What is BigMotion

BigMotion is an AI app that runs short-video channels for you. You choose a niche once, and BigMotion keeps writing, narrating, illustrating and posting new vertical videos to TikTok, Instagram and YouTube, every month, without you lifting a finger.

You use BigMotion in your browser at app.bigmotion.ai. Sign in with an email code, a password or your Google account.

What you can do

Series

A Series is the heart of BigMotion. It’s an automatic video channel on one niche: fun facts, bedtime stories, motivational stories, or anything you describe in your own words.

Every video in a Series is new. For each one, BigMotion writes a fresh script, narrates it in the voice you picked, creates the pictures in your visual style, adds music and captions, and can animate the scenes. The look and sound stay the same across the Series, so your channel feels consistent. Read more in Series.

Cartoons

A Cartoon is a single animated video made from a story you write yourself. It keeps your plot, your characters and your ending. It’s made once and isn’t part of a Series. See Cartoons.

Auto-posting

Connect your TikTok, Instagram and YouTube accounts once, and finished videos are posted there for you. See Auto-posting.

Animation and Sparks

Videos can be a slideshow of illustrations, or they can move. Animation is paid with Sparks, a separate balance on your account. See Animation and Sparks.

AI assistants

You can connect an AI assistant such as ChatGPT, Claude or Cursor to your account and ask it to check your plan, start a Series or make a Cartoon. See MCP server.

How a plan works

Your plan gives you a number of Series and a fixed number of videos per month for each Series. Together that’s your Videos per Month:

Videos per Month = videos per Series × number of Series

So a plan with 2 Series makes twice as many videos as the same plan with 1 Series. You don’t choose how many videos a Series makes; your plan decides. Want more? Add another Series or move to a bigger plan. See Plans and billing.

Where things are in the app

• New Series: start a new Series.
• Your Videos (on mobile, Your Series): all your Series, how many you’re using (for example “1/2 Series Active”), and every video they made.
• Cartoons: your Cartoons and the button to make a new one.
• Account: your plan, Sparks, connected social accounts and connected AI assistants.

What happens after you start

1. You set up a Series in a few steps: niche, voice, music, visual style, captions, posting, details and animation.
2. The first video starts generating right away and is usually ready in about 5 minutes.
3. The rest of the month’s videos are spread evenly across the month.
4. Each finished video appears in the app, where you can watch and download it, and is posted to the accounts you turned on.
5. Next month the Series carries on by itself, as long as your plan is active.

Ready? Head to Create a Series.