How to post the same video on TikTok, Instagram and Shorts

You filmed one good video. Posting it on TikTok, Instagram Reels and YouTube Shorts, and on your Facebook Page if you have one, is a sensible way to reach more people without filming three times. The networks are fine with that, as long as the video is yours and each app can tell. Here's how to do it well, based on each network's own rules as of October 2026.

Can you post the same video on TikTok and Instagram?

Yes. The networks' originality rules are mainly aimed at reposting other people's work. Here's what each one says:

• Instagram says content is original when it's created by the same account that posts it. Its original content guidelines give a reel you recorded of yourself as the example.
• Facebook works the same way. Meta says content filmed or produced by the owner of a Profile or Page counts as original.
• TikTok's community guidelines ask you to post only content you created or have the right to share, and keep reused material with nothing new added out of the For You feed.
• YouTube's reused content policy is part of its rules for earning money on YouTube. It targets channels that repurpose content from YouTube or elsewhere online without adding real value, and it lists content that mainly features the uploading creator as fine to monetize.

So the real question isn't whether you may post the same video in several places. It's whether each app can tell the video is yours.

Start from the clean original file

This is the step that matters most. TikTok's help center says videos saved from TikTok may include the TikTok watermark and the creator's username. Upload a copy like that to another app, or bring another app's branded copy to TikTok, and you run into these rules:

• Instagram says it aims to make watermarked reels less visible, along with low-resolution reels and reels that have already been posted on Instagram. That's from Instagram ranking explained, its official guide to how ranking works.
• TikTok lists reused clips that show someone else's watermark or logo as not eligible for the For You feed, so a clip carrying another app's logo works against you there too.
• YouTube says that if it can't clearly tell that you made the content, monetization may be removed from your entire channel. That matters if you earn money from YouTube or plan to.

To keep a clean file:

1. Edit in your phone's gallery or an editing app, and save the finished video to your phone before you post it anywhere.
2. If you edit inside TikTok, save the draft to your device before you post. TikTok says drafts are saved without a watermark by default. If you added a TikTok sound, read the music section below first.
3. Don't screen-record a posted video. It lowers the quality, and low-resolution reels are on Instagram's less-visible list too.
4. Post each video to Instagram once. Reels already posted on Instagram are on the same less-visible list.

Length and shape in each app

The three apps set different limits. These are the official numbers as of October 2026:

So one vertical cut of 3 minutes or less is the simple choice. It fits YouTube's Shorts limit, Instagram can still recommend it to people who don't follow you, and it's well inside TikTok's limits. If your video runs longer, make a shorter cut for Shorts and Reels. To check before you film, paste your script into the free video script timer.

For sizes and file limits, see our guides to TikTok video size, Instagram Reels size and YouTube Shorts length. Before you post, check each app's preview so its buttons and caption don't cover your on-screen text. The free safe zone checker shows the published safe zones on a frame of your video; choose Both for the area that's clear on Instagram, Facebook and YouTube.

Write captions, titles and covers for each app

Copying one caption everywhere is the most common shortcut, and the easiest to fix:

• TikTok: use the words people would search for. TikTok's Creator Academy suggests checking which search queries led viewers to your posts and using those words in captions for related videos.
• Instagram: keep hashtags to five or fewer. Instagram's help center says you can use up to 5 hashtags on a post, so trim a long TikTok hashtag list.
• YouTube Shorts: give each Short a real title. YouTube titles can be up to 100 characters and descriptions up to 5,000. YouTube's reviewers look at titles and descriptions, among other things, to understand how you made your content.
• Facebook Page: post it as a Reel or a feed video, with a caption written for the people who follow your Page.

Covers matter too, because they're what people see on your profile grid. On Instagram, the recommended cover size is 420 by 654 pixels, and Instagram's help center says you can't edit the cover after you upload, so choose it before you post.

Music: add it in each app

Music is where reposting goes wrong most often. A sound you add inside TikTok, Instagram or YouTube is added in that app; it isn't part of the original file on your phone. And the licenses don't travel with the video:

• TikTok's Commercial Music Library terms say videos with those sounds may only be shared within TikTok. Posting them on other platforms needs separate permission from the rights holders.
• Instagram's audio library holds copyrighted music it offers in Reels. If you upload a video that contains licensed audio, Instagram may detect it and credit the song, and tracks can be muted if its agreements with rights holders change.
• YouTube asks that if you upload a short video you created elsewhere, any copyright-protected material in it is approved for use on YouTube. Otherwise you could get a Content ID claim, or a copyright strike if the owner sends a takedown notice.

The simple fix: export your master file with only audio you own, such as your voice or your own music, or with no music at all. Then add a TikTok sound in TikTok, a song from Instagram's library on Instagram, and only music you have the rights to on YouTube.

Space your posts out

You don't have to post everywhere at the same minute. Spacing posts a few hours or a day apart has practical upsides:

• You can reply to early comments on each app while the video is new.
• You can use what the first post taught you, such as a stronger hook, a clearer cover or a sharper caption, on the next one.
• You can post in each app when your audience there is most active, which isn't always the same hour.

A simple order is to post first where your audience is biggest, then on the other apps later that day or the next.

How Unisenda helps

Unisenda is built for this job: one upload, a separate version for each app, and one place to schedule them.

1. Upload the video once to the Media library (MP4, MOV or WebM, up to 500 MB).
2. Click Create post, add the video and select your accounts, for example TikTok, an Instagram professional account, a YouTube channel and a Facebook Page.
3. Write the shared caption in All networks, then open each account's tab to give it its own caption, title, format and settings.
4. Check the previews, including the phone preview for vertical video. Unisenda flags what a network would reject before you schedule, such as a missing YouTube title or a TikTok setting you still have to choose.
5. Pick a date and time in Schedule for and click Schedule, or click Post now or Save draft.

What each tab holds:

• Instagram: choose Reel, pick a Cover (a frame or an uploaded image) and, if you want music, search Instagram's licensed music library or trending songs, preview them and set the song and video volume.
• TikTok: pick a Cover and choose TikTok's settings: who can view, comments, Duet and Stitch, commercial content disclosure and TikTok's music usage confirmation.
• YouTube: add a title of up to 100 characters, a description, visibility, audience (made for kids or not) and the altered or synthetic content label if it applies.
• Facebook Page: choose a Reel or a feed video. Reels sent through Unisenda can be 3 to 90 seconds long, so a longer cut goes to your Page as a feed video.

Behind the scenes, your original file is sent without compression where the network accepts it. Phone videos in MOV or HEVC get an H.264 MP4 copy automatically. Instagram and Threads don't accept videos wider than 1,920 pixels from other apps, so Unisenda makes a sharp 1080p copy for them. Your originals stay in your library.

After posting, you see a clear result for every account, with a link to the live post. If one account fails, you can retry just that one, and one disconnected account doesn't stop the others. To space your posts out, create a second post from the same video in your Media library and give it a later time.

Two honest limits: Unisenda only adds music to Instagram Reels, so on TikTok, YouTube and Facebook the audio in your file is what gets posted. And Unisenda doesn't show analytics, so you'll compare results in each app. You can try the whole flow with sample accounts in the Unisenda demo, where nothing is ever published, or see the plans.