Create and Convert 9:16 Video for Mobile
Create or prepare 9:16 video drafts in Vidu for mobile-first viewing on social feeds, stories, and short-form platforms. Start from a script, image, clip, or rough edit, then check framing, captions, and crop safety before export. Vidu helps creators and teams keep the main action visible in a vertical layout.
How to Prepare a 9:16 Video in 3 Steps
Learn the key steps for preparing a 9:16 video so your content fits vertical viewing, stays easy to follow on mobile, and keeps the main subject visible.
What Is a 9:16 Video?
9:16 video is a vertical aspect ratio commonly used for mobile-first content. The frame is taller than it is wide, so composition choices matter more than simply cropping a horizontal video. Vidu helps creators think through framing, subject placement, and vertical video preparation as part of a broader AI Video Extender workflow.
How to Use 9:16 video
Step 1: Start with your source
Start with your clip in Vidu, then load the source video you want to turn into a 9:16 video for mobile viewing in the AI Video Enhancer inside the AI video generator.
Step 2: Describe the change
Start with the format you want so the first vertical draft is built around the right frame, crop, and mobile view from the beginning, and use AI Video Extender when you need to adapt the same clip for a taller layout.
Step 3: Review and export
Preview the 9:16 video in the frame it was made for, then fine tune or export once the vertical format matches your goal.
9:16 vs 4:5 vs Horizontal Video
Use this checklist to decide when 9:16 video is the right format for your content, especially when you want a vertical layout that fits mobile viewing and social platforms.
| Review area | Traditional workflow | Vidu 9:16 video workflow |
|---|---|---|
| First input | Collect assets and define the edit before previewing | Start from one focused source and review the first draft sooner |
| Revision point | Adjustments usually happen after a longer manual pass | Prompt changes can be checked while the idea is still flexible |
| Best use | Detailed finishing when the direction is already approved | Early testing when the team needs proof before deeper production |
Creative Ways to Use 9:16 video
These examples show how the 9:16 video workflow can support practical review paths for creators, marketers, and teams working on vertical content, especially when they start from video templates.
Review Setup
Set up the source clip, the vertical format goal, and the review points before generating a 9:16 video draft that is easy to evaluate for mobile viewing.
Channel Adaptation
Adapt the result to the channel, placement, or audience context so it fits where it will appear instead of repeating the same use case.
Approval Pass
Check whether the draft is ready for approval, needs refinement, should be tested in another format, or calls for a new direction.
Short form social content
Prepare vertical drafts that fit mobile-first viewing, helping your content stay clear and easy to follow when attention is limited.
Product demos
Frame products and hands together so viewers can clearly follow the key action, see how the item is used, and understand the details that matter.
Creator videos
Keep the face, expression, captions, and gestures clearly within the vertical frame so the video stays easy to follow on mobile screens.
Aspect Ratio Checks Before Export
Use this check before export when a 9:16 video needs a quick look for framing, spacing, and crop safety in the AI Video Editor before the next edit.
Source Check
Start with a clean source, script, or reference so the 9:16 video output can be evaluated against the original idea without guessing what was changed.
Prompt Formula for 9:16 video
Shape your 9:16 video request around the result you want from Vidu, whether that means creating a vertical clip or converting existing footage into a format that fits TikTok, Reels, and Shorts. The tool is built to help you work in 9:16, 4:5, or other vertical layouts without losing the focus of the original video.
Source
Start by naming the exact material Vidu should use for 9:16 video: the clip, image, audio, script, face reference, or quality issue that defines the job. Add only the context that affects the output, such as format, subject, scene, duration, language, or target channel, so the first draft does not drift into a different task.
Direction
Write the instruction as a production note for 9:16 video, not as a vague creative wish. Describe what should change, what should stay consistent, and the visible or audible result you expect. Keep the request narrow enough that one generated version can be compared fairly against the original brief.
Review
Before keeping the 9:16 video result, define the review condition in plain terms: what must look natural, sound clear, remain stable, or match the intended use. Check the output in the context where it will be published, then decide whether to export, refine, or restart with a sharper instruction.
Frequently Asked
Questions
Vertical mobile video means a tall frame designed for phone viewing, where the subject, captions, and motion need to fit naturally inside a narrow screen. It is not just a crop from a wider clip. The composition should be planned so the main action remains visible and the final result feels intentional on mobile platforms.
Format Videos for Mobile Feeds
Prepare Vertical Videos
Use Vidu to prepare a 9:16 video draft and review whether the vertical frame keeps the subject clear.