Nokia, Apple, Adobe, Real - уроды.

Вот результат их "деятельности":

-  <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>