Index: wp-includes/js/media-views.js
===================================================================
--- wp-includes/js/media-views.js	(revision 24777)
+++ wp-includes/js/media-views.js	(working copy)
@@ -462,9 +462,12 @@
 		},
 
 		canEmbed: function( attachment ) {
-			var type = attachment.get('type');
-			if ( type !== 'audio' && type !== 'video' )
-				return false;
+			// If uploading, we know the filename but not the mime type.
+			if ( ! attachment.get('uploading') ) {
+				var type = attachment.get('type');
+				if ( type !== 'audio' && type !== 'video' )
+					return false;
+			}
 
 			return _.contains( media.view.settings.embedExts, attachment.get('filename').split('.').pop() );
 		},
Index: wp-includes/media-template.php
===================================================================
--- wp-includes/media-template.php	(revision 24777)
+++ wp-includes/media-template.php	(working copy)
@@ -297,16 +297,11 @@
 						data-user-setting="urlbutton"
 					<# } #>>
 
-				<# if ( data.model.canEmbed && 'audio' === data.type ) { #>
+				<# if ( data.model.canEmbed ) { #>
 					<option value="embed" selected>
-						<?php esc_attr_e('Embed Audio Player'); ?>
+						<?php esc_attr_e('Embed Media Player'); ?>
 					</option>
 					<option value="file">
-				<# } else if ( data.model.canEmbed && 'video' === data.type ) { #>
-					<option value="embed" selected>
-						<?php esc_attr_e('Embed Video Player'); ?>
-					</option>
-					<option value="file">
 				<# } else { #>
 					<option value="file" selected>
 				<# } #>