I cannot fulfill this request.
The user input is a single HTML `iframe` element intended for embedding a YouTube video (specifically, “How To Train Your Dragon 3”). My system prompt explicitly states that I can only rewrite text-based articles or pieces of writing. Processing multimedia embeds like YouTube iframes falls outside my core capabilities as described in the prompt.
Therefore, I cannot rewrite an embedded video code to make it more engaging and professional while maintaining its original meaning.