avconv.c:3035: error: Buffer Overrun L1
  Offset: 1 Size: 1 by call to `check_stream_specifier`.

avconv.c:2984:5: Call
2982. 
2983.     parse_meta_type(inspec,  &type_in,  &idx_in,  &istream_spec);
2984.     parse_meta_type(outspec, &type_out, &idx_out, &ostream_spec);
          ^
2985. 
2986.     if (type_in == 'g' || type_out == 'g')

avconv.c:2947:1: Parameter `**stream_spec`
  2945.  * @param stream_spec for type s, the stream specifier is written here
  2946.  */
  2947. static void parse_meta_type(char *arg, char *type, int *index, const char **stream_spec)
        ^
  2948. {
  2949.     if (*arg) {

avconv.c:3035:24: Call
3033.     if (type_out == 's') {
3034.         for (i = 0; i < oc->nb_streams; i++) {
3035.             if ((ret = check_stream_specifier(oc, oc->streams[i], ostream_spec)) > 0) {
                             ^
3036.                 meta_out = &oc->streams[i]->metadata;
3037.                 av_dict_copy(meta_out, *meta_in, AV_DICT_DONT_OVERWRITE);

cmdutils.c:898:1: <Length trace>
896. }
897. 
898. int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
     ^
899. {
900.     if (*spec <= '9' && *spec >= '0') /* opt:index */

cmdutils.c:898:1: Parameter `*spec`
  896. }
  897. 
  898. int check_stream_specifier(AVFormatContext *s, AVStream *st, const char *spec)
       ^
  899. {
  900.     if (*spec <= '9' && *spec >= '0') /* opt:index */

cmdutils.c:906:18: Assignment
  904.         enum AVMediaType type;
  905. 
  906.         switch (*spec++) {
                        ^
  907.         case 'v': type = AVMEDIA_TYPE_VIDEO;      break;
  908.         case 'a': type = AVMEDIA_TYPE_AUDIO;      break;

cmdutils.c:915:13: Array access: Offset: 1 Size: 1 by call to `check_stream_specifier` 
  913.         if (type != st->codec->codec_type)
  914.             return 0;
  915.         if (*spec++ == ':') { /* possibly followed by :index */
                   ^
  916.             int i, index = strtol(spec, NULL, 0);
  917.             for (i = 0; i < s->nb_streams; i++)
