Gumroad creators are killing it with digital products, but killer promo videos are the missing piece for more sales. Manually editing them? Total pain. Enter CapCut (2025 update) with its insane AI tools for quick edits, effects, and auto-generation, paired with Fish Audio for spot-on voiceovers and cloning. This guide walks you through starting your own agency: crank out promo videos on retainer, help creators boost conversions, and cash in on the Gumroad boom.

Redbubble artists and print-on-demand sellers need eye-catching promotional videos to showcase designs on products like t-shirts, mugs, and stickers — but creating them manually is slow and costly. This creates a scalable agency opportunity: combine LOVO (for hyper-realistic, emotional AI voiceovers in 100+ languages) with InVideo (for fast text-to-video generation, templates, and editing). This guide shows how to launch a “Done-for-You AI Promo Video Agency,” delivering batches of product showcase videos for Redbubble creators and brands on retainer, capitalizing on 2026's AI-driven POD marketing boom.