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app.py

+# Python program to save a
+# video using OpenCV
+
+
+import cv2
+import os
+
+# Create an object to read
+# from camera
+video = cv2.VideoCapture(os.environ['RTSP_URL'])
+
+# We need to check if camera
+# is opened previously or not
+if (video.isOpened() == False):
+    print("Error reading video file")
+
+# We need to set resolutions.
+# so, convert them from float to integer.
+frame_width = int(video.get(3))
+frame_height = int(video.get(4))
+
+size = (frame_width, frame_height)
+
+# Below VideoWriter object will create
+# a frame of above defined The output
+# is stored in 'filename.avi' file.
+file_name = os.path.join(os.getcwd() , os.environ["FILE_NAME"] + ".avi")
+result = cv2.VideoWriter(file_name,
+                         cv2.VideoWriter_fourcc(*'MJPG'),
+                         10, size)
+
+while (True):
+    ret, frame = video.read()
+
+    if ret == True:
+
+        # Write the frame into the
+        # file 'filename.avi'
+        print(type(result))
+        result.write(frame)
+
+        # Display the frame
+        # saved in the file
+        # cv2.imshow('Frame', frame)
+
+        # Press S on keyboard
+        # to stop the process
+        if cv2.waitKey(1) & 0xFF == ord('s'):
+            break
+
+    # Break the loop
+    else:
+        break
+
+# When everything done, release
+# the video capture and video
+# write objects
+video.release()
+# result.release()
+
+# Closes all the frames
+cv2.destroyAllWindows()
+
+print("The video was successfully saved")
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