clarify height width and fps

README.md

@@ -294,11 +294,11 @@ cameras:
       # Optional: camera specific output args (default: inherit)
       output_args:
     
-    # Required: height of the frame
+    # Required: height of the frame for the input with the detect role
     height: 720
-    # Required: width of the frame
+    # Required: width of the frame for the input with the detect role
     width: 1280
-    # Optional: desired fps for your camera
+    # Optional: desired fps for your camera for the input with the detect role
     # NOTE: Recommended value of 5. Ideally, try and reduce your FPS on the camera.
     #       Frigate will attempt to autodetect if not specified.
     fps: 5