diff --git a/doc/Analytics.xml b/doc/Analytics.xml
index 64630df7b..79da8a5de 100644
--- a/doc/Analytics.xml
+++ b/doc/Analytics.xml
@@ -657,6 +657,32 @@
 </tt:Frame>
 ]]></programlisting>
         </section>
+        </section>
+        <section>
+          <title>Aspect Ratio Dependant Transformation</title>
+          <para>This section describes the transformation specific to a scene aspect ratio.</para>
+          <para>Same as the transformation node, this node is used to apply final geometric transformations to the scene elements when the device supports more than one aspect ratio. This node allows the client to choose which transformation to apply, matching the metadata aspect ratio to the rendered aspect ratio.</para>
+          <para>The aspect ratio transformation node can contain the following elements:</para>
+          <programlisting><![CDATA[<xs:complexType name="AspectRatioTransformation">
+  <xs:sequence>
+    <xs:element name="Translate" type="Vector" minOccurs="0"/>
+    <xs:element name="Scale" type="Vector" minOccurs="0"/>
+    ...
+  </xs:sequence>
+</xs:complexType>
+]]></programlisting>
+          <para>For example, the coordinates of the scene description are given in a frame coordinate system, where the lower-left corner has coordinates (0,0) and the upper-right corner coordinates (320,240). The video source aspect ratio is 4:3. The frame node resembles the following code, where the scale is set to crop the image to other supported aspect ratios:</para>
+          <programlisting><![CDATA[<tt:Frame UtcTime="2008-10-10T12:24:57.321">
+  <tt:AspectRatioTransformation ratio="1.66666667">
+    <tt:Scale x="1" y="1.25"/>
+  </tt:AspectRatioTransformation>
+  <tt:AspectRatioTransformation ratio="1.77777778>
+    <tt:Scale x="1" y="1.33333333"/>
+  </tt:AspectRatioTransformation>
+  ...
+</tt:Frame>
+]]></programlisting>
+      <para>In every Frame, the device must add the nodes for at least the currently configured aspect ratios. The node for the video source aspect ratio should be omitted.</para>
       </section>
       <section>
         <title>Scene Elements</title>
diff --git a/wsdl/ver10/schema/common.xsd b/wsdl/ver10/schema/common.xsd
index 152655db5..849f23e30 100644
--- a/wsdl/ver10/schema/common.xsd
+++ b/wsdl/ver10/schema/common.xsd
@@ -267,6 +267,14 @@ IN NO EVENT WILL THE CORPORATION OR ITS MEMBERS OR THEIR AFFILIATES BE LIABLE FO
 			<xs:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>	<!-- first Vendor then ONVIF -->
 		</xs:sequence>
 	</xs:complexType>
+	<xs:complexType name="AspectRatioTransformation">
+		<xs:sequence>
+			<xs:element name="Translate" type="tt:Vector" minOccurs="0"/>
+			<xs:element name="Scale" type="tt:Vector" minOccurs="0"/>
+            <xs:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
+		</xs:sequence>
+		<xs:anyAttribute processContents="lax"/>
+	</xs:complexType>
 	<!--===============================-->
 	<!--  Location/Orientation Types   -->
 	<!--===============================-->
diff --git a/wsdl/ver10/schema/metadatastream.xsd b/wsdl/ver10/schema/metadatastream.xsd
index 83973628e..463122f6e 100644
--- a/wsdl/ver10/schema/metadatastream.xsd
+++ b/wsdl/ver10/schema/metadatastream.xsd
@@ -291,6 +291,7 @@ IN NO EVENT WILL THE CORPORATION OR ITS MEMBERS OR THEIR AFFILIATES BE LIABLE FO
 			<xs:element name="Extension" type="tt:FrameExtension" minOccurs="0"/>
 			<xs:element name="SceneImageRef" type="xs:anyURI" minOccurs="0"/>
 			<xs:element name="SceneImage" type="xs:base64Binary" minOccurs="0"/>
+			<xs:element name="AspectRatioTranformation" type="tt:AspectRatioTransformation" minOccurs="0"/>
 			<xs:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>	<!-- reserved for ONVIF -->
 		</xs:sequence>
 		<xs:attribute name="UtcTime" type="xs:dateTime" use="required"/>