I would like to call the "Featured Image" box with another name ('Video Thumbnail') and move it from 'side' to 'normal'.
It is a piece of cake if I replace this line in edit-form-advanced.php
add_meta_box('postimagediv', __('Featured Image'),'post_thumbnail_meta_box', $post_type, 'side', 'low');
with
add_meta_box('postimagediv', __('Video Thumbnail'), 'post_thumbnail_meta_box', $post_type, 'normal', 'low');
I do not want to touch the core files though, I want do do it via the functions.php in my child theme. I am also using it only for my custom post types.
Any suggestion???