avconv.c:443: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `avformat_free_context`.

avconv.c:443:9: Call
441.         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
442.             avio_close(s->pb);
443.         avformat_free_context(s);
             ^
444.         av_dict_free(&output_files[i].opts);
445.     }

libavformat/utils.c:2620:13: Call
  2618.         if (st->parser) {
  2619.             av_parser_close(st->parser);
  2620.             av_free_packet(&st->cur_pkt);
                    ^
  2621.         }
  2622.         av_dict_free(&st->metadata);

libavcodec/avpacket.c:151:1: Parameter `pkt->size`
    149. }
    150. 
    151. void av_free_packet(AVPacket *pkt)
         ^
    152. {
    153.     if (pkt) {

avconv.c:444:9: Call
442.             avio_close(s->pb);
443.         avformat_free_context(s);
444.         av_dict_free(&output_files[i].opts);
             ^
445.     }
446.     for(i=0;i<nb_input_files;i++) {

libavutil/dict.c:101:1: Parameter `(*pm)->count`
   99. }
  100. 
  101. void av_dict_free(AVDictionary **pm)
       ^
  102. {
  103.     AVDictionary *m = *pm;

avconv.c:443:9: Call
441.         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
442.             avio_close(s->pb);
443.         avformat_free_context(s);
             ^
444.         av_dict_free(&output_files[i].opts);
445.     }

libavformat/utils.c:2606:1: <LHS trace>
2604. }
2605. 
2606. void avformat_free_context(AVFormatContext *s)
      ^
2607. {
2608.     int i;

libavformat/utils.c:2606:1: Parameter `s->nb_programs`
  2604. }
  2605. 
  2606. void avformat_free_context(AVFormatContext *s)
        ^
  2607. {
  2608.     int i;

libavformat/utils.c:2631:9: Binary operation: ([0, +oo] - 1):unsigned32 by call to `avformat_free_context` 
  2629.         av_free(st);
  2630.     }
  2631.     for(i=s->nb_programs-1; i>=0; i--) {
                ^
  2632.         av_dict_free(&s->programs[i]->metadata);
  2633.         av_freep(&s->programs[i]->stream_index);
