Hi @marselzalma,
Magento allows you to add html on description field (you can past html or you can use the WYSIWYG editor).
I guess that layout (includes videos and playlist navigation) is a little bit more advanced (maybe) you in that case you probably need to add a csutom block with the custom phtml to handle that kind of complexity (is not complex by it self by normally you'll get onlye text so starting from there, what you want, could be seen as complex).
