avconv.c:3499: error: Integer Overflow L2
  ([0, +oo] - 1):unsigned32 by call to `av_close_input_file`.

avconv.c:3496:13: Unknown value from: choose_pixel_fmt
3494.             choose_sample_fmt(st, codec);
3495.         else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO && !ost->stream_copy)
3496.             choose_pixel_fmt(st, codec);
                  ^
3497.     }
3498. 

avconv.c:3499:5: Call
3497.     }
3498. 
3499.     av_close_input_file(ic);
          ^
3500.     return 0;
3501. }

libavformat/utils.c:2687:1: Parameter `s->nb_programs`
  2685. }
  2686. 
  2687. void av_close_input_file(AVFormatContext *s)
        ^
  2688. {
  2689.     AVIOContext *pb = (s->iformat->flags & AVFMT_NOFILE) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?

libavformat/utils.c:2691:5: Call
  2689.     AVIOContext *pb = (s->iformat->flags & AVFMT_NOFILE) || (s->flags & AVFMT_FLAG_CUSTOM_IO) ?
  2690.                        NULL : s->pb;
  2691.     av_close_input_stream(s);
            ^
  2692.     if (pb)
  2693.         avio_close(pb);

libavformat/utils.c:2637:1: Parameter `s->nb_programs`
    2635. }
    2636. 
    2637. void av_close_input_stream(AVFormatContext *s)
          ^
    2638. {
    2639.     flush_packet_queue(s);

libavformat/utils.c:2642:5: Call
    2640.     if (s->iformat->read_close)
    2641.         s->iformat->read_close(s);
    2642.     avformat_free_context(s);
              ^
    2643. }
    2644. 

libavformat/utils.c:2645:1: <LHS trace>
2643. }
2644. 
2645. void avformat_free_context(AVFormatContext *s)
      ^
2646. {
2647.     int i;

libavformat/utils.c:2645:1: Parameter `s->nb_programs`
      2643. }
      2644. 
      2645. void avformat_free_context(AVFormatContext *s)
            ^
      2646. {
      2647.     int i;

libavformat/utils.c:2670:9: Binary operation: ([0, +oo] - 1):unsigned32 by call to `av_close_input_file` 
      2668.         av_free(st);
      2669.     }
      2670.     for(i=s->nb_programs-1; i>=0; i--) {
                    ^
      2671.         av_dict_free(&s->programs[i]->metadata);
      2672.         av_freep(&s->programs[i]->stream_index);
