import cv2
#two video
capture = cv2.VideoCapture(0)
capture_usb = cv2.VideoCapture(2)
if capture.isOpened():
if capture_usb.isOpened():
# 以下设置显示屏的宽高
capture.set(cv2.CAP_PROP_FRAME_WIDTH, 640)
capture.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)
capture_usb.set(cv2.CAP_PROP_FRAME_WIDTH, 640)
capture_usb.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)
while True:
read_code, frame = capture.read()
read_code2, frame2 = capture_usb.read()
if not read_code or not read_code2:
break
cv2.imshow(“screen_title”, frame)
cv2.imshow(“screen_title_usb”, frame2)
# 输入 q 键，保存当前画面为图片
if cv2.waitKey(1) == ord(‘q’):
# 设置图片分辨率
frame = cv2.resize(frame, (1920, 1080))
cv2.imwrite(‘pic.jpg’, frame)
capture_usb.release()
break
capture.release()
#cv2.destroyWindow(“screen_title”)
#注意在台式机后侧两个USB口是可以的，前面的usb口不可以，和硬件端口有关系。
