set_clock_at     1401 fftools/ffplay.c     set_clock_at(c, pts, serial, time);
set_clock_at     2496 fftools/ffplay.c         set_clock_at(&is->audclk, is->audio_clock - (double)(2 * is->audio_hw_buf_size + is->audio_write_buf_size) / is->audio_tgt.bytes_per_sec, is->audio_clock_serial, audio_callback_time / 1000000.0);