diff -p -up comm-beta/mozilla/content/html/content/public/nsHTMLMediaElement.h.h.264-youtube comm-beta/mozilla/content/html/content/public/nsHTMLMediaElement.h
--- comm-beta/mozilla/content/html/content/public/nsHTMLMediaElement.h.h.264-youtube	2012-07-22 21:37:36.666532783 +0200
+++ comm-beta/mozilla/content/html/content/public/nsHTMLMediaElement.h	2012-07-22 21:38:35.283979047 +0200
@@ -298,7 +298,7 @@ public:
   static bool IsH264Enabled();
   static bool IsH264Type(const nsACString& aType);
   static const char gH264Types[3][17];
-  static char const *const gH264Codecs[6];
+  static char const *const gH264Codecs[7];
 #endif
 
 #ifdef MOZ_MEDIA_PLUGINS
diff -p -up comm-beta/mozilla/content/html/content/src/nsHTMLMediaElement.cpp.h.264-youtube comm-beta/mozilla/content/html/content/src/nsHTMLMediaElement.cpp
--- comm-beta/mozilla/content/html/content/src/nsHTMLMediaElement.cpp.h.264-youtube	2012-07-21 19:53:31.000000000 +0200
+++ comm-beta/mozilla/content/html/content/src/nsHTMLMediaElement.cpp	2012-07-22 21:16:21.149558191 +0200
@@ -2083,7 +2083,8 @@ const char nsHTMLMediaElement::gH264Type
   "video/quicktime",
 };
 
-char const *const nsHTMLMediaElement::gH264Codecs[6] = {
+char const *const nsHTMLMediaElement::gH264Codecs[7] = {
+  "avc1.42001E",
   "avc1.42E01E",
   "avc1.58A01E",
   "avc1.4D401E",