Video not fitting inside container at all in Flutter

I am exhausted at this point. I have tried every possible solution available online and on stackOverflow to resolve this issue.

So basically I have a video that am tryingto fit inside a container but instead its sitting on container like as if being stacked onto it. I have tried using FittedBox to ConstrainedBox to Chewiebut nothing working.

lt me show how it looks like:

and when the screen size is reduced:

My code:

    // ignore_for_file: prefer_const_constructors

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

import 'components/constants.dart';

class Practice extends StatefulWidget {

  static const id = 'practice.dart';
  const Practice({super.key});

  @override
  State<Practice> createState() => _PracticeState();
}

class _PracticeState extends State<Practice> {

  late VideoPlayerController _videoMainController;
  late Future<void> _initializeMainVideoPlayerFuture;

  @override
  void initState() {
    //main video
    _videoMainController = VideoPlayerController.asset('assets/videos/vid6.mp4');
    _initializeMainVideoPlayerFuture = _videoMainController.initialize();
    _videoMainController.setLooping(true);
    _videoMainController.setVolume(0.0);
    _videoMainController.play();

    super.initState();
  }

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

  @override
  Widget build(BuildContext context) {

    final double screenWidth = MediaQuery.of(context).size.width;
    final double screenHeight = MediaQuery.of(context).size.height;

    return Scaffold(
      appBar: AppBar(
        title: const Text('V I D E O'),
        backgroundColor: Colors.deepPurple,
        centerTitle: true,
      ),
      backgroundColor: Colors.deepPurpleAccent[100],
      body: Container(
          width: 848,
          height: 480,
          decoration: BoxDecoration(
            border: Border.all(color: Colors.yellow, width: 4),
            borderRadius: BorderRadius.circular(20),
          ),
          child: AspectRatio(
              aspectRatio: _videoMainController.value.aspectRatio,
              child: VideoPlayer(_videoMainController))),
    );
  }
}

Adding complete code so its easier for you to try and test what can work.

You can wrap the video player in a ClipRRect widget to add rounded corners to your video. To scale the video dynamically along with the screen width while keeping the aspect ratio, use the following width and height for your video container:

@override
  Widget build(BuildContext context) {
    double containerMargin = 16.0; //space between edge of screen and video
    double aspectRatio = _videoMainController.value.aspectRatio;
    double dynamicWidth = MediaQuery.of(context).size.width - containerMargin * 2;
    double dynamicHeight = dynamicWidth / aspectRatio;

    return Scaffold(
      appBar: AppBar(
        title: const Text('V I D E O'),
        backgroundColor: Colors.deepPurple,
        centerTitle: true,
      ),
      backgroundColor: Colors.deepPurpleAccent[100],
      body: Container(
        width: dynamicWidth,
        height: dynamicHeight,
        margin: EdgeInsets.all(containerMargin),
        decoration: BoxDecoration(
          border: Border.all(color: Colors.yellow, width: 4),
          borderRadius: BorderRadius.circular(20),
        ),
        child: ClipRRect(
          borderRadius: BorderRadius.circular(16), //20 minus yellow border width
          child: AspectRatio(
            aspectRatio: aspectRatio,
            child: FittedBox(
              fit: BoxFit.cover, // Set BoxFit to cover the entire container
              child: SizedBox(
                width: _videoMainController.value.size.width,
                height: _videoMainController.value.size.height,
                child: VideoPlayer(_videoMainController),
              ),
            ),
          ),
        ),
      ),
    );
  }