How to edit YouTube Shorts: the built-in editor, other apps, and talking-head Shorts

To edit a YouTube Short in the YouTube app, tap Create, upload a vertical or square video, drag the trim bar to set the start and end, then tap Next to add text, filters and music. That covers a quick Short. For cuts in the middle, several clips, captions or precise pacing, edit in a separate app first and upload the finished video. If the Short is you talking to the camera, a transcript editor is the fastest way to cut it.

What counts as a Short in 2026

YouTube treats a video as a Short when it is up to three minutes long and has a square or vertical aspect ratio (YouTube Help). Videos uploaded on or after December 8, 2025 that meet both conditions are classified as Shorts automatically; if you want a short video to stay a regular video, give it a wider ratio such as 16:9 (YouTube Help).

Practical specs for editing:

• Aspect ratio: 9:16 vertical is the standard. Record vertically so you do not have to crop.
• Length: up to 3 minutes. Most talking-head Shorts work best well under that.
• Resolution: export at what you recorded, typically 1080×1920 or 4K vertical.

How to edit a Short in the YouTube app

YouTube’s steps for uploading and editing on a phone (YouTube Help):

1. In the YouTube app, tap Create and choose to upload a video.
2. Select a square or vertical video.
3. Videos up to three minutes open in a trim editor: drag the sides of the bar to set the start and end. Anything outside the box is not in the Short. For longer videos, tap Edit into a Short to trim to three minutes or less.
4. Tap Next to open the editor and add text, filters, music or other audio. Audio from YouTube’s library is limited to 15-second clips.
5. Tap Next again, add a title of up to 100 characters, set privacy and audience, and upload.

The built-in editor is fine for a single clip that needs trimming, a text overlay and a sound. It is not built for detailed editing: there is no easy way to remove several sections from the middle of a talking take or to control pauses.

Better YouTube Shorts editors

When the built-in editor is not enough, edit elsewhere and upload the finished file.

App	Platforms	Good for
YouTube Create	Phone	YouTube’s own free editor with trimming, automatic captions, voiceover, effects, transitions and royalty-free music (Android Central)
CapCut	Phone, desktop, web	Templates, captions, effects; paid tier for premium features (CapCut)
Adobe Premiere (mobile)	iPhone, Android	A free multi-track editor, 4K export, no watermark (Tech Advisor)
InShot, VN	Phone	Quick timeline edits
slicecut	iPhone, Android	Cutting talking-head Shorts by editing the transcript

YouTube announced at Made on YouTube in September 2026 a Gemini-powered assistant for Shorts and YouTube Create that edits from chat instructions, such as trimming pauses or adding text; it is planned for early 2027 (Let’s Data Science).

Editing talking-head Shorts

Most Shorts that build an audience for a person are talking heads: one point, said clearly, in under a minute. The edit decides whether people stay past the first three seconds. What to do, in order:

1. Cut to the hook. The first sentence should be the point. “Hey guys, so” goes.
2. Remove restarts and repeats. If you said a sentence twice, keep the better one.
3. Tighten the pauses. Shorts move fast, but do not take every pause to zero; a talking head without breaths sounds rushed. The typical gap between sentences in the videos we measured was about a third of a second (How long should a pause be?).
4. End when the point is made. A quick ending also helps the Short loop.
5. Add captions and a text hook. Many viewers watch without sound.

Steps 1 to 4 are where the time goes on a timeline: playing, listening for the restart, scrubbing to it, splitting. In slicecut you do them by reading. Import the take on your phone and it becomes a transcript; tap a word or drag across a sentence to strike it, and the cut lands right before the next word. One dial sets every pause to a target length. The export is rendered on the phone at source quality, without a watermark, and saved to your gallery, ready to upload or to finish with captions in YouTube Create or CapCut.

You can also record several hooks in one take and export a version with each, then test which one works.

Common mistakes in Shorts

• Horizontal video with bars. It wastes most of the screen. Record vertically.
• Text in the wrong place. The bottom and the right edge are covered by the title, buttons and channel name. Keep text in the middle of the frame.
• Music over speech. On a talking-head Short, quiet or no music is better than music that competes with your voice.
• Too long. Three minutes is the limit, not the target. If a point needs three minutes, it may be a regular video.

Related guides: what is a talking head video, how to edit Instagram Reels and how to make jump cuts.