How to record video in xamarin forms without using plugins?

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Xamarin

I want to create own camera custom controls (I need to add my own buttons for recording) for video recording in Xamarin forms?. How do I achieve this without using any media plugin?

What I have tried:

I am able to take a photo using camera(without using media plugin) but not able to add one more extra button for taking video and do coding accordingly.
My Code for Take a photo is-

void SetupEventHandlers()
        {
            takePhotoButton = view.FindViewById<global::Android.Widget.Button>(Resource.Id.takePhotoButton);
            takePhotoButton.Click += TakePhotoButtonTapped;
}

async void TakePhotoButtonTapped(object sender, EventArgs e)
        {
            camera.StopPreview();

            var image = textureView.Bitmap;

            try
            {
                var absolutePath = Android.OS.Environment.GetExternalStoragePublicDirectory(Android.OS.Environment.DirectoryDcim).AbsolutePath;
                var folderPath = absolutePath + "/Camera";
                var filePath = System.IO.Path.Combine(folderPath, string.Format("photo_{0}.jpg", Guid.NewGuid()));

                var fileStream = new FileStream(filePath, FileMode.Create);
                await image.CompressAsync(Bitmap.CompressFormat.Jpeg, 50, fileStream);
                fileStream.Close();
                image.Recycle();

                var intent = new Android.Content.Intent(Android.Content.Intent.ActionMediaScannerScanFile);
                var file = new Java.IO.File(filePath);
                var uri = Android.Net.Uri.FromFile(file);
                intent.SetData(uri);
                MainActivity.Instance.SendBroadcast(intent);
            }
            catch (Exception ex)
            {
                System.Diagnostics.Debug.WriteLine(@"				", ex.Message);
            }

            camera.StartPreview();
        }