Add a dynamic metafield reel video to my product page

Store Design
1

How to add a dynamic metafield video in my product page. The code below for me is not working.

{% assign reel1 = product.metafields.custom.reel1 %}

{% if reel1 %} {{ reel1 | video_tag }} {% endif %}
2

use this code

{% if reel1 != blank %}
  <iframe src="{{ reel1 }}" frameborder="0" allowfullscreen=""></iframe>
{% endif %}

and store video link in metafield

3

Hi,

The above is showing up as blank. I tried to modify it and below is showing me the video box but not playing anything.

Can you please check once.

{% assign reel1 = product.metafields.custom.reel1 %}

{% if reel1 %} {% endif %}

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