Extract frames from pre-recored video with Python and OpenCV

video_to_frames.py

import cv2

def video_to_frames(video_filename):
    """Extract frames from video"""
    cap = cv2.VideoCapture(video_filename)
    video_length = int(cap.get(cv2.CAP_PROP_FRAME_COUNT)) - 1
    frames = []
    if cap.isOpened() and video_length > 0:
        frame_ids = [0]
        if video_length >= 4:
            frame_ids = [0, 
                         round(video_length * 0.25), 
                         round(video_length * 0.5),
                         round(video_length * 0.75),
                         video_length - 1]
        count = 0
        success, image = cap.read()
        while success:
            if count in frame_ids:
                frames.append(image)
            success, image = cap.read()
            count += 1
    return frames

Hi there, thank you so much for your code, it works great! But just wondering if it's possible to extract frames from all videos in a folder? I am a beginner in coding, so I got stuck on this problem for a while. It would you much appreciated if you could shed some light!

Hi there, thank you so much for your code, it works great! But just wondering if it's possible to extract frames from all videos in a folder? I am a beginner in coding, so I got stuck on this problem for a while. It would you much appreciated if you could shed some light!

Yes @bingyand, you can export images with cv2.imwrite("Image name",image) to write in the current directory.

@bingyand

This might be helpful https://gist.github.com/priteshgohil/b0a3d0e247b47db02b15685b3e55e3af