livefeed_cv2.py

# organize imports
import numpy as np
import cv2
  
# This will return video from the first webcam on your computer.
cap = cv2.VideoCapture(0)  
  
# Define the codec and create VideoWriter object
fourcc = cv2.VideoWriter_fourcc(*'XVID')
out = cv2.VideoWriter('output.avi', fourcc, 20.0, (640, 480))
  
# loop runs if capturing has been initialized. 
while(True):
    # reads frames from a camera 
    # ret checks return at each frame
    ret, frame = cap.read() 
  
    # Converts to grayscale space, OCV reads colors as BGR
    # frame is converted to gray
    myVideo = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
      
    # output the frame
    out.write(myVideo) 
      
    # The original input frame is shown in the window 
    cv2.imshow('Original', frame)  
      
    # Wait for 'a' key to stop the program 
    if cv2.waitKey(1) & 0xFF == ord('a'):
        break
  
# Close the window / Release webcam
cap.release()
out.release()
# After we release our webcam, we also release the out-out.release() 
  
# De-allocate any associated memory usage 
cv2.destroyAllWindows()