|
|
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" |
|
|
) |
