[e] (0) Lift the cat who was amongst the pigeons up and put him back …

…on his pedestal for now. (remove requirement on ogg for now)

git-svn-id: http://svn.whatwg.org/webapps@1143 340c8d12-0b0e-0410-8428-c7bf67bfef74

index

@@ -2212,13 +2212,16 @@
   </dl>
 
   <p>This specification does not require support of any particular network
-   transport protocols, image formats, audio formats, video formats, style
-   sheet language, scripting language, or any of the DOM and WebAPI
-   specifications beyond those described above. However, the language
-   described by this specification is biased towards CSS as the styling
-   language, ECMAScript as the scripting language, and HTTP as the network
-   protocol, and several features assume that those languages and protocols
-   are in use.
+   transport protocols, style sheet language, scripting language, or any of
+   the DOM and WebAPI specifications beyond those described above. However,
+   the language described by this specification is biased towards CSS as the
+   styling language, ECMAScript as the scripting language, and HTTP as the
+   network protocol, and several features assume that those languages and
+   protocols are in use.
+
+  <p class=note>This specification might have certain additional requirements
+   on character encodings, image formats, audio formats, and video formats in
+   the respective sections.
 
   <h4 id=features><span class=secno>1.3.3. </span>Features defined in other
    specifications</h4>
@@ -13440,12 +13443,14 @@ The island of Shalott.&lt;/p></pre>
   <p>User agents may support any video and audio codecs and container
    formats.
 
-  <p>User agents should support Ogg Theora video and Ogg Vorbis audio, as
-   well as the Ogg container format. <a href="#refsOggTheora">[THEORA]</a> <a
-   href="#refsOggVorbis">[VORBIS]</a> <a href="#refsOgg">[OGG]</a></p>
-  <!-- (it's not a MUST because some vendors may have legal reasons
-  why they can't or won't support it, and there's no point making them
-  non-conforming when they have no choice in the matter) -->
+  <p class=big-issue>It would be helpful for interoperability if all browsers
+   could support the same codecs. However, there are no known codecs that
+   satisfy all the current players: we need a codec that is known to not
+   require per-unit or per-distributor licensing, that is compatible with the
+   open source development model, that is of sufficient quality as to be
+   usable, and that is not an additional submarine patent risk for large
+   companies. This is an ongoing issue and this section will be updated once
+   more information is available.</p>
   <!-- XXX mention that this spec doesn't require native support or
   plugin support, either is fine -->
 

source

@@ -614,13 +614,17 @@
   </dl>
 
   <p>This specification does not require support of any particular
-  network transport protocols, image formats, audio formats, video
-  formats, style sheet language, scripting language, or any of the DOM
-  and WebAPI specifications beyond those described above. However, the
-  language described by this specification is biased towards CSS as
-  the styling language, ECMAScript as the scripting language, and HTTP
-  as the network protocol, and several features assume that those
-  languages and protocols are in use.</p>
+  network transport protocols, style sheet language, scripting
+  language, or any of the DOM and WebAPI specifications beyond those
+  described above. However, the language described by this
+  specification is biased towards CSS as the styling language,
+  ECMAScript as the scripting language, and HTTP as the network
+  protocol, and several features assume that those languages and
+  protocols are in use.</p>
+
+  <p class="note">This specification might have certain additional
+  requirements on character encodings, image formats, audio formats,
+  and video formats in the respective sections.</p>
 
 
   <h4>Features defined in other specifications</h4>
@@ -11331,13 +11335,15 @@ The island of Shalott.&lt;/p></pre>
   <p>User agents may support any video and audio codecs and container
   formats.</p>
 
-  <p>User agents should support Ogg Theora video and Ogg Vorbis audio,
-  as well as the Ogg container format. <a
-  href="#refsOggTheora">[THEORA]</a> <a
-  href="#refsOggVorbis">[VORBIS]</a> <a href="#refsOgg">[OGG]</a></p>
-  <!-- (it's not a MUST because some vendors may have legal reasons
-  why they can't or won't support it, and there's no point making them
-  non-conforming when they have no choice in the matter) -->
+  <p class="big-issue">It would be helpful for interoperability if all
+  browsers could support the same codecs. However, there are no known
+  codecs that satisfy all the current players: we need a codec that is
+  known to not require per-unit or per-distributor licensing, that is
+  compatible with the open source development model, that is of
+  sufficient quality as to be usable, and that is not an additional
+  submarine patent risk for large companies. This is an ongoing issue
+  and this section will be updated once more information is
+  available.</p>
 
   <!-- XXX mention that this spec doesn't require native support or
   plugin support, either is fine -->