Runbo Li

Runbo Li

CEO of Magic Hour

Runbo Li is the Co-founder and CEO of Magic Hour, where he builds AI video and image tools for content creation. He is a Y Combinator W24 founder and former Data Scientist at Meta, where he worked on 0-1 consumer social products in New Product Experimentation. He writes about AI video generation, AI image creation, creative workflows, and creator tools.

Latest articles

Editorial illustration of a ceramic character moving through a dance sequence; not a product output comparison
Videos
4 best AI motion control tools for character animation
· 5 min read
Teachers Beat Astronauts editorial comparison cover
Trends
Teachers beat astronauts 4 to 1 in AI video prompts
· 3 min read
Dragons Beat Unicorns editorial comparison cover
Trends
Dragons beat unicorns 7 to 1 in Magic Hour AI video prompts
· 4 min read
Birds Beat Cats and Dogs editorial comparison cover
Trends
Birds beat cats and dogs in Magic Hour AI video prompts
· 4 min read
Remove.bg alternatives: coral pitcher and leaf against interchangeable background panels, with browser tools and APIs title.
Images
7 best Remove.bg alternatives: free tools and API migration
· 7 min read
Product-video shot concepts: an amber bottle, a white shoe, and a cream jar
Videos
AI product video prompts: 8 shots for product photos
· 5 min read
Free AI Subtitles With No Sign-Up
Guides
How to add subtitles to a video with AI for free
· 4 min read
How AI Can Change, Remove, and Restyle Video
Guides
How to edit a video with AI using text prompts (2026)
· 4 min read
Cut-paper flipbook illustration comparing Viggle AI character animation alternatives
App Picks
7 Viggle AI alternatives for character animation (2026)
· 11 min read
MH
Guides
AI character replacement for video ad localization
· 5 min read
Tools to Replace Characters in Videos
App Picks
6 AI character replacement tools for video (2026)
· 8 min read
Replace an Actor Without Reshooting
Guides
How to replace an actor in a video without reshooting
· 4 min read
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