diff --git a/frame_opencv.py b/frame_opencv.py
index dda167e..fbe25ff 100644
--- a/frame_opencv.py
+++ b/frame_opencv.py
@@ -800,15 +800,8 @@ def get_frames_list(folder:str):
 def get_frame_by_idx(folder:str, index:int):
     # Refresh file list
     existing_animation_files = get_frames_list(folder)
-    # Get last file
     # Filename pattern is A.0001.JPG
-    if index and index in range(len(existing_animation_files)):
-        frm = cv2.imread(os.path.join(folder, existing_animation_files[index]))
-        frm = cv2.resize(frm, (project_settings['screen_w'], project_settings['screen_h']))
-        return frm
-    else:
-        return generate_text_image(_("Image not found."), project_settings['screen_w'], project_settings['screen_h'])
-
+    return existing_animation_files[index].split('.')
 
 def get_last_frame(folder:str):
     # Refresh file list
@@ -826,8 +819,11 @@ def get_before_last_frame(folder:str):
     return existing_animation_files[-2]
 
 
-def get_onionskin_frame(folder:str):
-    prev_image = get_last_frame(folder)
+def get_onionskin_frame(folder:str, index:int=-1):
+    if index == -1:
+        prev_image = get_last_frame(folder)
+    else:
+        prev_image = get_frame_by_idx(folder, index)
     prev_image = '.'.join(prev_image)
     if os.path.exists(os.path.expanduser(os.path.join(savepath, prev_image))):
         frm = cv2.imread(os.path.join(savepath, prev_image))
@@ -913,6 +909,18 @@ def batch_rename(folder:str):
     return get_frames_list(folder)
 
 
+def batch_rename_reversed(folder:str, from_index:int=0):
+    # initialize counter to 0
+    frame_list = get_frames_list(os.path.realpath(folder))
+    print(frame_list[from_index:])
+    counter = (".%04i." % x for x in count(len(frame_list), -1))
+    for i in reversed(frame_list[from_index:]):
+        if os.path.exists(os.path.join(folder, i)):
+            cnt = next(counter)
+            os.rename(os.path.join(folder, i), os.path.join(folder, "{}{}{}".format(project_letter, cnt, project_settings['file_extension'])))
+    return get_frames_list(folder)
+
+
 def offset_dictvalues(from_index=0):
     dict_copy = dict(img_list)
     for i in range(from_index, len(dict_copy)):
@@ -945,6 +953,19 @@ def remove_frame(img_list:list, img_index:int):
     else:
         return img_list, 0, blank_image
 
+def insert_frame(img_list:list, frame_name:str, img_index:int):
+    if len(img_list) > img_index:
+        folder_path = os.path.realpath(savepath)
+        # ~ frame_name = img_list[img_index]
+        frame_path = os.path.join(folder_path, frame_name)
+        # ~ if not os.path.exists(frame_path):
+            # ~ return img_list, img_index, blank_image
+        print(_("Inserting {}").format(frame_path))
+        # rename files and get new list
+        img_list = batch_rename_reversed(folder_path, img_index+1)
+        return img_list, img_index
+    else:
+        return img_list, 0
 
 def testDevice(source):
     cap = cv2.VideoCapture(source)
@@ -1155,7 +1176,12 @@ def main(args):
         # SPACE or numpad 0 pressed
         elif (k%256 == 32) or (k%256 == 48) or (k%256 == 176):
             print(_("Capture frame"))
-            img_name = return_next_frame_number(get_last_frame(savepath))
+            # ~ img_name = return_next_frame_number(get_last_frame(savepath))
+            img_name = return_next_frame_number(img_list[index].split('.'))
+            if img_name in img_list:
+                insert_frame(img_list, img_name, index)
+            else:
+                img_name = return_next_frame_number(get_last_frame(savepath))
             img_path = os.path.join(savepath, img_name)
             capture_ok = cam.capture_frame(img_path)
             if capture_ok:
@@ -1164,9 +1190,8 @@ def main(args):
                 if len(img_list) and (img_list[index] == '{letter}.-001.{ext}'.format(letter=project_letter, ext=project_settings['file_extension'])):
                     img_list[index] = img_name
                 else:
-                    # Move to last frame
-                    index = len(img_list)
-                cam.frame = get_onionskin_frame(savepath)
+                    index += 1  
+                cam.frame = get_onionskin_frame(savepath, index)
                 cam.o_frame = cam.frame.copy()
             else:
                 print(_("Error during capture. Try again."))