yoast video seo plugin cannot see video's

PS: i tried to add this extra code to the functions.php but it didn’t help
/**
* Takes the youtube video ID stored in a custom field and adds a full Youtube URL to the content to allow
* the video SEO plugin to index it.
*
* The video URL is added to the top of content to make it override other video’s in the post.
*
* @param string $content the input content field.
* @param array $vid the video array for the post.
*
* @return string $content
*/
function fix_content_input( $content, $vid ) {
$slides = avia_post_meta($vid[‘post_id’], ‘slideshow’);
$video = ”;
if(!empty($slides[0]))
{
foreach($slides as $slide)
{
if(!empty($slide[‘slideshow_video’])) $video .= ‘ ‘ . $slide[‘slideshow_video’];
}
}
$content = “n” . $video . “n” . $content;

return $content;
}
add_filter( ‘wpseo_video_index_content’, ‘fix_content_input’, 10, 2 );

Hi Elliott,

Thanks for your reply.
It does work when i use the default editor.
But i prefer to use the advanced editor..
Do you have a solution?