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import os |
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import shutil |
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import argparse |
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from pathlib import Path |
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import cv2 |
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def extract_frames_from_video(video_path, output_folder, num_frames=16): |
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cap = cv2.VideoCapture(video_path) |
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total_frames = int(cap.get(cv2.CAP_PROP_FRAME_COUNT)) |
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fps = cap.get(cv2.CAP_PROP_FPS) |
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interval = total_frames // num_frames |
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output_folder.mkdir(parents=True, exist_ok=True) |
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for i in range(num_frames): |
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cap.set(cv2.CAP_PROP_POS_FRAMES, i * interval) |
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ret, frame = cap.read() |
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if not ret: |
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break |
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frame_filename = output_folder / f"frame{i + 1}_{Path(video_path).stem}.jpg" |
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cv2.imwrite(str(frame_filename), frame) |
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cap.release() |
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def process_subfolders(root_path, folder_list, output_root): |
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for subfolder in Path(root_path).iterdir(): |
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if subfolder.is_dir(): |
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folder_name = subfolder.name |
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if folder_name not in folder_list: |
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continue |
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target_folder = subfolder / "frame_aligned_videos/downscaled/448" |
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if target_folder.exists() and target_folder.is_dir(): |
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for video_file in target_folder.glob("cam*.mp4"): |
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print(f"Processing video: {video_file}") |
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new_subfolder = Path(output_root) / subfolder.name |
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new_subfolder.mkdir(parents=True, exist_ok=True) |
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extract_frames_from_video(video_file, new_subfolder) |
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def move_and_rename_frames_from_file(file_path, destination_root, source_root): |
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with open(file_path, 'r') as f: |
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folder_list = [line.strip() for line in f.readlines()] |
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for folder in folder_list: |
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folder_path = Path(os.path.join(source_root, folder)) |
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if folder_path.exists() and folder_path.is_dir(): |
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target_folder = Path(destination_root) / folder_path.name |
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target_folder.mkdir(parents=True, exist_ok=True) |
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for frame_file in folder_path.glob("frame2_*.jpg"): |
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new_filename = frame_file.name.replace("frame2_", "") |
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destination_file = target_folder / new_filename |
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shutil.move(str(frame_file), str(destination_file)) |
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print(f"Moved and renamed {frame_file} to {destination_file}") |
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else: |
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print(f"Folder {folder} does not exist or is not a directory.") |
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if __name__ == "__main__": |
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parser = argparse.ArgumentParser() |
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parser.add_argument('--input', required=True, help='Path to All-Angles-Bench (root folder)') |
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args = parser.parse_args() |
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root_input = Path(args.input) |
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folder_list_file = root_input / "folder_list.txt" |
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input_path = root_input / "takes" |
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output_root = root_input / "extracted_frames_huggingface" |
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destination_root = root_input / "ego_exo4d_scenes" |
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with open(folder_list_file, 'r') as f: |
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folder_list = [line.strip() for line in f.readlines()] |
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process_subfolders(input_path, folder_list, output_root) |
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print("Processing frames extraction completed!") |
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move_and_rename_frames_from_file(folder_list_file, destination_root, output_root) |
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print("Files moved and renamed successfully!") |
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if output_root.exists() and output_root.is_dir(): |
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shutil.rmtree(output_root) |
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print(f"Removed intermediate folder: {output_root}") |
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