| | 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" |
| | ) |
