavutil      56. 11.100 / 56. 11.100
    
libavcodec     58. 15.100 / 58. 15.100
    
libavformat    58. 10.100 / 58. 10.100
    
libavdevice    58.  2.100 / 58.  2.100
    
libavfilter     7. 13.100 /  7. 13.100
    
libswscale      5.  0.102 /  5.  0.102
    
libswresample   3.  0.101 /  3.  0.101

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