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Autres articles (45)

  • 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" (...)

  • Other interesting software

    13 avril 2011, par

    We don’t claim to be the only ones doing what we do ... and especially not to assert claims to be the best either ... What we do, we just try to do it well and getting better ...
    The following list represents softwares that tend to be more or less as MediaSPIP or that MediaSPIP tries more or less to do the same, whatever ...
    We don’t know them, we didn’t try them, but you can take a peek.
    Videopress
    Website : http://videopress.com/
    License : GNU/GPL v2
    Source code : (...)

Sur d’autres sites (6248)

  • hevc_ps : make sure failing to decode an SPS always returns an error

    13 juillet 2015, par Anton Khirnov
    hevc_ps : make sure failing to decode an SPS always returns an error

    Some of the goto err clauses do not set the error code. It seems better
    
to fall back on INVALIDDATA instead of adding it everywhere explicitly.
    • [DBH] libavcodec/hevc_ps.c

  • (C) avcodec_receive_frame (ffmpeg) function always returns AVERROR(EAGAIN)

    13 avril 2021, par Levyu

    I was following this tutorial : http://dranger.com/ffmpeg/tutorial01.html
and was trying to change some deprecated functions, and so I had to try to use the avcodec_send_packet and avcodec_receive_frame functions.

    


    The problem I'm having is that avcodec_receive_frame always returns AVERROR(EAGAIN).

    


    My decoding function is as follows :

    


    static int decode(AVCodecContext *pCodecCtx, AVFrame *pFrame, AVPacket *packet) {
    
    int ret = avcodec_send_packet(pCodecCtx, packet);
    if (ret<0) {
        fprintf(stderr, "error sending packet for decoding\n");
        exit(1);
    }

    while (ret>=0) {        
        // avcodec_receive_packet(pCodecCtx, NULL);
        ret = avcodec_receive_frame(pCodecCtx, pFrame);
        if (ret == AVERROR(EAGAIN)) {
            fprintf(stderr, "\naverror(eagain) ret = %d\n", ret);
            return -1;
        }
        else if (ret == AVERROR_EOF) {
            fprintf(stderr, "eof\n");
            return -100;
        }
        else if (ret <0) {
            fprintf(stderr, "error during decoding\n");
            exit(1);
        }
    }
    return 0;
}


    


    Everywhere I read said that this is solved by calling avcodec_send_packet with the next frame, but this does not solve the problem for me because this function is being called in a loop :

    


    
    while (av_read_frame(pFormatCtx, &packet)>=0) {
        // is this a packet from the video stream?
        if (packet.stream_index==videoStream) {

           frameNotFinished = decode(pCodecCtx, pFrame, &packet);

            // did we get a video frame?
            if (!frameNotFinished) fprintf(stderr, "it worked!");
        }
        av_packet_unref(&packet);   
    }


    


    I should probably also add that avcodec_send_packet always returns 0 (success).

    


    Any help would be much appreciated.

    


  • pngdec : Stop trying to decode once inflate returns Z_STREAM_END

    28 septembre 2013, par Martin Storsjö
    pngdec : Stop trying to decode once inflate returns Z_STREAM_END

    If the input buffer contains more data after the deflate stream,
    
the loop previously left running infinitely, with inflate returning
    
Z_STREAM_END.
    

    Reported-by : Mateusz "j00ru" Jurczyk and Gynvael Coldwind
    
CC : libav-stable@libav.org
    
Signed-off-by : Martin Storsjö <martin@martin.st>
    • [DH] libavcodec/pngdec.c

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