avconv_opt.c:885: error: Integer Overflow L2
  ([0, `oc->nb_streams`] - 1):unsigned32.

avconv_opt.c:881:1: <LHS trace>
879. }
880. 
881. static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
     ^
882. {
883.     OutputStream *ost;

avconv_opt.c:881:1: Parameter `oc->nb_streams`
879. }
880. 
881. static OutputStream *new_output_stream(OptionsContext *o, AVFormatContext *oc, enum AVMediaType type)
     ^
882. {
883.     OutputStream *ost;

avconv_opt.c:884:20: Call
882. {
883.     OutputStream *ost;
884.     AVStream *st = avformat_new_stream(oc, NULL);
                        ^
885.     int idx      = oc->nb_streams - 1, ret = 0;
886.     char *bsf = NULL, *next, *codec_tag = NULL;

libavformat/utils.c:2644:1: Parameter `s->nb_streams`
  2642. }
  2643. 
  2644. AVStream *avformat_new_stream(AVFormatContext *s, const AVCodec *c)
        ^
  2645. {
  2646.     AVStream *st;

avconv_opt.c:885:5: Binary operation: ([0, oc->nb_streams] - 1):unsigned32
883.     OutputStream *ost;
884.     AVStream *st = avformat_new_stream(oc, NULL);
885.     int idx      = oc->nb_streams - 1, ret = 0;
         ^
886.     char *bsf = NULL, *next, *codec_tag = NULL;
887.     AVBitStreamFilterContext *bsfc, *bsfc_prev = NULL;
