| import os |
| import cv2 |
| from tqdm import tqdm |
|
|
| def save_video_frames(input_dir, output_dir): |
|
|
| os.makedirs(output_dir, exist_ok=True) |
| |
| dir_frame_idx = None |
| for filename in tqdm(os.listdir(input_dir)): |
| if filename.lower().endswith('.mp4'): |
| video_path = os.path.join(input_dir, filename) |
| |
| base_name = os.path.splitext(filename)[0] |
| |
| cap = cv2.VideoCapture(video_path) |
| if not cap.isOpened(): |
| print(f"Warning: Cannot open {video_path}") |
| continue |
|
|
| frame_idx = 0 |
| while True: |
| ret, frame = cap.read() |
| |
| if not ret: |
| break |
| |
| output_filename = f"{base_name}_frame_{frame_idx}.png" |
| output_path = os.path.join(output_dir, output_filename) |
| |
| if not cv2.imwrite(output_path, frame): |
| print(f"Warnning: Cannot write {output_path}") |
| |
| frame_idx += 1 |
|
|
| cap.release() |
| |
| if dir_frame_idx == None: |
| dir_frame_idx = frame_idx |
| else: |
| if dir_frame_idx != frame_idx: |
| print(f"Warning: {video_path} has {frame_idx} frames, but {dir_frame_idx} frames in {input_dir}") |
| dir_frame_idx = min(dir_frame_idx, frame_idx) |
| |
| return dir_frame_idx |
|
|
| if __name__ == "__main__": |
| save_video_frames( |
| input_dir="aaa", |
| output_dir="bbb" |
| ) |
