How to insert a video to a dynamic content?

I used PHP MyAdmin to create a database catalog now I want to add a Youtube video to each item but I don't know how because is a dynamic database. So how do I make it know all video come from Youtube and how do I make to configure the register form so when I add a new item it know what video it is? Does is true when I add a new item I only insert the video code, not the entire address? How do I do that? I'm using Dreamweaver CC+PHP.

You would add a column to your database for the youtube link, then use that on the details page to display the video by placing the link inside the youtube embed code that you can get from the youtube examples.

This is the way to add a video to a static content. What I need to know is how to add a video to a dynamic catalog content. Is complete differents ways.

I guess I don't understand. If you add a column to the database it would be dynamic and not static. Maybe I'm misinterpreting what you mean by dynamic.

I was assuming you meant you were displaying a video on a product catalog details page that shows different products dynamically and each might have its own video. The instructions I gave would cover that scenario.

I meant more like this https://www.youtube.com/watch?t=595&v=TxIMO_0pIfc but the video inside a dynamic content that could be erased any moment.
The page is like this: there's the index that only have images with their title. All images could be active (showing) or not active (not showing on the index). All images have links to the rest of the information. The link opens on another page. In this page have besides other information, the Youtube video. There's the register new content only for administrator where, acording to my former teacher, you only register only the code of the video, and he also said is not like when you insert images. I didn't understand this video because the guy doesn't did everything step by step and he only used the code. I only know how to use the design mode on dreamweaver, the code is a little confuse (if you don't explainig step by step).

I'm afraid I still don't quite get what you are doing or where you are getting stuck. I think it might be appropriate to use a premier support ticket to look into this together in a screen sharing session so I can get more information and provide better assistance.

I want to know how to get here: src="http://www.youtube.com/watch?v=<?php echo ($recordsetname->getColumnVal('tablename')); ?>"
or here: <iframe width='$largura' height='$altura' src='http://www.youtube.com/embed/$link' frameborder='0' allowfullscreen></iframe><br>
$desc<hr width='500'>
So when I fill the video form I just have to write the code of the video (the parte after watch?v=)

You just store the dynamic pieces as columns in your database and then refer to them in the code... just like your first example.