Group 2d array data by a column and create new parent columns and subarrays for each group

I am trying to restructure a 2-level array data into a 3-level array by grouping on a column (video_category). Per each group, two columns should exist on the 2nd level (assigned new keys), to identify the group, and all original columns should be pushed as child rows of the parent group (in the 3rd level).

Input:

$array = [
    [
        'video_id' => 14,
        'video_title' => 'test1',
        'video_category_name' => 'Beginner',
        'video_category' => 1
    ],
    [
        'video_id' => 18,
        'video_title' => 'test',
        'video_category' => 1,
        'video_category_name' => 'Beginner'
    ],
    [
        'video_id' => 17,
        'video_title' => 'first',
        'video_category' => 3,
        'video_category_name' => 'Mobility'
    ],
    [
        'video_id' => 19,
        'video_title' => 'second',
        'video_category' => 3,
        'video_category_name' => 'Mobility'
    ]
];

Desired result:

[
    [
        'ctg_name' => 'Beginner',
        'cat_id' => 1,
        'data' => [
            [
                'video_id' => 14,
                'video_title' => 'test1',
                'video_category_name' => 'Beginner',
                'video_category' => 1,
            ],
            [
                'video_id' => 18,
                'video_title' => 'test',
                'video_category' => 1,
                'video_category_name' => 'Beginner',
            ],
        ],
    ],
    [
        'ctg_name' => 'Mobility',
        'cat_id' => 3,
        'data' => [
            [
                'video_id' => 17,
                'video_title' => 'first',
                'video_category' => 3,
                'video_category_name' => 'Mobility',
            ],
            [
                'video_id' => 19,
                'video_title' => 'second',
                'video_category' => 3,
                'video_category_name' => 'Mobility',
            ],
        ],
    ]
]

I'd tried the following, but it is not creating the parent level columns as desired.

foreach ($video as $val) {
    $result[$val['video_category']][] = $val;
}

try this code

<?php
$arr = array(
    0 => array
    (
        'video_id' => 14,
        'video_title' => 'test1',
        'video_category_name' => 'Beginner',
        'video_category' => 1
    ),
    1 => array
    (
        'video_id' => 18,
        'video_title' => 'test',
        'video_category' => 1,
        'video_category_name' => 'Beginner'
    ),
    2 => array
    (
        'video_id' => 17,
        'video_title' => 'first',
        'video_category' => 3,
        'video_category_name' => 'Mobility'
    ),
    3 => array
    (
        'video_id' => 19,
        'video_title' => 'second',
        'video_category' => 3,
        'video_category_name' => 'Mobility'
    )
);
echo "<pre>";
$newArr = array();
foreach($arr as $k=>$v){
    $newArr[$v['video_category_name']]['ctg_name']=$v['video_category_name'];
    $newArr[$v['video_category_name']]['cat_id']=$v['video_category'];
    $newArr[$v['video_category_name']]['data'][]=$v;
}
$newArr1 = array();
foreach($newArr as $k=>$v){
   $newArr1[] = $v;
}
print_r($newArr);
?>

Output

Array
(
    [Beginner] => Array
        (
            [ctg_name] => Beginner
            [cat_id] => 1
            [data] => Array
                (
                    [0] => Array
                        (
                            [video_id] => 14
                            [video_title] => test1
                            [video_category_name] => Beginner
                            [video_category] => 1
                        )

                    [1] => Array
                        (
                            [video_id] => 18
                            [video_title] => test
                            [video_category] => 1
                            [video_category_name] => Beginner
                        )

                )

        )

    [Mobility] => Array
        (
            [ctg_name] => Mobility
            [cat_id] => 3
            [data] => Array
                (
                    [0] => Array
                        (
                            [video_id] => 17
                            [video_title] => first
                            [video_category] => 3
                            [video_category_name] => Mobility
                        )

                    [1] => Array
                        (
                            [video_id] => 19
                            [video_title] => second
                            [video_category] => 3
                            [video_category_name] => Mobility
                        )

                )

        )

)