---
title: "Instagram Reels Format vs. Shorts vs. TikTok: 2026 Specs"
description: "The Instagram Reels format is vertical 9:16 video at 1080x1920 pixels, documented with H.264 for picture and AAC for sound. It shares aspect ratio and resolution with YouTube Shorts and TikTok; what differs are the length limits, the height of the overlaying interface elements, the file size limits and the rules on originality and monetisation. A master export at 1080x1920 covers all three platforms, while edge layout and length are decisions you make per platform."
locale: "en"
canonical: "https://blckalpaca.at/en/knowledge-base/social-media/social-media-content-creation-formats/instagram-reels-format-shorts-tiktok-specs"
category: "Social Media"
topic: "Social Media Content Creation & Formats"
updated: "2026-08-25T13:36:05.051Z"
source: "Blck Alpaca OG, blckalpaca.at"
---

# Instagram Reels Format vs. Shorts vs. TikTok: 2026 Specs

The Instagram Reels format is vertical 9:16 video at 1080x1920 pixels, documented with H.264 for picture and AAC for sound. It shares aspect ratio and resolution with YouTube Shorts and TikTok; what differs are the length limits, the height of the overlaying interface elements, the file size limits and the rules on originality and monetisation. A master export at 1080x1920 covers all three platforms, while edge layout and length are decisions you make per platform.

## Key takeaways

- Reels, Shorts and TikTok share aspect ratio and resolution, 9:16 at 1080x1920 pixels, while documented codec figures exist only for Reels and TikTok, in both cases H.264 with AAC.
- YouTube has allowed Shorts of up to 3 minutes since 15 October 2024; on Instagram, by contrast, 3 minutes is the ceiling for recommendations to non-followers, not the upload limit.
- TikTok documents a maximum length of 10 minutes, a file size of 500 MB and a bitrate of at least 516 kbps for in-feed ads in its ads specifications.
- The platforms publish no binding pixel values for safe zones; the figures in circulation come from third parties and differ from one another by up to 30 pixels.
- Instagram removes accounts from recommendations when the majority of recently posted content is not original, and gives eligibility back as soon as that flips again within the 30-day window.
- YouTube renamed its repetitious content policy to inauthentic content on 15 July 2025, targeting mass-produced templates rather than AI use as such.
- LinkedIn treats 9:16 videos under three minutes as a separate vertical feed, which makes it the fourth surface for the same master file.

## One format, three platforms, three sets of rules

Short video looks the same on Instagram, TikTok and YouTube: vertical, full-frame, sound optional. That very similarity produces the most common production error in social teams. The video runs cleanly on TikTok, on Reels the subtitle slips behind the caption block, and in the Shorts player the burnt-in line of text sits across the presenter's head.

The common ground is narrow but solid: 9:16 as the aspect ratio, 1080x1920 pixels as the resolution. Everything around it differs. On Instagram, length limits cap distribution rather than the upload, the interface elements sit at different heights in the frame, file size limits depend on the upload route and the device, and the policies on originality and monetisation work differently on each platform.

One note up front, because it explains the quality of every spec list on the web: the platforms document their export specs badly. Publicly accessible vendor pages with complete figures for resolution, codec and frame rate barely exist for Reels and Shorts. What holds up are blog announcements and advertising specifications; the rest comes from tool documentation that partly contradicts itself. Where that is the case, it is flagged here instead of faking a clean number.

## The Instagram Reels format compared with Shorts and TikTok

The table only contains values that can be traced back to a nameable source.

