Python 如何将视频帧保存到新文件夹

我想知道如何运行循环，以便将文件中的所有视频的帧提取并保存到新文件中。到目前为止，我有以下代码：

import cv2
import os

# where the videos are stored
path = "/Users/harryhat/Desktop/Water Droplets/Videos of water droplets/Random"

for video_path in os.listdir(path):
    name, ext = os.path.splitext(video_path)
    if ext == '.avi':
        video_path = os.path.join(path, video_path)

        # Opens the Video file
        cap = cv2.VideoCapture(video_path)
        i = 0
        while(cap.isOpened()):
            ret, frame = cap.read()
        if ret == False:
            break
        cv2.imwrite(str(name)+str(i)+'.jpg', frame)
        i += 1
        cap.release()
        cv2.destroyAllWindows()

然而，在我运行它的那一刻，什么都没有发生，理想情况下，每个视频都会提取它们的帧，并放置在一个文件中，该文件中包含视频名称。关于如何实现这一点有什么建议吗？

您可以这样做

import cv2
import os
count=1

vidcap = cv2.VideoCapture('video.mp4')
def getFrame(sec):
    vidcap.set(cv2.CAP_PROP_POS_MSEC,sec*1000)
    hasFrames,image = vidcap.read()
    if hasFrames:
        dim = (512, 512) # you can change image height and image width
        resized = cv2.resize(image, dim, interpolation = cv2.INTER_AREA)
        cv2.imwrite("images/"+str(count)+".png", resized) # image write to image folder be sure crete image folder in same dir
    return hasFrames
sec = 0
frameRate = 0.1 # change frame rate as you wish, ex : 30 fps => 1/30

success = getFrame(sec)
while success:
    count = count + 1
    sec = sec + frameRate
    sec = round(sec, 2)
    success = getFrame(sec)

如果这有助于你