diff --git a/mediaelement.field.inc b/mediaelement.field.inc
--- a/mediaelement.field.inc
+++ b/mediaelement.field.inc
@@ -53,13 +53,13 @@
   );
 
   $element['width'] = array(
-    '#title' => t('Width'),
+    '#title' => t('Width (Specify using px or 100%)'),
     '#type' => 'textfield',
     '#default_value' => $settings['width'],
   );
 
   $element['height'] = array(
-    '#title' => t('Height'),
+    '#title' => t('Height (Specify using px or 100%)'),
     '#type' => 'textfield',
     '#default_value' => $settings['height'],
   );
@@ -85,7 +85,7 @@
 function mediaelement_field_formatter_settings_summary($field, $instance, $view_mode) {
   $display = $instance['display'][$view_mode];
   $settings = $display['settings'];
-  return t('Width: @width px, Height: @height px', array('@width' => $settings['width'], '@height' => $settings['height']));
+  return t('Width: @width, Height: @height', array('@width' => $settings['width'], '@height' => $settings['height']));
 }
 
 /**
@@ -106,12 +106,12 @@
     $js_settings['opts'] = array();
     $js_settings['controls'] = (bool)$settings['controls'];
     if ($display['type'] == 'mediaelement_video') {
-      $js_settings['opts']['videoHeight'] = (int)$settings['height'];
-      $js_settings['opts']['videoWidth'] = (int)$settings['width'];
+      $js_settings['opts']['videoHeight'] = $settings['height'];
+      $js_settings['opts']['videoWidth'] = $settings['width'];
     }
     elseif ($display['type'] == 'mediaelement_audio') {
-      $js_settings['opts']['audioHeight'] = (int)$settings['height'];
-      $js_settings['opts']['audioWidth'] = (int)$settings['width'];
+      $js_settings['opts']['audioHeight'] = $settings['height'];
+      $js_settings['opts']['audioWidth'] = $settings['width'];
     }
 
     $class = 'mediaelement-formatter-identifier-' . time() . '-' . $id++;