Reframe 21:9 for Threads
21:9 is wider than 9:16; expect a centre crop to fit Threads's shape. Recommended export dimensions: 1080×1920.
21:9 is wider than 9:16; expect a centre crop to fit Threads's shape.
Source: Koldflux Media Lab. Verified 2026-09-18.
Crop to 608×1080 from (656, 0). Output frame: 1080×1920.
Frequently asked
Can a 21:9 video fit Threads?
21:9 is wider than 9:16; expect a centre crop to fit Threads's shape. The platform's documented preferred shape is 9:16 (1080×1920).
Will my footage be stretched?
No. Koldflux scales the source to cover the target frame and trims the excess from the centre, so proportions are preserved.
What about burned-in captions or overlays?
Keep text and faces inside the platform safe-zone band. The preview above shows the documented overlay area for this platform.
Koldflux reframes one source recording into every ratio you publish in, automatically.
Automate this in Koldflux