diff --git a/navipy/database/__init__.py b/navipy/database/__init__.py
index 5e847ad02cbb1f334dc1b0142c72b84c0a79c520..325234ff190d44ff144b1240a477fc4a157bca2a 100644
--- a/navipy/database/__init__.py
+++ b/navipy/database/__init__.py
@@ -133,7 +133,7 @@ class DataBase():
         for col in self.normalisation_columns:
             self.tablecolumns['normalisation'][col] = 'real'
 
-        if self.create is False:
+        if (self.create is False) or (os.path.exists(filename)):
             self._logger.info('Connect to database')
 
             if os.path.exists(filename) or filename == ':memory:':
diff --git a/navipy/sensors/renderer.py b/navipy/sensors/renderer.py
index d87021cb6b6098287886ec76aaee1507d7e54772..9590ab80a84c66fa3b9702afb5f9dbccb0edcd88 100644
--- a/navipy/sensors/renderer.py
+++ b/navipy/sensors/renderer.py
@@ -89,7 +89,8 @@ class AbstractRender():
             # Check if posorient is a valid one
             # otherwise skip to next position
             if np.any(np.isnan(posorient)):
-                # Skip because we can not render when night
+                # Skip because we can not render when nans
+                self._logger.info('Skip nan frame_i : {}'.format(frame_i))
                 continue
             # Avoid rerendering by checking if data already
             # exist
@@ -110,6 +111,7 @@ class AbstractRender():
             # The position-orientatios is valid (none nan)
             # and the cmaxminrange has not already been assigned
             # so the image need to be rendered
+            self._logger.info('Update frame_i : {}'.format(frame_i))
             scene = self.scene(posorient)
             check_scene(scene)
             scene = scene[..., 0]
@@ -552,6 +554,13 @@ class BlenderRender(AbstractRender):
         :type posorient: pandas Series with multi-index
         """
         if isinstance(posorient, pd.Series):
+            # set frame
+            cframe = int(posorient.name)
+            if cframe > bpy.context.scene.frame_end:
+                bpy.context.scene.frame_end = cframe
+            if cframe < bpy.context.scene.frame_start:
+                bpy.context.scene.frame_start = cframe
+            bpy.context.scene.frame_current = cframe
             # set roation mode
             conv_found = False
             index = posorient.index