diff --git a/tsmark/__init__.py b/tsmark/__init__.py
index 17364ad..f63b2ac 100644
--- a/tsmark/__init__.py
+++ b/tsmark/__init__.py
@@ -2,7 +2,7 @@ import argparse
 
 from tsmark.video_annotator import Marker
 
-VERSION = "0.7.1"
+VERSION = "0.7.2"
 
 
 def get_options():
diff --git a/tsmark/video_annotator.py b/tsmark/video_annotator.py
index 1d81e93..c6ca6a7 100755
--- a/tsmark/video_annotator.py
+++ b/tsmark/video_annotator.py
@@ -33,6 +33,7 @@ class Marker:
         self.auto_step = True
         self.font = cv2.FONT_HERSHEY_SIMPLEX
         self.frame_visu = []
+        self.frame_raw = []
         self.max_res = tuple([int(x) for x in self.opts.max_res.split("x")])
         self.min_res = (512, None)
         self.mouse_position = (0, 0)
@@ -860,12 +861,17 @@ class World:
         else:
             self.stamps = []
             self.nr = 0
-        # Read boundinb boxes from JSON
+        # Read bounding boxes from JSON
         if self.opts.input_points:
             if os.path.exists(self.opts.input_points):
                 with open(self.opts.input_points, "rt") as fp:
                     self.points = json.load(fp)
-                for index in self.points:
+                keys = list(self.points.keys())
+                for index in keys:
+                    # Remove empty dicts
+                    if len(self.points[index])==0:
+                        del self.points[index]
+                        continue
                     self.point_index = index
                     self.points[index] = {int(k): v for k, v in self.points[index].items()}
                     for key in self.points[index]:
@@ -961,6 +967,8 @@ class World:
                     points[index][key]["x1"], points[index][key]["y1"] = self.visual_to_original(
                         (self.points[index][key]["x1"], self.points[index][key]["y1"])
                     )
+                if len(points[index]) == 0:
+                    del points[index]
 
             with open(self.opts.output_points, "wt") as fp:
                 json.dump(points, fp, indent=2)
@@ -1030,6 +1038,7 @@ class World:
             show_time = time.time()
             if (not self.paused) or self.read_next:
                 ret, frame = self.video_reader.read()
+                self.frame_raw = frame
             if ret == True:
                 read_fails = 0
                 draw_wait = 200 if self.paused or (self.paused and self.point_click == 0) else 1
@@ -1037,6 +1046,7 @@ class World:
                 if (not self.paused) or self.read_next:
                     self.read_next = False
                 frame_visu = cv2.resize(frame.copy(), self.video_res)
+                self.frame_visu = frame_visu
                 self.draw_crop(frame_visu)
                 self.draw_points(frame_visu)
                 nr_time = self.nr / self.fps
@@ -1164,6 +1174,14 @@ class World:
                             2,
                             (255, 255, 255),
                         )
+                        self.shadow_text(
+                            frame_visu,
+                            "Exists: " + "".join(sorted(self.points.keys())),
+                            (20, 105),
+                            0.8,
+                            1,
+                            (255, 255, 255),
+                        )
                         cv2.imshow("tsmark", frame_visu)
 
                         k2 = cv2.waitKey(0)