CLClipLint

1080×1920, and a 90 second API

Facebook Reels size

Export Facebook Reels at 1080×1920. The publishing API's minimum vertical frame is 540×960, which is small enough to look soft on a phone, so ClipLint warns below 1080×1920 and only warns (not fails) below 540×960.

The June 2025 change removed the organic length cap. If you are posting through the Page API, stay inside 3–90 seconds. File size was not published in a source the rules file is willing to treat as a limit.

Drop a clip

MP4, MOV, WebM, or a thumbnail. Duration, resolution, aspect, fps, codec, and file size are read here. Nothing is uploaded.

What to do with it

  • 9:16, MP4, H.264 or HEVC or VP9 or AV1, AAC-LC, 24–60 fps.
  • 30 fps is the practical choice. 24 passes Facebook and fails Instagram.
  • A landscape master should be cropped, not uploaded as-is, if you want the Reel player.
  • Pair this page with the safe zone page before you burn captions into the lower third.

Facebook Reels specs

As of June 2025 Meta treats Facebook video as Reels and dropped the organic length cap. The Page API is still 3–90 seconds.

CheckValueIf missedConfidenceVerifiedSource
Page API length90 s (API)warnCited2026-10-19Facebook Reels Publishing API
API minimum length3 swarnCited2026-10-19Facebook Reels Publishing API
Recommended aspect9:16warnCited2026-10-19Facebook Reels Publishing API
API minimum frame540×960warnCited2026-10-19Facebook Reels Publishing API
Recommended frame1080×1920warnCited2026-10-19Sprout Social video specs guide
Minimum frame rate24 fpswarnCited2026-10-19Sprout Social video specs guide
Maximum frame rate60 fpswarnCited2026-10-19Sprout Social video specs guide
Video codecH.264, HEVC, VP9, AV1warnCited2026-10-19Sprout Social video specs guide
Audio codecAAC-LCwarnCited2026-10-19Sprout Social video specs guide
ContainerMP4warnCited2026-10-19Facebook Reels Publishing API

Official safe zone, 1080×1920

269 top / 672 bottom / 65 left / 65 right

Assumed identical to Instagram Reels (14% / 35% / 6% / 6%) because Meta's Reels ads guidance uses one safe zone for both apps. Not confirmed for the Facebook organic player. See also https://sproutsocial.com/insights/social-media-video-specs-guide.

Cited · 2026-10-19 · Meta newsroom — Facebook video, June 2025

Measured safe zone, 1080×1920

No separate measured margin is stored for this platform.

Questions

What is the Facebook Reels resolution?

1080×1920 recommended. 540×960 is the API minimum cited for vertical video. Verified 19 October 2026.

What is the max length?

No organic limit since June 2025. The Page API is 90 seconds. The checker warns past 90 seconds.

What frame rate?

24 to 60 fps in the sources used here. 30 fps is what you should export.