Can you repost TikToks to Shorts and Reels?

The short version

One video on three platforms is the standard way to grow. The video travels fine. The music often does not, because music you add inside an app is licensed for that app.

Music added inside TikTok

Commercial Sounds. The terms leave no room. "You may only post or share videos that include Commercial Sounds within TikTok." Posting on "third party digital platforms" is on the list of uses that are not permitted.

General Sounds. TikTok's Music Terms grant nothing outside TikTok. They say only that "If you do share your TikTok video to a third-party platform, your TikTok video would be subject to the terms and conditions of that third-party platform." In practice that means the other platform's matching system judges the song as if you had edited it in yourself.

Music added inside YouTube

Songs from the Shorts sound picker are licensed through YouTube for Shorts. Download that Short and post it elsewhere and the licence stays behind.

It works the same in the other direction. YouTube Help says a Short "created outside of YouTube's creation tools" with copyright-protected content "may get a Content ID claim or be removed". If the Short is longer than one minute, an active claim blocks it worldwide.

Watermarks

TikTok is explicit. Its guidelines make ineligible for the For You feed any "reused or unoriginal content posted without creative edits, such as clips that show someone else's watermark or logo." The Originality Policy adds that such content is ineligible for the Creator Rewards Program.

Instagram's position could not be read from its own pages when this guide was checked, so it is not stated here. Meta's Edits app does advertise exports "with no added watermarks", which tells you which way Meta expects creators to work.

The catch

The habit that breaks things is saving the finished video from one app and uploading that file to the next. It carries the first app's watermark and the first app's music.

How to cross-post without trouble

1. Edit in an editor outside all three apps, and keep a clean master file with no logo.
2. Use music you license yourself and whose licence names every platform you post on. Music licences for Instagram and TikTok compares them.
3. Connect each account to the licence where the provider offers it. Epidemic Sound, for example, safelists one account per platform on its Creator plan.
4. Or upload the master with no music, and add a sound inside each app. Each platform then licenses its own copy.
5. On TikTok, keep outside music to a minute or less. TikTok's terms generally permit up to one minute, and Artlist warns that longer use of outside music can be muted even when licensed.