Assigning the same custom meta box to multiple post types

I currently have videos set up as a custom post type and I have also created a custom meta box for it that allows users to enter the ID of either a youtube/vimeo video – the video is then displayed on the front end.

I want to re-use this meta box for another custom post type. How would I do this?

The function for the current meta box is:

// Create the Video Information Meta Box by hooking into the admin menu for a post
    add_action('admin_menu', 'video_add_box');


    function video_add_box(){
    add_meta_box('video_information', 'Video Information', 'video_information', 'videos', 'normal', 'high');
    }

    //function to populate the meta box added above
    function video_information(){
    global $post;

    // Noncename needed to verify where the data originated
    echo '<input type="hidden" name="video_noncename" id="video_noncename" value="' .
    wp_create_nonce( plugin_basename(__FILE__) ) . '" />';

    //adds the custom field _youtubeID plus some other stuff
    $youtubeID = get_post_meta($post->ID, '_youtubeID', true);
    if ( empty($youtubeID) ) {
    $youtubeID = '';
    }

    //adds the custom field _vimeoID
    $vimeoID = get_post_meta($post->ID, '_vimeoID', true);
    if ( empty($vimeoID) ) {
    $vimeoID = '';
    }

    //add the box
    echo '<br />';
    echo '<strong>Youtube ID:</strong>  <input type="text" name="_youtubeID" value="' . $youtubeID  . '" size="20" maxlength="30" />';
    echo '<br />';
    echo '<strong>Vimeo ID:</strong>  <input type="text" name="_vimeoID" value="' . $vimeoID  . '" size="20" maxlength="30" />';
    echo '<br />';
    } //end video_information function

    //save_video_meta is called below with the action "save_post" and saves your IDs to the post
    function save_video_meta($post_id, $post) {
    // verify this came from the our screen and with proper authorization,
    // because save_post can be triggered at other times

    if ( !wp_verify_nonce( $_POST['video_noncename'], plugin_basename(__FILE__) )) {
    return $post->ID;
    }

    // Is the user allowed to edit the post or page?

    if ( !current_user_can( 'edit_post', $post->ID )){
    return $post->ID;
    }

    $video_meta['_youtubeID'] = $_POST['_youtubeID'];
    $video_meta['_vimeoID'] = $_POST['_vimeoID'];
    foreach ($video_meta as $key => $value) { // Cycle through the $video_meta array
    if( $post->post_type == 'revision' ) return; // Don't store custom data twice

    $value = implode(',', (array)$value); // If $value is an array, make it a CSV

    if($value) {
    update_post_meta($post_id, $key, $value);
} else 
    delete_post_meta($post_id, $key); // Delete if blank
}
    } //end save_video_meta

    //save the video custom fields
    add_action( 'save_post', 'my_save_postdata' );
function my_save_postdata($post_id){
    $video_meta['_youtubeID'] = $_POST['_youtubeID'];
    $video_meta['_vimeoID'] = $_POST['_vimeoID'];
    foreach ($video_meta as $key => $value) { // Cycle through the $video_meta array
        if(  $_POST['post_type'] == 'revision' ) return; // Don't store custom data twice
        $value = implode(',', (array)$value); // If $value is an array, make it a CSV

        if(get_post_meta($post_id, $key, FALSE)) { // If the custom field already has a value
            update_post_meta($post_id, $key, $value);
        } else { // If the custom field doesn't have a value
            add_post_meta($post_id, $key, $value);
        }
        if(!$value) delete_post_meta($post_id, $key); // Delete if blank
    }//endforeach video meta
 }

Solutions Collecting From Web of "Assigning the same custom meta box to multiple post types"

Yes, you need to edit your video_add_box() function in order to make an array with the post type you need to show that box.

$postypes = array('type1', 'type2', 'type3');
foreach ( $postypes as $postype) {

    add_meta_box(
        'video_information',
        'Video Information',
        'video_information',
        $postype
    );
}

You can read more in codex: http://codex.wordpress.org/Function_Reference/add_meta_box

add_action( 'add_meta_boxes', 'my_add_custom_box' );

function my_add_custom_box($postType) {
    $types = array('type1', 'type2', 'type3');
    if(in_array($postType, $types)){
        add_meta_box(
                'myid',
                __( 'Title', 'myplugin_textdomain' ),
                'callback',
                $postType
        );
    }
}

Source : http://wordpress.org/ideas/topic/add-meta-box-to-multiple-post-types