Vidnebu's AI shorts generator creates 9:16 vertical videos with AI-generated footage, captions, and voiceover, composed for TikTok, Instagram Reels, and YouTube Shorts.
Short-form is a different craft from long-form, not a crop of it. Vidnebu composes vertically from the start: subjects framed for a phone, captions placed where the platform will not cover them, and pacing built for a viewer who leaves in two seconds if nothing happens.
Every frame is AI-generated, so you can make the impossible shots that stop a scroll — and generate ten variations of a hook in the time a single edit would take.
On TikTok, Reels, and Shorts, retention in the opening second determines whether the platform shows the video to anyone else. Vidnebu structures shorts around that: the strongest visual leads, and the hook is written to land before a viewer has decided to swipe. This is the single largest difference from 16:9 pacing, where you have several seconds of grace.
Most short-form is watched with sound off, so captions are not an accessibility afterthought — they carry the content. Vidnebu burns in captions styled for vertical and keeps them clear of the regions where platform UI sits, so nothing important ends up underneath a username or a row of buttons.
Cropping a widescreen video to 9:16 throws away the sides of every frame and usually the subject with it. Generating natively vertical means the composition was built for the format — which is visible immediately, and is why cropped long-form consistently underperforms against native short-form.
Lead with the strongest line. Vertical pacing is unforgiving of slow openings.
Pick an art style, a voice, and a caption treatment suited to vertical.
A 9:16 video with burned-in captions, ready to post to TikTok, Reels, or Shorts.
Composed vertically, never cropped from widescreen.
Text kept clear of platform interface overlays.
Structured around retention in the opening second.
Shots generated for your scene, not pulled from a library.
Burned-in captions carry the content without audio.
Generate several hook variations and post the best.
A tool that creates vertical 9:16 short-form videos from a text prompt or script. Vidnebu generates the footage, voiceover, and burned-in captions and composes for the phone, so the output is ready to post to TikTok, Reels, or YouTube Shorts without further editing.
You can, and it usually underperforms. Cropping to 9:16 discards the sides of every frame, which frequently includes the subject. Generating natively vertical means the composition was designed for the format.
Between fifteen and sixty seconds for most content. Shorter videos loop more often, which platforms reward. Anything past sixty seconds needs a genuinely strong reason to hold a short-form viewer.
Yes, burned in and styled for vertical, positioned clear of the areas where platform UI sits. This matters because most short-form is watched with sound off.
Yes — TikTok, Reels, and Shorts all use 9:16, so one export covers all three. Performance still varies by platform, so test rather than assuming a winner transfers.
More than feels necessary. Short-form performance is driven by the hook, and the only reliable way to find a good one is to try several. Credit-based pricing is designed to make that affordable.