Vertical Video Maker
Vertical Video Maker AI: Create 9:16 Videos for Social Media
Create vertical 9:16 videos optimized for every social platform with AI. FluxNote generates complete vertical videos with scripts, voiceover, HD footage, and animated subtitles — purpose-built for TikTok, YouTube Shorts, Instagram Reels, and Facebook Stories.
Last updated: February 23, 2026
How It Works
Enter your content
Type a topic, paste a script, or describe your video. AI generates a script optimized for vertical viewing.
AI creates vertical video
Content becomes voiceover, matched with vertically-framed HD footage, and overlaid with centered subtitles.
Choose subtitle placement
Select from 25+ subtitle styles with vertical-optimized positioning — centered for maximum readability on phones.
Export in multiple formats
Download in 9:16 (vertical), plus 16:9, 1:1, and 4:5 from the same generation.
Key Benefits
Built for vertical-first
Every element is optimized for vertical viewing — footage framing, subtitle placement, and pacing designed for the phone-first experience.
All vertical platforms covered
One video works across TikTok, YouTube Shorts, Instagram Reels, Facebook Stories, and Snapchat Spotlight.
Four format exports
Generate once, export in 9:16 (vertical), 16:9 (landscape), 1:1 (square), and 4:5 (portrait) — cover every platform from one video.
Phone-optimized subtitles
25+ subtitle styles positioned and sized for readability on mobile screens, where 95%+ of short-form video is consumed.
Why vertical video dominates social media
Over 95% of social media is consumed on mobile phones, which are held vertically. