Guidelines for addition of scalabilityMode values

Fix for Issue #3

Rebase of PR #25

index.html

@@ -499,6 +499,30 @@ <h3>Scalability modes</h3>
         </tr>
       </tbody>
     </table>
+    <section id="addingmodes*">
+      <h3>Guidelines for addition of <code>scalabilityMode></code> values</h3>
+      <p>When proposing a <code>scalabilityMode</code> value, the following principles should be followed:</p>
+        <ol>
+          <li>
+            The proposed <code>scalabilityMode</code> MUST define entries to the table in
+            Section 6, including values for the Scalabilty Mode Identifier, spatial and
+            temporal layers, Resolution Ratio and Inter-layer dependency.
+          </li>
+          <li>
+            The Scalability Mode Identifier SHOULD be consistent with the existing naming
+            scheme in which "LxTy" denotes a <code>scalabilityMode</code> with <code>x</code>
+            spatial layers and <code>y</code> temporal layers, "SxTy" denotes a
+            <code>scalabilityMode</code> with <code>x</code> simulcast streams, each of which
+            has <code>y</code> temporal layers, and post-pending an "h" denotes a resolution
+            ratio of 1.5 to 1.
+          </li>
+          <li>
+            If the new <code>scalabilityMode</code> does not reference a dependency diagram
+            defined within an existing specification, then a dependency diagram MUST be
+            supplied.
+          </li>         
+        </ol>
+    </section>
   </section>
   <section id="rtcrtpencodingparameters-example*">
       <h3>Examples</h3>