ACF Repeater in Dynamic Dropdown

I’m getting a bit lost with this and my code is probably completely wrong but I have the following

Add this to Contact Form 7:
[dynamic_select dynamic_select-815 "source:filter"]

And then this in my functions.php file, where:

artist_video – ACF Repeater field name
artist_video_title – ACF Sub field name (text type)
artist_video_id – ACF Sub field name (text type)

All that is happening on output is:

<select id="" name="dynamic_select-815" class="wpcf7-form-control cf7sg-dynamic-dropdown wpcf7-dynamic_select">
<option value="choices">Array</option>
</select>

add_filter( 'cf7sg_dynamic_dropdown_custom_options','dynamic_select_815_dynamic_options',10,3);
function dynamic_select_815_dynamic_options($options, $name, $cf7_key){
  $data['choices'] = array();
  
  if( have_rows('artist_video') ) {
          
          // while has rows
          while( have_rows('artist_video') ) {
              
              // instantiate row
              the_row();
              
              // vars
              $value = get_sub_field('artist_video_title');
              $label = get_sub_field('artist_video_id');
  
              // append to choices
              $options['choices'][ $value ] = $label;
              
          }
          
      }
  
  foreach($data as $label=>$value){
    $options['choices'][ $value ] = $label;
  }
  return $options;
}

Any ideas or help would be much appreciated.