python access webcam code example

Example 1: how to open webcam with python

import cv2

cap = cv2.VideoCapture(0)

# Check if the webcam is opened correctly
if not cap.isOpened():
    raise IOError("Cannot open webcam")

while True:
    ret, frame = cap.read()
    frame = cv2.resize(frame, None, fx=0.5, fy=0.5, interpolation=cv2.INTER_AREA)
    cv2.imshow('Input', frame)

    c = cv2.waitKey(1)
    if c == 27:
        break

cap.release()
cv2.destroyAllWindows()

Example 2: access webcam using opencv

import cv2

cap = cv2.VideoCapture(0)

while True:
  ret, frame = cap.read()
  
  cv2.imshow('webcam feed' , frame)
  if cv2.waitKey(1) & 0xFF == ord(' '):
    break
    
cap.release()
cv2.destroyAllWindows()

#by using the spacebar you will be able to finish the process of video capturing
#in opencv and the window will close