Index: functions.php
===================================================================
--- functions.php	(revision 23383)
+++ functions.php	(working copy)
@@ -1922,6 +1922,7 @@
 	'ogv' => 'video/ogg',
 	'webm' => 'video/webm',
 	'mkv' => 'video/x-matroska',
+	'3gp|3gpp2|3g2' => 'video/3gpp',
 	// Text formats
 	'txt|asc|c|cc|h' => 'text/plain',
 	'csv' => 'text/csv',