Show field twice in node page
You can do this in UI, UI and code mixed, code only and in html:

Display Suite

Install the module Display Suite and configure this in UI.

Extra Field

Use the hook hook_entity_extra_field() to get an extra field in Manage Display. You need hook_ENTITY_TYPE_view() to copy the data (in this case the file) into the new field.

Clone field in code

See
How to display a field twice in a view mode?

The last has the least overhead, but is not customizable and you have to define the field settings yourself. If you configure the second field temporarily in UI and export the view mode to yaml this helps to find the settings you need in code.

Place link html in template

Or if you want a quick solution in the template and you only need a simple formatted file link you can get the file url from the node and put it in html markup:

&lt;a href="{{ file_url(node.field_video.entity.uri.value) }}"&gt;Example Video&lt;/a&gt;