METADATA_MODIFY   101 libavfilter/f_metadata.c     {   "modify", "modify metadata",     0,              AV_OPT_TYPE_CONST,  {.i64 = METADATA_MODIFY }, 0, 0, FLAGS, "mode" }, \
METADATA_MODIFY   215 libavfilter/f_metadata.c     if ((s->mode == METADATA_MODIFY ||
METADATA_MODIFY   329 libavfilter/f_metadata.c     case METADATA_MODIFY: