# Cross-post your reels to TikTok and Shorts.

> Cross-posting sends one video to Instagram Reels, TikTok and YouTube Shorts from a single upload. Motion Reel posts your file as it is, with each platform's own settings, and shows how it went on every account.

Motion Reel (https://motionreel.app). The page: https://motionreel.app/cross-posting. Updated November 8, 2026.

## One video, three platforms.

- **One upload:** Upload the video once, then pick your accounts on each platform.
- **A real post on each:** It goes up through each platform's own publishing API, as a normal post on your account.
- **A clean copy:** Motion Reel posts the file you upload, with no watermark or logo from another app.
- **Each platform's own options:** Trial reels on Instagram, drafts on TikTok, titles and visibility on YouTube.
- **One caption:** A post has one caption across its accounts. For different words on each platform, make a post for each.
- **One failure doesn't stop the rest:** Each account has its own status, and a retry only sends to the accounts that failed.

## Where it works

- **Instagram Reels:** Goes up as a Reel, up to 15 minutes, in the grid or the Reels tab only.
- **TikTok:** Post it to your profile or send a draft, with your own choices for every post.
- **YouTube Shorts:** Goes up as a Short when it's vertical or square and up to 3 minutes.

## How it works

1. **Upload the original file.** MP4 or MOV, up to 300 MB. 1080 × 1920 (9:16) looks right everywhere.
2. **Pick your accounts.** Any mix of Instagram, TikTok and YouTube accounts you've connected.
3. **Set each platform's options.** Then post it now or choose a time.

## Questions

### What is cross-posting?

It's posting the same video to more than one platform. With Motion Reel, you upload it once and pick your Instagram, TikTok and YouTube accounts.

### Why upload the original file?

A video saved from one app often carries that app's watermark. Upload your original, and each platform gets a clean copy.

### Can each platform have a different caption?

A post has one caption across its accounts. To use different words on each platform, make a separate post for each.

### Can it go out at different times on each platform?

A post goes out at one time on all its accounts. To use different times, make a separate post for each.

### What if my video is longer than 3 minutes?

YouTube Shorts need to be up to 3 minutes, so leave YouTube out. Reels can run up to 15 minutes and TikTok up to 10, or your account's limit if it's shorter.

### Do I need an AI agent?

No. You can cross-post everything from the dashboard. If you do use one, it can work with the same things.

### Can my AI agent cross-post for me?

Yes. Connect Claude, Codex, Cursor or another MCP client to Motion Reel and ask. It shows you a preview, and nothing is scheduled until you say yes.