diff --git a/cronjobs/opencast_discover_videos.php b/cronjobs/opencast_discover_videos.php
index 3ada125a..c58fe0f0 100644
--- a/cronjobs/opencast_discover_videos.php
+++ b/cronjobs/opencast_discover_videos.php
@@ -31,7 +31,7 @@ public function execute($last_result, $parameters = array())
         */
         $db = DBManager::get();
         $stmt_ids = $db->prepare("
-            SELECT episode FROM oc_video WHERE config_id = :config_id AND available=true
+            SELECT episode, version FROM oc_video WHERE config_id = :config_id AND available=true
         ");
 
         // iterate over all active configured oc instances
@@ -61,24 +61,39 @@ public function execute($last_result, $parameters = array())
             $event_ids = [];
             $events = [];
 
+            // get all known events in Stud.IP
+            $stmt_ids->execute([':config_id' => $config['id']]);
+
+            $local_events = $stmt_ids->fetchAll(PDO::FETCH_KEY_PAIR);
+            $local_event_ids = array_keys($local_events);
+
+            // load events from opencast filter the processed ones
             foreach ($api_client->getAll() as $event) {
                 // only add videos / reinspect videos if they are readily processed
                 if ($event->status == 'EVENTS.EVENTS.STATUS.PROCESSED') {
                     $event_ids[] = $event->identifier;
                     $events[$event->identifier] = $event;
-                }
-            }
 
-            // check if these event_ids have a corresponding entry in Stud.IP
+                    // check archive versions and if they differ, reinspect the video
+                    if (isset($local_events[$event->identifier])
+                        && $local_events[$event->identifier] != $event->archive_version
+                    ) {
+                        $video = Videos::findOneBySql("config_id = ? AND episode = ?", [$config['id'], $event->identifier]);
+                        echo 'schedule video for re-inspection, archive versions differ: ' . $video->id . ' (' . $video->title . ")\n";
 
-            $stmt_ids->execute([':config_id' => $config['id']]);
+                        // create task to update permissions and everything else
+                        $task = new VideoSync;
 
-            $local_event_ids = $stmt_ids->fetchAll(PDO::FETCH_COLUMN);
-            //echo 'found oc events:' . "\n";
-            //print_r($events);
+                        $task->setData([
+                            'video_id'  => $video->id,
+                            'state'     => 'scheduled',
+                            'scheduled' => date('Y-m-d H:i:s')
+                        ]);
 
-            //echo 'found local events:' . "\n";
-            //print_r($local_event_ids);
+                        $task->store();
+                    }
+                }
+            }
 
             // Find new videos available in OC but not locally
             foreach (array_diff($event_ids, $local_event_ids) as $new_event_id) {
@@ -135,7 +150,7 @@ public function execute($last_result, $parameters = array())
          * FAILED wird nur jede Stunde neu inspiziert
          * Das scheduled Feld wird genutzt, um Dinge für die Zukunft zu planen
          */
-        foreach (Videos::findBySql('preview IS NULL AND is_livestream = 0') as $video) {
+        foreach (Videos::findBySql('(preview IS NULL OR available = 0) AND is_livestream = 0') as $video) {
             // check, if there is already a task scheduled
             if (empty(VideoSync::findByVideo_id($video->id))) {
                 echo 'schedule video for re-inspection: ' . $video->id . ' (' . $video->title . ")\n";
diff --git a/cronjobs/opencast_worker.php b/cronjobs/opencast_worker.php
index d200e588..20d91fa3 100644
--- a/cronjobs/opencast_worker.php
+++ b/cronjobs/opencast_worker.php
@@ -81,6 +81,8 @@ public function execute($last_result, $parameters = array())
                     } else if ($event->status === "EVENTS.EVENTS.STATUS.PROCESSED" && !empty($event->publications)) {
                         $video->publication = json_encode($event->publications);
                         $video->state = null;
+                        $video->available = 1;
+                        $video->version   = $event->archive_version;
                         $video->is_livestream = 0;
                     } else if ($event->status === "EVENTS.EVENTS.STATUS.PROCESSED" && empty($event->publications)) {
                         if ($is_livestream && !empty($event->scheduling)) {
diff --git a/migrations/098_add_archive_version.php b/migrations/098_add_archive_version.php
new file mode 100644
index 00000000..f317dbb5
--- /dev/null
+++ b/migrations/098_add_archive_version.php
@@ -0,0 +1,22 @@
+<?php
+
+class AddArchiveVersion extends Migration
+{
+    public function description()
+    {
+        return 'Add Opencast archive version to Stud.IP for finding videos worth to reinspect';
+    }
+
+    public function up()
+    {
+        $db = DBManager::get();
+
+        $stmt = $db->exec('ALTER TABLE oc_video
+            ADD COLUMN `version` INT NOT NULL DEFAULT 0 AFTER config_id');
+    }
+
+    public function down()
+    {
+
+    }
+}
\ No newline at end of file