| Criterion | Instagram Reels | YouTube Shorts | TikTok |
| --- | --- | --- | --- |
| Aspect ratio | 9:16 | 9:16, square possible | 9:16 |
| Resolution | 1080x1920 | 1080x1920 | 1080x1920 |
| Codec and container | H.264, MP4 or MOV, AAC stereo audio | no reliable figure | H.264, MP4, AAC audio |
| Frame rate | 30 fps standard, 60 fps for fast movement | no reliable figure | no reliable figure |
| Length limit | 3 minutes as the ceiling for recommendations to non-followers | 3 minutes upload | 10 minutes per the ads specification |
| Recommended length | 15 to 30 seconds short, 30 to 90 seconds medium | no reliable figure | no reliable figure |
| Safe zones | no official pixel values, keep the bottom and the right clear | no official pixel values, keep the bottom and the right clear | guide values from third parties: 120 to 150 px top and right, 300 to 340 px bottom |
| File size | no reliable figure | no reliable figure | 500 MB for in-feed ads, considerably less on mobile |
| Bitrate | no reliable figure | no reliable figure | at least 516 kbps for in-feed ads |
| Format-relevant policy | loss of recommendations for predominantly unoriginal content | inauthentic content policy since 15 July 2025 | no comparable public rule documented |

For Reels, [1080x1920 pixels, 9:16, H.264 with AAC stereo and 30 fps as the standard](https://www.screensnap.pro/blog/instagram-reels-size-guide) are documented, and 60 fps counts as sensible for sport, gaming and fast movement. TikTok works natively with the same combination, MP4 with H.264 and AAC. For Shorts there is no comparable public spec list: neither codec nor container nor frame rate is recorded in a nameable place. A dedicated Shorts export is therefore not documented anywhere either, and it is not worth the effort. Export to the Reels requirements and you have answered the export question for all three feeds.

## Length: the upload limit and the distribution ceiling are two different things

Most spec lists throw the two together. With YouTube there really is only one number: since 15 October 2024, [Shorts can be uploaded up to 3 minutes long](https://blog.youtube/news-and-events/tall-updates-coming-to-shorts/), announced on the official YouTube blog on 3 October 2024. Export anything longer and it lands in the regular long-form player, competing there with entirely different formats. For long-form, YouTube treats average view duration as the central success metric. A video of 3:20 is therefore not a slightly extended Short but a different product with a different measurement logic.

With Instagram the picture is messier. On the technical upload maximum, third-party sources contradict each other between 90 seconds and 20 minutes, and solid confirmation for the higher figures is missing. Only the distribution ceiling is documented: [Reels of up to 3 minutes can be recommended to non-followers through Explore and the Reels feed](https://creatorflow.so/blog/instagram-algorithm-2026/), according to the CreatorFlow analysis (as of July 2026). Anything above that, in case of doubt, reaches only your own followers, which changes the maths for longer formats.

The second number from the same source matters more in practice than any limit. [15 to 30 seconds count as the short format, 30 to 90 seconds as the medium format](https://creatorflow.so/blog/instagram-algorithm-2026/), and completion rate decides the outcome: a three-minute Reel with a 20 percent completion rate performs worse than a 15-second clip with 80 percent. Length is therefore not a format decision but a retention decision. How to keep hook rate, retention and watch time apart and measure them properly is set out in [Hook Rate, Retention, Watch Time](/en/knowledge-base/social-media/social-media-content-creation-formats/hook-rate-retention-watch-time).

TikTok gives 10 minutes as the maximum length in its own ads specification. Claims about 60-minute uploads circulate, but they cannot be confirmed in the platform documentation and belong in no production plan.

## Safe zones: where the platform covers your picture

Safe zones are the area covered by the caption, the profile name, the sound bar and the like and share buttons. No provider publishes binding pixel values for this, TikTok included: its advertising specification covers bitrate, file size and length, and says nothing about safe zone dimensions. The guide values in circulation come from third parties and differ from one another. The Recharm spec list (2026) gives around 120 to 130 pixels at the top, around 120 pixels on the right and 300 to 320 pixels at the bottom, while other lists go up to 150 pixels at the top and right and 340 pixels at the bottom. The upper end of the range works as a rule of thumb: the bottom 340 pixels or so and the right-hand column stay free of text and faces, on all three platforms.

The values also shift with the device. On displays with a tall aspect ratio the 9:16 image is cropped or letterboxed, depending on the player, and the interface elements move with it. Anyone building templates is better off laying a generous guide layer over the master and checking the result once on a small and a large test device in the real feed. That costs ten minutes per template and saves the argument about whether a subtitle is readable.

