On a Twentyeleven child theme's functions.php file I attempted to add video post format support using:
add_theme_support('post-formats', array( 'aside', 'chat', 'gallery', 'image', 'link', 'quote', 'status', 'video', 'audio'));
...adding the 'video' format to the array. But it would not work until I deleted the function in the parent theme. Obviously, when the theme is updated and functions.php is overwritten, I will lose the change.
Whats the best way to avoid this and add support to my child theme?