print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
if (frame->pkt_pos != -1) print_fmt ("pkt_pos", "%"PRId64, frame->pkt_pos);
else print_str_opt("pkt_pos", "N/A");
print_duration_time("pkt_duration_time", frame->pkt_duration, &stream->time_base);
if (frame->pkt_pos != -1) print_fmt ("pkt_pos", "%"PRId64, frame->pkt_pos);
else print_str_opt("pkt_pos", "N/A");