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