Reel
Also known as: Instagram Reel, Vertical short video
Quick definition
A Reel is a short-form vertical video on Instagram (typically 15-90 seconds) optimized for full-screen mobile viewing. Reels live in a dedicated tab and are heavily prioritized by Instagram's discovery algorithm, often surfacing to non-followers via the Explore page.
Contents
What is a Reel?
A Reel is Instagram's short-form vertical video format, launched in 2020 as a direct competitor to TikTok. Reels are 15 seconds to 90 seconds long, shot in 9:16 vertical aspect ratio, and play in a full-screen dedicated tab. Unlike Feed posts which prioritize your followers, Reels are aggressively pushed to non-followers via the Explore tab and the Reels feed itself, making them the highest-reach format on Instagram.
Reels can include music (Instagram's licensed library or original audio), text overlays, voice-over, AR filters, and transitions. The format intentionally mimics TikTok's design and the same content style works on both — if a piece of content performs well on TikTok, it often performs well on Reels with minimal editing.
Why Reels matter for reach
Three reasons Reels dominate Instagram's algorithm. First, Instagram weighs Reels heavily because they keep users on the app longer (longer dwell time per session). Second, the dedicated Reels feed creates a TikTok-style infinite-scroll experience that consistently surfaces non-follower content — meaning a single Reel can reach 10-100x more new viewers than a Feed post. Third, Instagram's product team is actively pushing Reels adoption against TikTok competition; the algorithm explicitly rewards accounts that publish Reels regularly with broader Feed distribution too.
Accounts that publish 3-5 Reels per week typically see 2-5x more total reach than accounts that publish only Feed posts at the same frequency.
Reel best practices
Five practices show up in nearly every high-performing Reel. (1) Hook in the first 3 seconds — text overlay, surprising visual, or strong claim; viewers decide to keep watching or scroll within those seconds. (2) Vertical 9:16 only — horizontal Reels get cropped and look amateurish. (3) Use trending audio when possible — Instagram's algorithm explicitly boosts Reels using songs currently trending on the platform. (4) Add captions or text overlays — most Reels are watched muted in public spaces; text-on-screen carries the message. (5) Keep Reels under 60 seconds for highest completion rate; longer Reels work but require stronger pacing.
Vertical short-form video by platform
| Platform | Format name + duration | Notes |
|---|---|---|
| Reel — 15-90 seconds | Dedicated tab; highest non-follower reach | |
| TikTok | TikTok video — up to 10 minutes | Same vertical 9:16 format; hosts trending audio |
| YouTube | Short — up to 60 seconds | Separate from regular YouTube uploads |
| Reel — 15-90 seconds | Cross-posts to Instagram if connected | |
| Snapchat | Spotlight — up to 60 seconds | Vertical with trending audio overlap |
| Idea Pin — up to 60 seconds | Multi-page vertical format | |
| X / Twitter | Native video — up to 2:20 or 10 min Premium | Less algorithmic boost than other platforms |
| Native video — up to 10 minutes | Vertical works but landscape preferred |
Common pitfalls
- ×Posting horizontal video as a Reel — Instagram crops it and the post looks unprofessional
- ×Skipping the first-3-second hook — viewers scroll past in under a second if the start is slow
- ×Using non-trending audio — Instagram explicitly de-prioritizes Reels without licensed music
- ×Going too long — Reels over 60 seconds drop watch-completion rate sharply
Tips
- ✓Borrow content that performed on TikTok — the 9:16 format and audience overlap make repurposing fast
- ✓Add captions / text overlays — most viewers watch muted in public spaces
- ✓Post 3-5 Reels per week — frequency matters; the algorithm rewards consistent posting
- ✓Cross-post to Facebook Reels and YouTube Shorts via the API for free additional reach
Frequently asked questions
How are Reels different from Feed posts?+
Reels are vertical short-form video pushed to non-followers via the Explore tab and dedicated Reels feed. Feed posts (single image, carousel, square video) primarily reach existing followers via the home feed. Reels reach 10-100x more new audiences but Feed posts drive deeper engagement from existing community.
Should I post the same video as both a Reel and a Feed post?+
Yes if it makes sense. Many top accounts post a vertical video as a Reel (for non-follower reach) and also as a Feed post (for follower visibility). Instagram doesn't penalize this. The same approach works for cross-posting to TikTok and YouTube Shorts simultaneously.
What length of Reel works best?+
15-30 seconds is the sweet spot for completion rate and re-watches. Reels of 7-15 seconds work for hook-driven content (a single visual moment); 30-60 seconds for tutorials or storytelling. Beyond 60 seconds, completion drops sharply and the algorithm reduces distribution.
Do I need original music for Reels?+
No — Instagram's licensed music library covers most use cases and using trending audio actively helps reach. Original audio (your own voice, branded sounds) doesn't hurt but loses the trending-audio algorithmic boost.
Can I publish Reels via the API?+
Yes. Most scheduling APIs accept a vertical 9:16 MP4 with a 'reel' post type. CodivUpload's API uses post_type: 'reel' with instagram_media_type: 'REELS' and media_urls pointing to the vertical video file.
Schedule Reels via API or dashboard
CodivUpload supports Instagram Reels with full per-platform overrides. Cross-post to TikTok + YouTube Shorts in the same call. Free plan includes 10 Reels/month.
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