video_player pub包中的VideoPlayer是有状态的，特别是因为VideoPlayerController。但是，您可以将其 Package 在StatefulWidget中，以便在StatelessWidget中使用。例如，在无状态小部件中使用以下 Package 器：

class VideoPlayerWrapper extends StatefulWidget {
  final String videoUri;

  const VideoPlayerWrapper({Key? key, required this.videoUri}) : super(key: key);

  @override
  _VideoPlayerWrapperState createState() => _VideoPlayerWrapperState(videoUri);
}

class _VideoPlayerWrapperState extends State<VideoPlayerWrapper> {
  late VideoPlayerController _controller;
  final String videoUri;

  _VideoPlayerWrapperState(this.videoUri);

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.network(videoUri)
      ..initialize().then((_) {
        // Ensure the first frame is shown after the video is initialized, even before the play button has been pressed.
        setState(() {});
      });
    _controller.play();
  }

  @override
  Widget build(BuildContext context) {
    return Center(
          child: _controller.value.isInitialized
              ? AspectRatio(
            aspectRatio: _controller.value.aspectRatio,
            child: VideoPlayer(_controller),
          )
              : Container(),
    );
  }

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