diff --git a/README.txt b/README.txt
index cee0629..89cf4d7 100644
--- a/README.txt
+++ b/README.txt
@@ -3,6 +3,9 @@ This is a highly flexible and easy extendable filter module to embed any type
 of video in your site using a simple tag. Other modules can add video
 sites/formats (called codecs) using an easy plug-in architecture.
 
+The Fluidvids library may optionally be used to make the video player
+responsive.
+
 ========= Installation =========
 
 Enable the module on the modules page.
@@ -22,6 +25,14 @@ processed after that filter.
 To enable WYSIWYG support, go to the WYSIWYG settings for each input format and
 enable the Video Filter button.
 
+To use the Fluidvids library, download a release from 
+  https://github.com/toddmotto/fluidvids
+into a directory at:
+  sites/all/libraries/fluidvids
+so that the library is available from:
+  sites/all/libraries/fluidvids/fluidvids.js
+
+
 ========= Usage =========
 
 Single video: [video:url]
diff --git a/video_filter.module b/video_filter.module
index a97615b..401be90 100644
--- a/video_filter.module
+++ b/video_filter.module
@@ -125,6 +125,17 @@ 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], $matches_code[3][0]) && is_string($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(',', $video['source']);
@@ -361,6 +372,11 @@ function video_filter_get_classes($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 $match) {
@@ -681,3 +697,13 @@ function video_filter_oembed_request($endpoint, array $arguments) {
     return FALSE;
   }
 }
+
+/**
+ * Implements hook_page_build().
+ */
+function video_filter_page_build() {
+  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));
+  }
+}