Clarify meaning

getusermedia.html

@@ -1661,7 +1661,7 @@ <h2>Constrainable Properties</h2>
               should span the video source's pre-set frame rate values with
               min being equal to 0 and max being the largest frame rate.
               The User Agent MUST support frame rates obtained from
-              integral decimation between 1 and the native resolution frame rate.
+              integral decimation of the native resolution frame rate.
               If this frame rate cannot be determined (e.g. the source does not
               natively provide a frame rate, or the frame rate cannot be
               determined from the source stream), then this value MUST refer to