How to make an AI birthday story video

Quick answer: A birthday video people watch twice is a short story with the birthday person as the hero: one adventure, thirty seconds to two minutes, a line at the end. In SceneMixer, describe them in words (hair, glasses, the favourite jumper, the dog), pick a cartoon look such as Family 3D Animation or Watercolor Storybook, write a one-line brief, and render two to four segments. Uploading their photo is a paid-plan feature that needs their consent, and a realistic photo of a real person is refused by the video's face check, so a drawn look is the route that works.

Still from “Rocket Pup”, an AI short drama generated end-to-end by SceneMixer (7 characters, 1 episode) — Sample: “Rocket Pup” — Family 3D Animation, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Brief for AI Create: A one-minute birthday story: seven-year-old Lily, curly red hair and a yellow raincoat, flies her cardboard rocket to the moon to bring back the last slice of birthday cake, with her dachshund Pip as co-pilot; ends with the whole family singing to her.

A story, not a slideshow

Who	The adventure
A seven-year-old	A rocket to the moon to rescue the cake
A grandmother at eighty	Sailing back to the harbour town where she grew up
A friend at thirty	A heist to steal the last slice
A partner	The night you met, told as a film

Describe them in words

The details people recognise are the ones you write: curly red hair, gap in the front teeth, yellow raincoat, a dachshund called Pip. They go into the character description and the sheet draws them in the project's style. Free setup images (15 per account) cover a small cast. Describe a face · The dog as a character.

The Family 3D Animation card under Visual Style in SceneMixer's project setup — The cards as they appear in step 1, *Set Up Your Project*. Pick one in each row before the script is read; the visual style is fixed once you continue.

The 3D Toy Cartoon card under Visual Style in SceneMixer's project setup — The cards as they appear in step 1, *Set Up Your Project*. Pick one in each row before the script is read; the visual style is fixed once you continue.

Photos: what works

On the current plans, uploading a photo is a membership feature. Upload only with the person's consent (for a child, a parent's). Choose Optimize into a reference sheet so the photo is redrawn in the project's style; a realistic photo of a real person is refused by the video's face check, while drawn and 3D faces are rarely flagged. Using your own photo · Real faces.

The wish at the end

Make the last shot a line someone says: @Mum (smiling): Happy birthday, Lily. Spoken lines come out right; written text in the frame does not, so put a title card on in your editor if you want one. The video carries a background score; a birthday song is something to add in your editor. Dialogue in the storyboard.

Length, cost and sending it

A one-minute story is about four 15-second segments, rendered at 10 credits a second on the default tier; there is a free 5-second preview once per account. Composite the episode, then download it or send a share link, which plays without an account. Composite and share · Share links · What is free.

Make it in SceneMixer, start to finish

Script: paste your own on Upload Script, or write the brief above in AI Create and let it draft the episodes.
Step 1: Type Film; Scene Style Pastoral Healing, American Small Town; Costume Style Soft Everyday; Visual Style Family 3D Animation, Watercolor Storybook; Target Region; dialogue language; 9:16 Portrait. Then read the script.
Step 2: the birthday person described in words (or a consented photo, optimised); family members and pets as characters; home and the adventure's place as locations. The first 15 setup images on an account are free.
Storyboard: generate episode 1 first (free on your first drama) and read it before you render anything. One place per segment.
Video: render on the default tier at 10 credits a second, fix single shots instead of whole episodes, then put the episode together and post.

Second	Shot
0–15	Lily finds the cake plate empty; a crumb trail to the window
15–30	The cardboard rocket, Pip in a helmet, lift-off
30–45	The moon, the slice on a crater, a grumpy moon mouse
45–60	Home through the window; the family, candles, the wish

FAQ

How do I make a birthday video with AI?

Write a short adventure with the birthday person as the hero, describe them in words, pick a cartoon look and render a minute or so.

Can I use their photo?

On a paid plan, with consent, optimised into a drawn sheet; realistic photos of real people are refused by the face check.

Can it say happy birthday with their name?

Yes, as a spoken line. Written text in the frame is unreliable; add it in your editor.

Can it include the Happy Birthday song?

The video has a background score; add a song in your editor.

How long should it be?

Thirty seconds to two minutes: two to eight segments.

How do I send it?

Download the composite or send a share link that plays without an account.

Which look suits a birthday video?

Family 3D Animation, 3D Toy Cartoon, Watercolor Storybook or Claymation.

Can the pet be in it?

Yes. A dog or cat is a character with its own sheet.

Happy birthday, Lily.

Start a birthday story from one sentence.

Make a birthday video

Updated October 31, 2026