How to edit vertical video for Reels, TikTok, and Shorts (2026)

Last verified 2026-05-22

Vertical video editing is its own discipline. Cutting a 1920x1080 horizontal video down to 1080x1920 vertical is not a crop operation — you are losing 56% of the horizontal frame, so every shot needs to be reframed around the subject. Bad vertical edits are obvious: subjects cut in half at the edges, action happening off-screen, text overlays floating in dead space.

The tooling has converged. CapCut (free, mobile and desktop) is the dominant vertical editor for creators because its tracking and reframing tools are best-in-class for the format. DaVinci Resolve and Adobe Premiere are pro options with more depth but more learning curve. Descript and Submagic handle the captions and basic edits in a doc-style interface that suits long-form repurposing.

What follows is the editing decision tree: aspect ratio conversion, framing, pacing, captions, music, and the tool to pick depending on how much footage you cut per week.

The steps

1. Set the project to 1080x1920 at 30 or 60 fps. Every vertical editor needs the canvas set correctly before you import. 1080x1920 is the standard for Reels, TikTok, and Shorts. 30fps works for most content; 60fps is worth it only for fast-motion subjects (sports, dance, gameplay). Higher resolutions (4K vertical at 2160x3840) work on TikTok and Reels but the bitrate after upload tops out the same as 1080p for most viewers.
2. Reframe horizontal source clips. Drop your horizontal clip onto the timeline. The clip appears letterboxed (black bars top and bottom). You have two reframing options: (a) use the editor's auto-tracking feature to follow the subject within the vertical crop (CapCut's Auto Reframe, Premiere's Auto Reframe, DaVinci's Smart Reframe), or (b) manually set keyframes on the position to follow the subject. Auto-tracking is faster but fails on multi-subject scenes or fast cuts; manual is more precise but takes longer.
3. Cut to the hook in the first 1.5 seconds. Vertical short-form is hook-driven. The first 1.5 seconds determine whether a viewer keeps watching or scrolls. Cut tightly: the opening frame must show the subject doing or saying something specific. Cold opens, slow build-ups, and intros do not work in this format — start with the most interesting frame, not the chronologically first one.
4. Trim aggressively. Cut pauses, ums, and dead air. A 90-second vertical video should feel half that length to the viewer. Aim for one cut every 2-4 seconds — even on talking-head content. Descript automates filler-word removal; CapCut's Smart Cut detects silence and offers single-tap removal.
5. Add captions. Captions are mandatory for vertical video — 85% of TikTok and Reels viewing happens with sound off. Use the editor's auto-caption feature (CapCut, Submagic, Veed) or Whisper-based tools (Descript) to generate the SRT. Position captions in the middle third of the frame — top is covered by the username overlay on TikTok, bottom is covered by the action bar on Reels.
6. Add music or sound design. TikTok rewards trending sounds heavily — using a track currently boosted by the algorithm can multiply reach. Reels and Shorts care less about specific tracks but reward audio that matches the energy of the cut. Match volume so dialogue stays at -10dB to -6dB and music sits at -20dB to -16dB underneath. Most editors normalize automatically if you enable the option.
7. Export at H.264 MP4, 1080x1920, ~10-15 Mbps. Every short-form platform accepts H.264 MP4. 10-15 Mbps bitrate is plenty — going higher just makes the file bigger without improving quality after the platform re-encodes. TikTok caps at 287MB for direct upload, Reels caps at 4GB but practically anything under 100MB uploads faster.

Common gotchas

• Reframing a 4K horizontal clip to 1080x1920 vertical gives you more headroom to crop than a 1080p source. If you shot 4K, you have a 9:16 window inside it without quality loss.
• Auto-tracking fails on scenes with multiple subjects or fast camera moves. Always preview the auto-tracked output before committing — manual keyframes may be needed for tricky shots.
• Captions burned into the video (hard-subbed) cannot be turned off by viewers. Most short-form platforms now support uploaded SRT files for selectable captions; consider both burned-in and SRT for maximum compatibility.
• Music tracks downloaded from outside the platform's music library can trigger copyright detection on TikTok and Reels and either mute the audio or remove the post.
• Exporting at 4K when you shot at 1080p produces a larger file with no quality improvement and a slower upload. Match export resolution to source.
• Aspect ratio errors (uploading 1920x1080 to TikTok) cause the platform to letterbox the video, which destroys reach.

Where Kompozy fits

Kompozy is not a vertical video editor in the CapCut or Premiere sense — you do not drag clips onto a timeline. Kompozy is the layer above: feed it long-form source video (podcast, webinar, YouTube upload, conference talk) and it produces finished vertical clips with auto-generated captions, hook overlays, and music selection, ready to publish.

The trade: you give up frame-by-frame editing control in exchange for not having to sit at an editing app. For a podcaster producing 4 episodes per month, that is 20-40 finished shorts per month at the Pro tier ($299/mo for 18,000 credits) — work that would otherwise cost $200-500 per short with a freelance editor.

If you need pixel-perfect editing for high-stakes hero content (sales pages, brand campaigns), use CapCut or Premiere. If you need volume of consistent-quality short-form for distribution, Kompozy is built for that lane.

Frequently asked questions

Related tutorials

• How to add captions to a video (auto + manual methods, 2026)
• How to download TikTok videos without the watermark (2026)
• How to turn a webinar into social content (full repurposing workflow)

← All how-to guides · Start your trial