Extracting images using opencv and python or moviepy

I have a video (.mp4) that has ~ 8000 frames. I have a csv that tells me that I need to capture every frame in the video and the number of frames to capture. number_of_frames in video = 8000

times is an array of type [0.004, 0.005, ... 732s]

The last time in the data is 732s. thereforeFPS = 8000 / 732 = ~10

I want to be able to extract image frames from a video at these specific moments. Then write these paths to the .csv file.

I tried several approaches: First approach (openCV):

with open('./data/driving.csv', 'w') as csvfile:
fieldnames = ['image_path', 'time', 'speed']
writer = csv.DictWriter(csvfile, fieldnames = fieldnames)
writer.writeheader()
vidcap = cv2.VideoCapture('./data/drive.mp4')
for idx, item in enumerate(ground_truth):
    # set video capture to specific time frame
    # multiply time by 1000 to convert to milliseconds
    vidcap.set(cv2.CAP_PROP_POS_MSEC, item[0] * 1000)
    # read in the image
    success, image = vidcap.read()
    if success:
        image_path = os.path.join('./data/IMG/', str(item[0]) + 
     '.jpg')
        # save image to IMG folder
        cv2.imwrite(image_path, image)
        # write row to driving.csv
        writer.writerow({'image_path': image_path, 
                 'time':item[0],
                 'speed':item[1],
                })

      

        
        
        
      

    

This approach, however, did not give me the total number of frames I wanted. He just gave me the number of frames that would fit the video with FPS = 25. I believe my FPS = 8000 / 732s = 10.928s.

Then I tried using clippy to grab each image in a similar style:

from moviepy.editor import VideoFileClip
clip1 = VideoFileClip('./data/drive.mp4')
with open('./data/driving.csv', 'w') as csvfile:
    fieldnames = ['image_path', 'time', 'speed']
    writer = csv.DictWriter(csvfile, fieldnames = fieldnames)
    writer.writeheader()

    # Path to raw image folder
    abs_path_to_IMG = os.path.join('./data/IMG/')
    for idx, item in enumerate(ground_truth):
      image_path = os.path.join('./data/IMG/', str(item[0]) + '.jpg')
      clip1.save_frame(image_path, t = item[0])
      # write row to driving.csv
      writer.writerow({'image_path': image_path, 
             'time':item[0],
             'speed':item[1],
            })

      

        
        
        
      

    

However this approach didn't work either, for some reason I am capturing the last frame in the video hundreds of times.