我在我的docker文件中使用以下代码进行视频流 import numpy as np
import cv2
cap = cv2.VideoCapture(0)
# Define the codec and create VideoWriter object
#fourcc = cv.VideoWriter_fourcc(*'XVID')
total_frame=0
while cap.isOpened():
ret, frame = cap.read()
print(ret)
if not ret:
print("Can