如何在Python中播放有声音的视频文件并设置播放位置？

pip install opencv-python
pip install pygame

import cv2
import pygame

def play_video(video_path, position):
    # 初始化Pygame
    pygame.init()
    
    # 打开视频文件
    video = cv2.VideoCapture(video_path)
    
    # 获取视频的帧率和总帧数
    fps = video.get(cv2.CAP_PROP_FPS)
    total_frames = int(video.get(cv2.CAP_PROP_FRAME_COUNT))
    
    # 设置播放位置
    target_frame = int(total_frames * position)
    video.set(cv2.CAP_PROP_POS_FRAMES, target_frame)
    
    # 创建Pygame窗口
    pygame.display.set_caption("Video Player")
    screen = pygame.display.set_mode((640, 480))
    
    # 播放视频
    while True:
        ret, frame = video.read()
        if not ret:
            break
        
        # 将OpenCV图像转换为Pygame图像
        frame_rgb = cv2.cvtColor(frame, cv2.COLOR_BGR2RGB)
        frame_pygame = pygame.image.frombuffer(frame_rgb.tobytes(), frame_rgb.shape[:2][::-1], "RGB")
        
        # 显示图像
        screen.blit(frame_pygame, (0, 0))
        pygame.display.flip()
        
        # 检测退出事件
        for event in pygame.event.get():
            if event.type == pygame.QUIT:
                pygame.quit()
                return
    
    # 关闭视频文件
    video.release()

# 播放视频文件，并设置播放位置为50%
play_video("video.mp4", 0.5)

# 初始化Pygame
pygame.init()

# 创建Pygame窗口
pygame.display.set_caption("Video Player")
screen = pygame.display.set_mode((640, 480))

# 显示图像
screen.blit(frame_pygame, (0, 0))
pygame.display.flip()

# 检测退出事件
for event in pygame.event.get():
    if event.type == pygame.QUIT:
        pygame.quit()
        return