diff --git a/custom_formats/SDTV.yml b/custom_formats/SDTV.yml
index e1a1255..80a7d73 100644
--- a/custom_formats/SDTV.yml
+++ b/custom_formats/SDTV.yml
@@ -8,4 +8,14 @@ conditions:
   required: true
   source: television
   type: source
+- name: Not 1080p
+  type: resolution
+  required: true
+  negate: true
+  resolution: 1080p
+- name: Not 720p
+  type: resolution
+  required: true
+  negate: true
+  resolution: 720p
 tests: []