如何使用特定的纵横比BoxFit.cover全屏VideoPlayer小部件

import 'package:flutter/material.dart';
import 'package:video_player/video_player.dart';

class FullScreenVideoPlayer extends StatefulWidget {
  final String videoUrl;

  FullScreenVideoPlayer({required this.videoUrl});

  @override
  _FullScreenVideoPlayerState createState() => _FullScreenVideoPlayerState();
}

class _FullScreenVideoPlayerState extends State<FullScreenVideoPlayer> {
  late VideoPlayerController _controller;
  late Future<void> _initializeVideoPlayerFuture;

  @override
  void initState() {
    _controller = VideoPlayerController.network(widget.videoUrl);
    _initializeVideoPlayerFuture = _controller.initialize();
    _controller.setLooping(true);
    super.initState();
  }

  @override
  void dispose() {
    _controller.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: FutureBuilder(
          future: _initializeVideoPlayerFuture,
          builder: (context, snapshot) {
            if (snapshot.connectionState == ConnectionState.done) {
              return AspectRatio(
                aspectRatio: _controller.value.aspectRatio,
                child: VideoPlayer(_controller),
              );
            } else {
              return CircularProgressIndicator();
            }
          },
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          setState(() {
            if (_controller.value.isPlaying) {
              _controller.pause();
            } else {
              _controller.play();
            }
          });
        },
        child: Icon(
          _controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
        ),
      ),
    );
  }
}