随机选择一个单独的可克隆行

Question

I would like to diplay a set of clonable rows within my template in a random order. There are several videos and only one should be displayed (randomly selected).

At the moment I have to following code:

<?php if( have_rows('video_clonable') ) {
                    $count = 0;

                    while( $count < 1 && have_rows('video_clonable') ) {

                        // increment row
                        the_row();


                        // vars
                        $video = get_sub_field('video');
                        $hintergrundbild = get_sub_field('hintergrundbild');
                ?>
                        <?php if( $video ): ?>
                         <video muted autoplay>
                              <source src="<?php echo $video['url'] ?>" type="video/mp4">
                              Your browser does not support the video tag.
                         </video> 
                        <?php endif; ?>

                <?php   
                $count++;
                }

                }

?>

But this code always gets the first row of this while loop. Now I want it to select a row randomly.

Can you help me to transform my function so this can work? Thank you very much for any suggestions and help!

Lukas