diff --git a/manimlib/mobject/frame.py b/manimlib/mobject/frame.py
index 9b4019f6..4ea2260d 100644
--- a/manimlib/mobject/frame.py
+++ b/manimlib/mobject/frame.py
@@ -5,14 +5,14 @@ from manimlib.utils.config_ops import digest_config
 
 class ScreenRectangle(Rectangle):
     CONFIG = {
-        "width_to_height_ratio": 16.0 / 9.0,
+        "aspect_ratio": 16.0 / 9.0,
         "height": 4
     }
 
     def __init__(self, **kwargs):
         Rectangle.__init__(self, **kwargs)
         self.set_width(
-            self.width_to_height_ratio * self.get_height(),
+            self.aspect_ratio * self.get_height(),
             stretch=True
         )
 
@@ -34,18 +34,14 @@ class FullScreenFadeRectangle(FullScreenRectangle):
 class PictureInPictureFrame(Rectangle):
     CONFIG = {
         "height": 3,
-        "aspect_ratio": (16, 9)
+        "aspect_ratio": 16.0 / 9.0
     }
 
     def __init__(self, **kwargs):
         digest_config(self, kwargs)
-        height = self.height
-        if "height" in kwargs:
-            kwargs.pop("height")
         Rectangle.__init__(
             self,
-            width=self.aspect_ratio[0],
-            height=self.aspect_ratio[1],
+            width=self.aspect_ratio * self.height,
+            height=self.height,
             **kwargs
         )
-        self.set_height(height)