diff --git a/video_filter.module b/video_filter.module
index 248bc37..e1144f7 100644
--- a/video_filter.module
+++ b/video_filter.module
@@ -125,6 +125,20 @@ function _video_filter_process($text, $filter, $format, $langcode, $cache, $cach
         'related' => $filter->settings['video_filter_related'],
       );
 
+      // detect default or 100% settings
+      if (isset($matches_code[3]) && isset($matches_code[3][0]) && is_string($matches_code[3][0])) {
+        if (
+	    (strrpos($matches_code[3][0], 'width:100%') > 0) ||
+	    (strrpos($matches_code[3][0], 'height:100%') > 0) ||
+	    (
+	      (strrpos($matches_code[3][0], 'width:') === FALSE) &&
+	      (strrpos($matches_code[3][0], 'height:') === FALSE)
+	    )
+	) {
+	  $video['fluidvids'] = TRUE;
+	}
+      }
+
       // Pick random out of multiple sources separated by comma (,).
       if (strstr($video['source'], ',')) {
         $sources          = explode(',', $video['source']);
@@ -361,6 +375,11 @@ function video_filter_get_classes($video) {
     $classes[] = 'video-' . $video['align'];
   }
 
+  // Add fluidvids class.
+  if (isset($video['fluidvids'])) {
+    $classes[] = 'video-fluidvids';
+  }
+
   // First match is the URL, we don't want that as a class.
   unset($video['codec']['matches'][0]);
   foreach ($video['codec']['matches'] as $match) {
@@ -681,3 +700,13 @@ function video_filter_oembed_request($endpoint, array $arguments) {
     return FALSE;
   }
 }
+
+/**
+ * Implements hook_init().
+ */
+function video_filter_init() {
+  if (file_exists('sites/all/libraries/fluidvids/fluidvids.js')) {
+    drupal_add_js('sites/all/libraries/fluidvids/fluidvids.js', array('type' => 'file', 'scope' => 'footer', 'weight' => 10));
+    drupal_add_js('fluidvids.init({selector:[".video-fluidvids"]});', array('type' => 'inline', 'scope' => 'footer', 'weight' => 11));
+  }
+}