What aspect ratio should I use for Shorts, Reels, and TikTok?

Use 9:16 for a full-screen vertical composition. Review platform-safe areas before publishing because each app places interface controls over different parts of the frame.

Should face tracking move the crop continuously?

Clipperz handles reframing natively. For a stable talking-head shot, the output should stay visually calm and only make meaningful composition changes around real scene or speaker-layout changes.

Do I need a blurred background behind a horizontal video?

Not when the source can be cropped cleanly to fill 9:16 while keeping the subject visible. A duplicated background is a fallback style, not a requirement.

How do I check that the face stays in frame?

Choose 9:16, let Clipperz create the reframed clip, then review the editor preview and scrub the finished file at the start, middle, end, and every scene cut.

Convert Horizontal Video to Vertical 9:16

Clipperz performs the reframe natively

You do not need to draw a crop box or create framing keyframes. Choose 9:16 before processing and Clipperz prepares the portrait composition as part of clip creation, using the source layout and visible subjects to keep the useful action in frame.

The creator's job is review: open the generated clip in the editor, watch the full vertical preview, and export only after the face, captions, and scene changes look right. For a stable talking-head shot, the resulting frame should remain visually calm rather than chasing tiny movements.

Select 9:16 in Clipperz before clip creation.
Let the native reframe prepare the portrait composition.
Review the entire generated clip, not only its poster frame.
Export only after captions and framing pass together.

Add the horizontal source

Paste a supported source URL or choose Upload file for a creator-owned MP4, MOV, MKV, or WEBM. Clipperz validates the source before opening clip configuration.

Confirm that the intended recording and brand are selected. Source resolution is detected automatically and appears in the configuration summary.

Native Clipperz Clip Studio with URL source and Upload file controls — Start with the native source intake; Clipperz accepts a supported URL or a creator-owned upload.

Choose 9:16 output

In Configure your clips, select 9:16 under Output Aspect Ratio. It is the native preset for Shorts, Reels, and TikTok and is the default for short-form video.

This is the instruction to the rendering pipeline. You are choosing the intended output, not manually positioning a crop rectangle.

Native Clipperz Output Aspect Ratio control with 9:16 selected — Select 9:16 once; the native pipeline uses that target when it creates each clip.

Start clipping and let Clipperz reframe

Confirm the clip settings and start creation. Clipperz finds candidate moments, applies the selected vertical target, and prepares editor-ready clips without asking you to keyframe the face.

The reframe is computed from the actual selected content. It can account for camera cuts or layout changes while keeping stable shots visually stable.

Review the native vertical preview

Open a generated clip in the editor and play it from beginning to end. Check the start, middle, end, and every real camera or speaker-layout change.

A good result shows one coherent, filled video, keeps the relevant face comfortably visible, and avoids distracting motion during a stable answer.

Clipperz editor showing the native 9:16 preview with a human speaker visible — Review the generated 9:16 clip in the editor; there is no manual crop-building step.

Check captions and platform-safe space

Open Caption in the editor and preview the vertical composition with captions enabled. Confirm that the reframe does not push the face behind captions and that important source text remains visible.

Leave room for the destination platform’s interface. A composition can look balanced in a clean editor and still feel crowded once playback controls, descriptions, or action buttons appear.

Native Clipperz Caption Style controls used while reviewing a vertical clip — Use the native caption panel, then judge captions and reframe together in the editor preview.

Export and verify the frame throughout the clip

Open the finished vertical file and scrub through the full duration. Check the face at the start, middle, end, and immediately after every scene cut.

A successful result keeps the main subject visible, fills the canvas, avoids a distracting duplicated background, and changes framing only when the source structure makes that change useful.

Finished vertical clip preview used to verify stable face-centered framing — Scrub the rendered clip—not only a poster frame—to confirm the native composition stays comfortable across the selected shot.

Stable vertical framing checklist

Judge the result as a viewer would: at normal speed on a phone-sized frame. Detection accuracy matters only when it produces a comfortable composition.

The face is fully visible and not tight against either edge.
The vertical canvas is filled by one coherent video.
The composition does not drift during a stable shot.
Scene-aligned changes feel intentional.
Captions and important source text remain readable.

How to convert horizontal video to vertical without losing the face