print_duration_ts 1718 ffprobe.c          print_duration_ts("duration",        pkt->duration);
print_duration_ts 1720 ffprobe.c          print_duration_ts("convergence_duration", pkt->convergence_duration);
print_duration_ts 1779 ffprobe.c          print_duration_ts  ("pkt_duration",      av_frame_get_pkt_duration(frame));