the video is not a link from an outside source such as the Youtube. The actual video had been uploaded here at Shopify, and a video code is needed in order to display it at the post.
I am not sure if this would affect the site speed or the loading speed. Alternatively, I could embed the YouTube link here and be able to play it directly. Anyhow, I'm still getting to know this site,trying to familiarise myself with the navigation, and testing out different features to determine the most suitable items for this photography website.