@property
     def size(self) -> float:
+        """If file at .full_path, return its megabytes size, else -1."""
         if not self.full_path.is_file():
             return -1
         return self.full_path.stat().st_size / (1024 * 1024)
     def _send_files_index(self, filter_: ParamsStr, show_absent: bool) -> None:
         conn = DbConnection()
         files = [f for f in VideoFile.get_all(conn)
-                 if filter_ in str(f.rel_path) and (show_absent or f.present)]
+                 if filter_.lower() in str(f.rel_path).lower()
+                 and (show_absent or f.present)]
         conn.commit_close()
         files.sort(key=lambda t: t.rel_path)
         self._send_rendered_template(