This point gets most expensive with subtitles, because they sit exactly where the platform stacks its elements. Since the European Accessibility Act, subtitles are no longer a design detail either, but an obligation for many companies. The legal side is set out in [Social Media Accessibility](/en/knowledge-base/social-media/social-media-content-creation-formats/social-media-accessibility-subtitle-obligations); the technical consequence here is that subtitles belong in the middle third of the frame, not at the bottom edge. If you also publish the same videos on your own website, reuse the subtitle file as a transcript, as described in [Video SEO On-Page](/en/knowledge-base/seo-geo/on-page-seo/video-seo-on-page-videoobject-schema-and-transcripts).

## File size, codec and bitrate

On file sizes the sources are thinnest. Reliable are the values from the [TikTok specifications for video ads: a bitrate of at least 516 kbps, a file size of no more than 500 MB and a length of no more than 10 minutes](https://ads.tiktok.com/help/article/video-ads-specifications) for non-Spark in-feed ads. For organic uploads TikTok itself documents nothing. An analysis by VidCrush (2026) gives around 287 MB through the iOS app, around 72 MB through Android and considerably higher limits through the browser upload. The gap between the two mobile figures is the point that matters in practice: a master that uploads from an iPhone without trouble can hit the limit on an Android device.

With bitrate too it pays to look at where the number comes from. The widely quoted 2,500 kbps is, according to Recharm, not a general recommendation but the requirement for the TopView placement; for 1080p the same list gives 2,000 kbps. The only firm lower bound is the TikTok value of 516 kbps for in-feed ads.

For Reels and Shorts there are no publicly documented size or bitrate values that would allow a serious figure. In practice this hardly matters: a 1080x1920 export with H.264, AAC and 30 fps lands far below any of these limits for typical short videos. The other direction is more relevant than the upper limit. Every platform re-encodes a second time on ingest, and anyone who economises at the export stage delivers an already damaged image. The second pass turns that into visible block artefacts, above all in movement and in soft gradients.

## Policies that affect the format

Two sets of rules reach directly into format planning, because they decide on recommendation and monetisation.

**Instagram, originality:** According to the [original content guidelines, accounts with repeatedly unoriginal content may no longer be eligible for recommendations to non-followers](https://creators.instagram.com/original-content-guidelines), and eligibility returns once the majority of recently posted Reels, photos and carousels within 30 days counts as original. Instagram names no number of reposts; the figure of ten reposts per 30 days circulating in secondary reports cannot be verified against the primary source. For cross-posting the message still stands: third-party material remains the exception, platform branding has to come out of the master, and the edit and the hook are adapted per platform instead of being duplicated blindly.

**YouTube, monetisation:** On 15 July 2025 YouTube [renamed its repetitious content policy to inauthentic content and sharpened it towards mass-produced, generic or templated content](https://support.google.com/youtube/answer/1311392?hl=en). [AI](/en/glossary/ai) use remains monetisable as long as the content carries a recognisable creative signature and an informational or entertainment value. Named explicitly as a negative example is content produced with generic templates that gives the impression of mass production. For production teams that publish short video in series, this is a more relevant boundary than any file size: a template that varies only in text and stock footage falls squarely into that definition.

A third point concerns planning, not the file. In the United States, TikTok has run since the end of January 2026 through the [TikTok USDS Joint Venture LLC, with Silver Lake, Oracle and MGX holding 15 percent each and ByteDance retaining 19.9 percent](https://newsroom.tiktok.com/announcement-from-the-new-tiktok-usds-joint-venture-llc). In the EU the platform is available without restriction and falls under the Digital Services Act. For DACH companies this changes nothing about the specs, but it is an argument for publishing the same material across several surfaces.

