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  • 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.
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Sur d’autres sites (5739)

  • lavf/mov : Allow reading very large files.

    28 septembre 2017, par Pablo Montilla
    lavf/mov : Allow reading very large files.

    The Sample count in the time-to-sample table is defined as
    
32-bit unsigned integer by the QT specification.
    

    Fixes ticket #6700.
    • [DH] libavformat/isom.h
    • [DH] libavformat/mov.c

  • avcodec/zmbv : Check that the buffer is large enough for mvec

    15 novembre 2017, par Michael Niedermayer
    avcodec/zmbv : Check that the buffer is large enough for mvec

    Fixes : Timeout
    
Fixes : 4143/clusterfuzz-testcase-4736864637419520
    

    Found-by : continuous fuzzing process https://github.com/google/oss-fuzz/tree/master/projects/ffmpeg
    
Signed-off-by : Michael Niedermayer <michael@niedermayer.cc>
    • [DH] libavcodec/zmbv.c

  • Too large number of skipped frames. FFMPEG, C program

    27 novembre 2017, par gogoer

    I’m writing program on C to capture RTSP stream and write it to files.
    But after some time i get errors :

    Too large number of skipped frames xxxx > 60000

    After this files become incorrect and very small size.
    What the reason of it and how can o fix this problems ?

    a piece of code, where i capture frames and put them to buffer.

            ofmt = av_guess_format( NULL, sFileOutput, NULL );
    
        ofcx = avformat_alloc_context();
    
        ofcx->oformat = ofmt;
    
        int ret2=avio_open( &amp;ofcx->pb, sFileOutput, AVIO_FLAG_WRITE);
    
        if(ret2&lt;0){
    
            fprintf(stderr, "\nError occurred when opening output file: %s\n",av_err2str(ret2));
    
        }
    

    
        ost = avformat_new_stream( ofcx, NULL );
    
        avcodec_copy_context( ost->codec, iccx );
    

    
        ost->sample_aspect_ratio.num = iccx->sample_aspect_ratio.num;
    
        ost->sample_aspect_ratio.den = iccx->sample_aspect_ratio.den;
    

    
        ost->r_frame_rate = ist->r_frame_rate;
    
        ost->avg_frame_rate = ost->r_frame_rate;
    
        ost->time_base = av_inv_q( ost->r_frame_rate );
    
        ost->codec->time_base = ost->time_base;
    
        ost->codec->width = 1280;
    
        ost->codec->height = 800;
    

    
        av_init_packet( &amp;pkt );
    

    
        while ( av_read_frame( ifcx, &amp;pkt ) >= 0 &amp;&amp; start_flag==0 &amp;&amp; stop_flag==0){
    
            if ( pkt.stream_index == i_index ) {
    
                pkt.stream_index = ost->id;
    
                pkt.pts = av_rescale_q_rnd(pkt.pts, ist->time_base, ost->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    
                pkt.dts = av_rescale_q_rnd(pkt.dts, ist->time_base, ost->time_base, AV_ROUND_NEAR_INF|AV_ROUND_PASS_MINMAX);
    
                pkt.duration = av_rescale_q(pkt.duration, ist->time_base, ost->time_base);
    
                pkt.pos = -1;
    
                av_copy_packet(&amp;pkt_arr[pkg_index],&amp;pkt);
    
            }
    
            av_free_packet( &amp;pkt );
    
            av_init_packet( &amp;pkt );
    
            pkg_index++;
    

    
            if(pkg_index>=bufer_size){
    
                pkg_index=pkg_index-bufer_size;
    
            }
    
        }

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