+ if (par->field_order == AV_FIELD_PROGRESSIVE)
+ print_str("field_order", "progressive");
+ else if (par->field_order == AV_FIELD_TT)
+ print_str("field_order", "tt");
+ else if (par->field_order == AV_FIELD_BB)
+ print_str("field_order", "bb");
+ else if (par->field_order == AV_FIELD_TB)
+ print_str("field_order", "tb");
+ else if (par->field_order == AV_FIELD_BT)
+ print_str("field_order", "bt");
+ else
+ print_str_opt("field_order", "unknown");
+