+static const guid_t asf_object_extended_stream_properties_guid =
+{
+ 0x14E6A5CB,
+ 0xC672,
+ 0x4332,
+ { 0x83, 0x99, 0xA9, 0x69, 0x52, 0x06, 0x5B, 0x5A }
+};
+
+static const guid_t asf_object_header_extension_guid =
+{
+ 0x5FBF03B5,
+ 0xA92E,
+ 0x11CF,
+ { 0x8E, 0xE3, 0x00, 0xC0, 0x0C, 0x20, 0x53, 0x65 }
+};