在视频的特定时间提取帧并插入文本OpenCV Python

import cv2
import datetime

video_path = "path/to/video.mp4"
cap = cv2.VideoCapture(video_path)

target_time = "00:01:30"  # 提取视频的1分30秒处的帧
target_time = datetime.datetime.strptime(target_time, "%H:%M:%S").time()

while cap.isOpened():
    ret, frame = cap.read()
    if not ret:
        break
    
    current_time = cap.get(cv2.CAP_PROP_POS_MSEC) / 1000  # 当前帧的时间（秒）
    current_time = datetime.datetime.fromtimestamp(current_time).time()
    
    if current_time == target_time:
        # 在帧上插入文本
        text = "Hello, World!"
        cv2.putText(frame, text, (50, 50), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 0), 2)
        
        # 显示帧
        cv2.imshow("Frame", frame)
        cv2.waitKey(0)
        break

cap.release()
cv2.destroyAllWindows()