static int stl_probe(AVProbeData *p)
{
    char c;
    const unsigned char *ptr = p->buf;
    av_log(0,0,"buf=[%s]\n",ptr);
     while(*ptr=='\r' || *ptr=='\n' || *ptr=='$' || (ptr[0]=='/' && ptr[1]=='/'))
        ptr+=ff_subtitles_next_line(ptr);
    if (sscanf(ptr, "%*d:%*d:%*d:%*d , %*d:%*d:%*d:%*d , %c", &c) == 1)
        return AVPROBE_SCORE_MAX;
     return 0;

}