INSERSTING OR CHANGING VIDEO IN HTML5
1) To make changes in HTML5 template, you should go to site Cpanel
After that please click on file manager and then click on go button.
Then move to public.html and click on index.html file.
Please open it by any HTML editor.
To find the youtube video link you are searching for please click on cmd+F or ctrl+f and write youtube in it.
Please have a copied link of your desired youtube video by then and copy it instead of the address given.
Changes will be seen as soon as you refresh the page.
SEE VIDEO TUTORIAL HOW TO INSERT OR CHANGE VIDEO IN THE HTML5 TEMPLATE