CHECK_ODD_FIELD   531 libavfilter/vf_nlmeans.c     CHECK_ODD_FIELD(research_size,   "Luma research window");
CHECK_ODD_FIELD   532 libavfilter/vf_nlmeans.c     CHECK_ODD_FIELD(patch_size,      "Luma patch");
CHECK_ODD_FIELD   537 libavfilter/vf_nlmeans.c     CHECK_ODD_FIELD(research_size_uv, "Chroma research window");
CHECK_ODD_FIELD   538 libavfilter/vf_nlmeans.c     CHECK_ODD_FIELD(patch_size_uv,    "Chroma patch");