orientation and key for video

main.dart

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

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  // This widget is the root of your application.
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(
          seedColor: Colors.blue,
        ),
      ),
      home: const HomePage(),
    );
  }
}

class HomePage extends StatefulWidget {
  const HomePage({super.key});

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  late VideoPlayerController _controller;
  UniqueKey videoKey = UniqueKey();

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.networkUrl(
        Uri.parse(
          'https://flutter.github.io/assets-for-api-docs/assets/videos/bee.mp4',
        ),
      )
      ..initialize().then((_) {
        // Ensure the first frame is shown after the video is initialized, even before the play button has been pressed.
        setState(() {});
      });
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor:
            Theme.of(context).colorScheme.inversePrimary,
        title: Text('Home Page'),
      ),
      body: OrientationBuilder(
        builder: (context, orientation) {
          return Center(
            child:
                orientation == Orientation.portrait
                    ? _controller.value.isInitialized
                        ? AspectRatio(
                          aspectRatio:
                              _controller.value.aspectRatio,
                          child: VideoPlayer(
                            _controller,
                            key: videoKey,
                          ),
                        )
                        : Text('not initialized')
                    : _controller.value.isInitialized
                    ? AspectRatio(
                      aspectRatio: _controller.value.aspectRatio,
                      child: VideoPlayer(
                        _controller,
                        key: videoKey,
                      ),
                    )
                    : Text('not initialized'),
          );
        },
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          setState(() {
            _controller.value.isPlaying
                ? _controller.pause()
                : _controller.play();
          });
        },
        child: Icon(
          _controller.value.isPlaying
              ? Icons.pause
              : Icons.play_arrow,
        ),
      ),
    );
  }
}