| import os |
| import cv2 |
| import argparse |
| from PIL import Image, ImageSequence |
| from tqdm import tqdm |
|
|
| def extract_frames_from_mp4(video_path, output_dir): |
| """Extract frames from an MP4 video.""" |
| cap = cv2.VideoCapture(video_path) |
| if not cap.isOpened(): |
| print(f"[ERROR] Failed to open video: {video_path}") |
| return |
|
|
| count = 0 |
| while True: |
| ret, frame = cap.read() |
| if not ret: |
| break |
| frame = cv2.resize(frame, (512, 512)) |
| frame = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB) |
| img = Image.fromarray(frame) |
| img.save(os.path.join(output_dir, f"frame_{count:04d}.png")) |
| count += 1 |
| cap.release() |
|
|
| def extract_frames_from_gif(gif_path, output_dir): |
| """Extract frames from a GIF file.""" |
| with Image.open(gif_path) as im: |
| count = 0 |
| for frame in ImageSequence.Iterator(im): |
| frame = frame.convert("RGB").resize((512, 512)) |
| frame.save(os.path.join(output_dir, f"frame_{count:04d}.png")) |
| count += 1 |
|
|
| def main(args): |
| input_path = args.input_path |
| output_path = args.output_path |
|
|
| if not os.path.exists(output_path): |
| os.makedirs(output_path) |
|
|
| video_files = [f for f in os.listdir(input_path) |
| if f.lower().endswith(('.mp4', '.gif'))] |
|
|
| if not video_files: |
| print("[WARNING] No MP4 or GIF files found in the input directory.") |
| return |
|
|
| for video_file in tqdm(video_files): |
| video_name = os.path.splitext(video_file)[0] |
| video_path = os.path.join(input_path, video_file) |
| save_dir = os.path.join(output_path, video_name) |
| os.makedirs(save_dir, exist_ok=True) |
|
|
| if video_file.lower().endswith('.mp4'): |
| extract_frames_from_mp4(video_path, save_dir) |
| elif video_file.lower().endswith('.gif'): |
| extract_frames_from_gif(video_path, save_dir) |
| print("All done!") |
|
|
| if __name__ == "__main__": |
| parser = argparse.ArgumentParser(description="Video preprocessing script (supports MP4 and GIF).") |
| parser.add_argument("--input_path", type=str, required=True, |
| help="Path to the folder containing videos.") |
| parser.add_argument("--output_path", type=str, required=True, |
| help="Path to save extracted frames.") |
| args = parser.parse_args() |
| main(args) |
|
|
| |
|
|
