avconv_opt.c:815: error: Integer Overflow L2
  ([0, `oc->nb_streams`] - 1):unsigned32.

avconv_opt.c:811:1: <LHS trace>
809. }
810. 
811. static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
     ^
812. {
813.     OutputStream *ost;

avconv_opt.c:811:1: Parameter `oc->nb_streams`
809. }
810. 
811. static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
     ^
812. {
813.     OutputStream *ost;

avconv_opt.c:814:20: Call
812. {
813.     OutputStream *ost;
814.     AVStream *st = avformat_new_stream(oc, NULL);
                        ^
815.     int idx      = oc->nb_streams - 1, ret = 0;
816.     char *bsf = NULL, *next, *codec_tag = NULL;

libavformat/utils.c:2573:1: Parameter `s->nb_streams`
  2571. }
  2572. 
  2573. AVStream *avformat_new_stream(AVFormatContext *s, AVCodec *c)
        ^
  2574. {
  2575.     AVStream *st;

avconv_opt.c:815:5: Binary operation: ([0, oc->nb_streams] - 1):unsigned32
813.     OutputStream *ost;
814.     AVStream *st = avformat_new_stream(oc, NULL);
815.     int idx      = oc->nb_streams - 1, ret = 0;
         ^
816.     char *bsf = NULL, *next, *codec_tag = NULL;
817.     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
