Automatically add small and large thumbnails from an embedded video within a post.

Activate the plugin:
Simply unzip the file and upload the folder to your wordpress plugins directory and activate it within your admin dashboard.  

Using the plugin:
Each time you add a video using the html code supplied by youtube three custom fields are added to the post, small_thumb, large_thumb and videoID.  You can display these custom fields in your theme by using the wordpress function
get_post_meta();
Example:
<img src=”<?php echo get_post_meta($post->ID, ’small_thumb’, true); ?>” alt=”<?php the_title(); ?>” />

Download Plugin