YouTube Shorts Maker
In short: YouTube Shorts can be up to 3 minutes long in a square or vertical format. Drop a long video into AIClipMaker.org, choose the part and clip length, and it exports vertical 9:16 MP4s that upload straight as Shorts.
Independent guide. Platform limits checked in each platform's help center on November 15, 2026.
What YouTube accepts as a Short
| Spec | Value |
|---|---|
| Length | Up to 3 minutes |
| Aspect ratio | Square or vertical (9:16 fills the screen) |
| Uploads at once | Up to 15 short videos from a computer |
From YouTube Help, "Upload YouTube Shorts", checked November 15, 2026.
How to do it with AIClipMaker.org
- Open AIClipMaker.org and drop your video file (MP4, MOV or WebM).
- Set the start and end of the part you want, for example 12:00 to 22:00.
- Choose a clip length: 15, 30, 45, 60 or 90 seconds. You get up to 10 clips per run.
- Leave reframe on AI face tracking so each clip is cropped to 9:16 around the speaker.
- Download the 720×1280 MP4s and post them.
Before you post
- Watch the first second. If nothing is happening, trim the start or pick a different start time.
- Add captions in the YouTube app or YouTube Studio; AIClipMaker.org does not add them.
- Upload several Shorts at once from YouTube Studio, then finish the title and details for each draft.
See also YouTube to Shorts and YouTube clip maker.
Make vertical clips from your video
FAQ
What size is a YouTube Short?
Vertical 9:16 fills the screen. 1080×1920 is the common upload size; 720×1280 is the same shape. Details in YouTube Shorts aspect ratio.
How long can a YouTube Short be?
Up to 3 minutes, according to YouTube Help.
Can I make Shorts from a horizontal video?
Yes. AIClipMaker.org crops each clip to 9:16 and uses AI face tracking to keep the speaker in frame.