Output Video Download Link in template

First get the ACF plugin output the video file URL properly. The field has to be set to “Text”. Once the get_field(“video”); displays the video file URL, you can use it in the link href attribute.

$video = get_field( "video_file_url");

<a href="https://wordpress.stackexchange.com/questions/224444/<?php echo $video; ?>"> Download </a>

I hope this helps.