如何在 OpenCV ( Python ) 中的视频的同一帧中显示图像？

Question

我正在尝试在 cv2 上显示视频，当视频结束时，我想显示和图像。现在我有这个代码，它运行良好。视频开始，当它超过一个新的帧时，它会打开以显示图像。但我想要的是当视频结束时图像显示在与视频相同的帧上。我怎样才能做到这一点？

import cv2
cap = cv2.VideoCapture('video.mp4')
img = cv2.imread('test.jpg', -1)
if (cap.isOpened() == False):
    print("Error opening video stream or file")
while (cap.isOpened()):
    ret, frame = cap.read()
    if ret == True:
        cv2.imshow('Frame', frame)
        if cv2.waitKey(25) == ord('q'):
            cv2.destroyAllWindows();
            break
    else:
        break
cap.release()
cv2.imshow('image', img)
k = cv2.waitKey(0) & 0xFF
if k == 27:
  cv2.destroyAllWindows()

Answer 1

你想在同一个窗口显示img，然后传入同名：

import cv2
cap = cv2.VideoCapture('video.mp4')
img = cv2.imread('test.jpg', -1)
if (cap.isOpened() == False):
    print("Error opening video stream or file")

while (cap.isOpened()):
    ret, frame = cap.read()
    if ret == True:
        cv2.imshow('Frame', frame)

        # add waitKey for video to display
        cv2.waitKey(1)

        if cv2.waitKey(25) == ord('q'):
            # do not close window, you want to show the frame
            # cv2.destroyAllWindows();
            break
    else:
        break
cap.release()
cv2.imshow('Frame', img)   # note the difference
k = cv2.waitKey(0) & 0xFF
if k == 27:
  cv2.destroyAllWindows()