Ephemeral processing · files auto-delete after 2 hours
Creator-owned content only
Ephemeral processing · files auto-delete after 2 hours
Creator-owned content only
Turn a 16:9 (or mixed) landscape master into Shorts/Reels 9:16 with center crop or black letterbox — honest Fit to Aspect, not AI reframe — and know when to escalate to a Shorts or Reels pack for −11 LUFS and length.
Updated
Tools in this guide
Fit to Aspect owns landscape → 9:16 (also 1:1 and 16:9) with crop or letterbox. Shorts and Reels packs own canvas plus ≈ −11 LUFS plus length. Run Platform Readiness first if you are unsure which rows fail.
For most talking-head and centered B-roll masters, set target aspect 9:16 and Fit mode to center crop. Preview mentally: left/right edges disappear. If the subject sits off-center, letterbox or re-frame in CapCut before packing — RepostClip does not AI-reframe faces.
After a canvas-only pass, if the clip is still quiet for swipe feeds or longer than Shorts/Reels limits, run Shorts Upload Pack or Reels / TikTok Pack. Specs for 1080×1920, LUFS, and length sit on vertical export settings for Shorts, Reels & TikTok.
Finish creative edits in CapCut. Export a high-quality master under 50 MB. Use Fit to Aspect here for the publish canvas, or a pack when loudness and duration must move with it. CapCut export vs upload-ready packs explains the handoff boundary.
FAQ
Open Fit to Aspect, set 9:16, and choose center crop (fill the frame; edges may cut) or black letterbox (keep the full picture with bars). One-tap 9:16 crop is available in the workspace. This is center crop/letterbox — not AI subject tracking.
Center crop when faces and hooks sit near the middle and you want a full-bleed vertical frame. Letterbox when cutting edges would lose critical action or text. Blur-pad Vertical Video Converter is a third path when you want soft fill instead of black bars.
Escalate to Shorts or Reels/TikTok pack when you also need ≈ −11 LUFS and a hard 15–90s length trim in one pass. Fit to Aspect only owns the canvas job.
No. Rotate / Fix Orientation corrects 90/180/270 rotation. Landscape-to-9:16 reframes an upright wide master into a vertical canvas.
Keep reading
Open Fit to Aspect (crop / letterbox) and run the steps from this guide.
