import cv2
import os

def extract_frames(video_path, out_dir, every_n=15):
    cap = cv2.VideoCapture(video_path)
    frames = []
    count = 0
    idx = 0

    while cap.isOpened():
        ret, frame = cap.read()
        if not ret:
            break

        if count % every_n == 0:
            frame_path = os.path.join(out_dir, f"frame_{idx}.jpg")
            cv2.imwrite(frame_path, frame)
            frames.append(frame_path)
            idx += 1

        count += 1

    cap.release()
    return frames