custom_og_content.php

<?php
/* overriding og:title format for bank entry post types */
function gk_bank_entry_wpseo_og_title( $title ) {
    //only perform this action on single posts
    if ( is_singular() ) {
      //grab currently available post
      $post = get_queried_object();
      //check for match of the intended post type
      if (get_post_type($post) == 'bank_entry'){
        //append the post type to the title
        $title .= ' '.get_post_type($post);
      }
    }
    return $title;
}
add_filter( 'wpseo_opengraph_title', 'gk_bank_entry_wpseo_og_title' );

/* overriding og:description field with custom content from a custom field */
function gk_bank_entry_wpseo_opengraph_desc( $desc ) {
    //only perform this action on single posts
    if ( is_singular() ) {
      //grab currently available post
      $post = get_queried_object();
      //check for match of the intended post type
      if (get_post_type($post) == 'bank_entry'){
        //replace the description with the content of the custom field if the field has content, otherwise use the default value
        $overriding_desc = get_post_meta( $post->ID, 'bank_entry_sharing_description', true );
        if (!empty($overriding_desc) && $overriding_desc != ''){
          $desc = $overriding_desc;
        }
      }
    }

    return $desc;
}
add_filter( 'wpseo_opengraph_desc', 'gk_bank_entry_wpseo_og_desc' );

?>