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  • Contribute to translation

    13 avril 2011

    You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
    To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
    MediaSPIP is currently available in French and English (...)

  • Des sites réalisés avec MediaSPIP

    2 mai 2011, par

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

  • Les autorisations surchargées par les plugins

    27 avril 2010, par

    Mediaspip core
    autoriser_auteur_modifier() afin que les visiteurs soient capables de modifier leurs informations sur la page d’auteurs

Sur d’autres sites (9816)

  • FFProbe generated data don't seem to agree with calculated data using ffmpeg libraries

    18 janvier 2020, par ark1974

    Using ffmpeg library avformat I am trying to check if the ffprobe generated data agrees with the data generated by the library. The code objective is to try to seek to the nearest key frame. When trying to seek at 100 frame or less, the codes returns 0 all the time.
    When trying to seek at 200 frame, the codes returns 4 all the time. But the result ie 4th frame don’t seem to be right. Where am I wrong ? Is my time_base conversion to actual frame faulty ?

    The test result using ffprobe

    Filename = test.mp4  
    
Duration = 00:00:10.56 
    
Fps = 25
    
Total frames = 256   
    
The key frames pkt_pts_time are at 2.120000  and 0.000000 (using -skip_frame nokey )
    
Corresponding pkt_duration_time: 0.040000 and 0.040000 (  same, why?)

    Abstract of the code :

    // Objective: seek to the nearest key frame
    
frameIndex = 200;
    
int64_t timeBase = (int64_t(pCodecCtx->time_base.num) * AV_TIME_BASE) / int64_t(pCodecCtx->time_base.den);  
    
int64_t seekTarget = int64_t(frameIndex) * timeBase;
    

    
if (av_seek_frame(pFormatCtx, -1, seekTarget, AVSEEK_FLAG_FRAME | AVSEEK_FLAG_BACKWARD) < 0) return -1;
    

    
//convert the time_base to actual frame
    
auto time2frame = [&](int64_t tb) {
    
    return tb * int64_t(pCodecCtx->time_base.den) / (int64_t(pCodecCtx->time_base.num) * AV_TIME_BASE);
    
};
    

    
AVPacket avPacket;
    
int result = av_read_frame(pFormatCtx, &avPacket);
    
if (result == 0) {
    

    
    auto dts = avPacket.dts;
    
    auto pts = avPacket.pts;
    
    auto idx = avPacket.stream_index;
    
    auto f = time2frame(pts); // expecting the actual frame here
    
    std::cout << dts << pts << idx << f;
    
}

  • FFmpeg stucks for few seconds on start

    7 février 2018, par tarasmorskyi

    I’m trying to cut and resize video on Android(but it is similar on MacOS) , but when I run the ffmpeg command it returns me

    frame= 0 fps=0.0 q=0.0 size= 0kB time=00:00:00.00 bitrate=N/A speed=

    It repeats for about 20 sec (I have 4K video with 3 sec duration).

    Is there any way to improve process speed ? Here is example of my ffmpeg command

    ffmpeg -y -i input.mp4 -ss 00:01.82 -to 00:02.94 -vf scale=500:1024 -c:v libx264 -c:a aac -b:v 500k -b:a 96k output.mp4

  • FFMPEG - avformat_open_input() always return error with filename

    22 septembre 2015, par Tony Than
    const char* filename = "D:\\abc.flv";
    
err = avformat_open_input(&ic, filename, NULL, 0);

    This function always returns error when filename is *.flv.
    If I use file mp4 (*.mp4), it’s ok.

    Please help me find the cause of this problem !!

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