void av_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den) { unsigned int gcd= av_gcd(pts_num, pts_den); s->pts_wrap_bits = pts_wrap_bits; s->time_base.num = pts_num/gcd; s->time_base.den = pts_den/gcd; if(gcd>1) av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, gcd); }