Can A Shortcode Get HTML/Text From Content And Return It Twice With Added HTML?

I’m trying to cut down on some work for myself and I was hoping someone might know if this is possible.

These are images setup in a slider that shows a text overlay on the image on the next slide in a multi-page post.

Here’s what I’m trying to do. Take this:

<h2>Image Title</h2>
<img src="http">
text for slide

And output them like this:

<div class="singe_slide">
<h2>Image Title</h2>
<img src="http">
</div>
<!--nextpage-->
<div class="singe_slide">
<h2>Image Title</h2>  //Same Image Next Page
<img src="http">
<div class="slide_caption"><div class="captExt">
text for slide
</div></div>
<!--nextpage-->

This is what I’m currently using for my shortcodes but it takes just as long to just manually add the div’s and it’s very messy. It looks like this:

[Slide]<h2>Image Title</h2>
<img src="http">[/Slide]
<!--nextpage-->
[Slide]<h2>Image Title</h2> //Same Image Next Page
<img src="http">
[SlideCap]text for slide[/SlideCap][/Slide]
<!--nextpage-->

And these are my 2 shortcodes:

function Slide($atts, $content = null) {
    $content = wpautop(trim($content));
    return '<div class="singe_slide">' . do_shortcode($content) . '</div>';
}
add_shortcode('Slide', 'Slide');

function SlideCap($atts, $content = null) {
    $content = wpautop(trim($content));
   return '<div class="slide_caption"><div class="captExt">' . do_shortcode($content) . '</div></div>';
}
add_shortcode('SlideCap', 'SlideCap');

I’m open to suggestions on an easier way to do this. This is my very first shortcode so I’m new to it.

Is it possible to get something between shortcodes as a variable?
[shortcode]This Part Here[/shortcode]