AI Animated Explainer Generator

I need a streamlined way to turn any written script into a polished animated explainer video, complete with a natural-sounding voiceover narration. My ideal workflow is fully AI-driven: I drop in the text, choose a style template that matches my brand, and receive a 1080p file ready for upload.

Here’s what matters most to me:
• Clean, modern 2D or motion-graphic animation generated automatically.
• A built-in text-to-speech engine (or an easy hook to one) so the voiceover is produced and timed correctly with each scene.
• Simple controls for colour palette, logo placement and call-to-action slides; background music and text overlays are nice-to-have options I may add later.

I’m open to whatever stack makes this reliable—Python, Node, FFmpeg, After Effects scripting, Stable Diffusion, Runway, Synthesia, or an all-in-one SaaS wrapper—as long as the end result is a repeatable process I can run without touching keyframes by hand.

Deliverables
1. Source code or workflow files with clear installation notes.
2. One sample video generated from a script I supply, showcasing the voice-synced animation.
3. A brief user guide so I can swap scripts and render new videos on my own.

If this sounds feasible, let me know what tools you’d leverage and roughly how long it would take to get a proof of concept working.