MI_MODE_DUP       207 libavfilter/vf_minterpolate.c     { "mi_mode", "motion interpolation mode", OFFSET(mi_mode), AV_OPT_TYPE_INT, {.i64 = MI_MODE_MCI}, MI_MODE_DUP, MI_MODE_MCI, FLAGS, "mi_mode" },
MI_MODE_DUP       208 libavfilter/vf_minterpolate.c         CONST("dup",    "duplicate frames",                     MI_MODE_DUP,            "mi_mode"),
MI_MODE_DUP      1107 libavfilter/vf_minterpolate.c         case MI_MODE_DUP: