diff --git a/python/kontor/controllers/media.py b/python/kontor/controllers/media.py
index e39c724..ecee44d 100644
--- a/python/kontor/controllers/media.py
+++ b/python/kontor/controllers/media.py
@@ -59,3 +59,21 @@ class Media(Controller):
 
         else:
             print("no url was given.")
+
+    @ex(
+        help='check files if existing',
+        arguments=[
+            (['-d', '--dir'],
+             {'help': 'directory to store videos',
+              'action': 'store',
+              'dest': 'media_dir'})
+        ],
+    )
+    def check(self):
+        data = {
+            'media_dir': '/data/media',
+        }
+        if self.app.pargs.media_dir is not None:
+            data['media_dir'] = self.app.pargs.media_dir
+        kontor_db = KontorDB(self.app.engine, self.app.config, self.app.log)
+        kontor_db.check_files()
diff --git a/python/kontor/database/__init__.py b/python/kontor/database/__init__.py
index 0c524fa..031799b 100644
--- a/python/kontor/database/__init__.py
+++ b/python/kontor/database/__init__.py
@@ -322,8 +322,14 @@ class KontorDB:
                 filename = self.download_url(link)
                 if filename is None:
                     link.file_name = filename
+                    link.should_download = 1
+                else:
+                    download_file = Path(filename)
+                    download_file.with_name(f"{link.id}{download_file.suffix}")
+                    link.file_name = download_file.name
                     link.should_download = 0
-                    session.commit()
+                    link.cloud_link = download_file.absolute()
+                session.commit()
 
     def parse_output(self, lines_list):
         file_name = ""
@@ -354,3 +360,9 @@ class KontorDB:
             return self.parse_output(lines_list)
         else:
             return None
+
+    def check_files(self):
+        media_dir = Path(self.config.get('media', 'dir'))
+        if not media_dir.exists():
+            return
+        self.log.info(f"check files in {media_dir}")
diff --git a/python/kontor/gui/main_window.py b/python/kontor/gui/main_window.py
index eaba732..a835b89 100644
--- a/python/kontor/gui/main_window.py
+++ b/python/kontor/gui/main_window.py
@@ -62,6 +62,8 @@ class MainWindow(QMainWindow):
         self.updateTitleAction.triggered.connect(self.update_title)
         self.downloadAction = QAction("&Download Videos", self)
         self.downloadAction.triggered.connect(self.download_file)
+        self.checkFileAction = QAction("&Check files", self)
+        self.checkFileAction.triggered.connect(self.check_files)
         self.exitAction = QAction("&Beenden", self)
         self.exitAction.setShortcut("Alt+F4")
         self.exitAction.triggered.connect(self.close)
@@ -82,6 +84,7 @@ class MainWindow(QMainWindow):
         media_file_menu = QMenu("&MediaFile")
         media_file_menu.addAction(self.updateTitleAction)
         media_file_menu.addAction(self.downloadAction)
+        media_file_menu.addAction(self.checkFileAction)
         kontor_menu.addMenu(comic_menu)
         kontor_menu.addMenu(tysc_menu)
         kontor_menu.addMenu(media_file_menu)
@@ -134,6 +137,11 @@ class MainWindow(QMainWindow):
         self.statusBar.showMessage("download videos for table MediaFile", 3000)
         self.kontor_db.download_file()
 
+    def check_files(self):
+        self.log.info("check files")
+        self.statusBar.showMessage("check files for table MediaFile", 3000)
+        self.kontor_db.check_files()
+
     def refresh(self):
         self.data[self.tabs.currentIndex()].refresh()