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Cross-post your reels to TikTok and Shorts.

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Instagram Reels, TikTok and YouTube Shorts

Example: asking an AI agent to schedule a reel to Instagram, TikTok and YouTube Shorts, seeing it on the week's calendar and live on each platform, a comment getting its guide by DM, then the month's results.
An AI agent scheduling a reel with Motion Reel

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.

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.

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.

Where it works.

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

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.

Often used with.

AI agentsConnect Claude, Codex or Cursor to Motion Reel's MCP server.Comment-to-DMEveryone who comments your keyword gets your link in their DMs.Reel schedulerUpload a video once and schedule it to Instagram, TikTok and YouTube Shorts.Content calendarEvery reel, TikTok and Short you've scheduled, on one calendar.
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Updated November 8, 2026. Also in Markdown at /cross-posting.md.