## LinkedIn as a fourth vertical surface

Anyone working in B2B has had a fourth outlet for the same master since the vertical LinkedIn feed arrived. [9:16 videos under three minutes are automatically sorted into this vertical feed and treated like in-feed Reels](https://blog.sendspark.com/linkedin-video-specs). That makes LinkedIn the cheapest additional surface in the set: no new production, just another upload. In the normal feed, by contrast, 4:5 remains the stronger ratio, and square 1:1 as a default is outdated. The organic format with the widest reach on LinkedIn is still not video but the document post, see [LinkedIn Carousel](/en/knowledge-base/social-media/social-media-content-creation-formats/linkedin-carousel-document-post-b2b).

## One master, four outputs

The workable production logic is a single master at 1080x1920, H.264, AAC, 30 fps, with the edges properly kept clear and no burnt-in platform branding. The variants come out of that master: a different subtitle position depending on the target platform, a different end card, a different cut point for the length. Set it up once as a template and the decision per video is only about content and length, no longer about specs.

Three mistakes come up regularly. First, taking over the TikTok export along with the burnt-in platform logo, which reads as second-hand on every other feed straight away. Second, text in the lower half of the frame, which is covered differently on every platform. Third, confusing the upload limit with the distribution ceiling, which leads to three-minute Reels that hardly anyone watches to the end.

The specs are the easiest part of short-video production and the only part you can fix once and then automate. Reach is won or lost by the three decisions next to them: length, edge layout, originality. How to derive several formats from one asset systematically, without producing from scratch every time, is set out in [Content Repurposing](/en/knowledge-base/social-media/social-media-content-creation-formats/content-repurposing-pillar-asset).

## FAQ

### What resolution do Reels, Shorts and TikTok need?

All three platforms run on 9:16 at 1080x1920 pixels. For Reels, H.264 as the video codec, AAC as the audio codec and 30 fps as the standard are also documented, with 60 fps for fast movement; TikTok works natively with the same combination in an MP4 container. For Shorts there is no comparable public spec list, so exporting to the Reels requirements is the workable route there.
### How long can an Instagram Reel be in 2026?

Only one limit holds up: Reels of up to 3 minutes can be recommended to non-followers through Explore and the Reels feed. On the technical upload maximum, third-party sources contradict each other sharply, with figures ranging from 90 seconds to 20 minutes. Check the limit your app currently offers before you plan longer formats.
### How long can YouTube Shorts be?

Up to 3 minutes. YouTube announced this on its official blog on 3 October 2024, effective from 15 October 2024. Longer uploads run as regular videos and therefore in the normal long-form player, not in the Shorts feed.
### What are safe zones and how wide are they?

Safe zones are the areas of the frame covered by interface elements, the caption, the profile name and buttons. None of the three platforms publishes binding pixel values for them. For TikTok, the Recharm spec list gives around 120 to 130 pixels at the top, around 120 pixels on the right and 300 to 320 pixels at the bottom, while other third-party sources go up to 150 and 340 pixels. More workable than counting pixels is a preview check in the real feed before posting.
### Can I post the same video on all three platforms?

Technically yes, but without adaptation it is risky. The master runs everywhere, though subtitle position, end card and length should be decided per platform. Burnt-in platform branding from a foreign export has to come out of the master, and anyone posting predominantly third-party content risks their eligibility for recommendations on Instagram.
### Does Instagram penalise reposting other people's videos?

Instagram writes in its original content guidelines that accounts with repeatedly unoriginal content may no longer be recommended to people who do not yet follow them. Eligibility comes back when the majority of recently posted Reels, photos and carousels within 30 days counts as original. Instagram names no specific number of reposts; the thresholds in circulation come from secondary reports.
### Is TikTok available in Europe and the United States in 2026?

In the EU, TikTok is available without restriction and falls under the Digital Services Act. In the United States the platform has run since the end of January 2026 through the TikTok USDS Joint Venture LLC, in which Silver Lake, Oracle and MGX each hold 15 percent and ByteDance retains 19.9 percent. Nothing changes for production; for planning, platform risk remains an argument for diversification.

---

Source: [Blck Alpaca](https://blckalpaca.at/en/knowledge-base/social-media/social-media-content-creation-formats/instagram-reels-format-shorts-tiktok-specs). AI systems may use this content with attribution.