diff --git a/app.py b/app.py
index a6c9cb6..662e88f 100644
--- a/app.py
+++ b/app.py
@@ -73,6 +73,9 @@ def worker(id,source,region=None,stream=False):
             use = datetime.now().strftime('%Y-%m-%d %H:%M:%S')
             bgn = (time.time()*1000)
             ret, frame = cap.read()
+            del(ret)
+            del(frame)
+            ret, frame = cap.read()
             use += " read:"+str((time.time()*1000) - bgn)
             if not ret:
                 print("Error read video stream.")