Extending Assets with oEmbed video references
Craft gives you the ability to combine different type of content in one single field, the matrix field. Configure one matrix block type for your images and one for your video links.

This setup still allows you to re-order your content (the matrix blocks) using drag &amp; drop. You can further extend your entries with other types of content (maps, quotes, etc.) and have better accessibility to any fields assigned to your images and videos (not hidden behind double click).