Facebook Reels Video Specs: Current Requirements & Export Tips
Facebook Reels now accepts videos of any length and format, but there are still recommended specs for best results. Here’s what you need to know to export clips that fit.
| Spec | Value |
|---|---|
| Max length | No length or format restrictions since Meta's 17 Jun 2025 change ('all videos will be shared as reels on Facebook ... Reels on Facebook will also not have any length or format restrictions'); the older organic cap was 90 s. Meta's Facebook Reels ad spec likewise lists no maximum duration |
| Aspect ratio | 9:16 recommended (full-screen vertical); since June 2025 any format posts as a reel (landscape/square are accepted) |
| Resolution | 1440x2560 (9:16) recommended in Meta's Facebook Reels ad spec; 1080x1920 is the common working size |
| Max file size | 4 GB (Facebook Reels ad spec); Meta's 'Requirements for Facebook Reels' help page could not be fetched - third-party guides cite 1 GB for organic reels (unverified) |
| Frame rate | Fixed frame rate required (ad spec); organic fps range not verifiable from official pages (third parties cite 24-60 fps) |
| Formats / codecs | MP4, MOV, GIF (ad spec); H.264 compression, square pixels, progressive scan, stereo AAC >=128 kbps; no edit lists in the container |
| Captions | Facebook Reels ads: captions optional but recommended and auto-captioning is NOT supported for the ad format (Meta ads guide); the organic Reels composer offers auto-generated captions in-app (not re-verified) - burning captions in inside the safe zone is the safe default |
| Safe zones | Meta ads guide for Facebook Reels: keep ~14% of the top, ~35% of the bottom and ~6% of each side free of text/logos (approx. 269 px top / 672 px bottom / 65 px sides on 1080x1920) |
Sources: https://about.fb.com/news/2025/06/making-it-easier-create-videos-facebook/ · https://www.facebook.com/business/ads-guide/update/video/facebook-facebook-reels · https://www.facebook.com/business/help/1197310377458196. Specs change - verify in the platform's help center before a big upload.
Essential Facebook Reels Video Specs (2026)
As of June 2025, Facebook accepts any video length or format as a reel. However, Meta recommends following specific specs for optimal playback and appearance, especially for reach and ads. Refer to the table above for the current requirements.
- Aspect Ratio: 9:16 (vertical) is recommended for full-screen viewing, but landscape and square videos are accepted.
- Resolution: 1440x2560 px is recommended; 1080x1920 px is widely used and compatible.
- File Size: Up to 4 GB for ads; unverified 1 GB for organic reels (always check platform limits before large uploads).
- Frame Rate: Fixed frame rate required for ads; aim for 24-60 fps for organic posts.
- Formats: MP4, MOV, GIF with H.264 video and AAC audio.
- Captions: Optional, but strongly recommended for accessibility and engagement.
- Safe Zones: Keep text and logos away from the top 14%, bottom 35%, and 6% sides (see table for pixel guides).
How to Export Clips That Fit Facebook Reels
To ensure your video looks great on Facebook Reels:
- Export in 9:16 vertical format (1080x1920 or 1440x2560 px).
- Use MP4 with H.264 video and AAC audio for best compatibility.
- Keep your file size under 4 GB (ads) or 1 GB (organic, as a precaution).
- Set a fixed frame rate, ideally 30 fps, to avoid playback issues.
- Burn in captions within the safe zone, especially for ads (auto-captioning is not supported for Reels ads).
Using Vidulk’s AI Clipper for Facebook Reels
Vidulk’s free AI Clipper (iOS & Android) helps you quickly create Facebook Reels-ready clips from long videos, interviews, podcasts, or lectures. Paste your source video, and the AI finds the best moments, exports them as short, vertical, captioned clips, and sizes them for Facebook Reels, TikTok, or YouTube Shorts. You can adjust captions and ensure all text stays within Facebook’s safe zones before exporting.
Best Practices for Captions and Safe Zones
Always keep important text and logos away from the top 14%, bottom 35%, and 6% sides of your vertical video. This prevents overlap with Facebook’s UI and ensures clarity across devices. If you add captions manually or burn them in, double-check placement before exporting. For organic reels, Facebook’s composer may offer auto-generated captions, but for ads, you must add them yourself.
Export clips that fit these specs automatically - Vidulk reframes to 9:16, captions and trims to length. Free to start on iOS and Android.
Try VidulkFAQ
What is the recommended aspect ratio for Facebook Reels?
The recommended aspect ratio is 9:16 (vertical). Facebook now accepts all formats, but vertical videos fill the screen best.
What is the maximum length for a Facebook Reel?
As of June 2025, there is no maximum length or format restriction for Facebook Reels. Any duration is accepted.
What file size and format should I use for Facebook Reels?
For ads, keep files under 4 GB in MP4, MOV, or GIF format with H.264 video and AAC audio. For organic reels, 1 GB is a common precaution.
How do I keep captions inside Facebook Reels safe zones?
Keep captions away from the top 14%, bottom 35%, and 6% of each side of your video. This avoids UI overlap and ensures readability.
Can I use auto-captions for Facebook Reels ads?
No, auto-captioning is not supported for Reels ads. You must add or burn in captions manually for ad uploads.