av_timecode_make_smpte_tc_string  322 libavformat/dv.c     av_timecode_make_smpte_tc_string(tc, AV_RB32(tc_pack + 1), prevent_df);
av_timecode_make_smpte_tc_string   96 libavutil/timecode.h char *av_timecode_make_smpte_tc_string(char *buf, uint32_t tcsmpte, int prevent_df);