if you’ve set the return value to return an array or object, you can access those values like so:
$video = get_field('video');
$video_url = $video['url'];
$video_thumbnail_url = $video['thumbnail'];
$image = get_field('image');
$image_url = $image['url'];
$image = $image['id'];
You can always view the entire object/array by using var_dump($image);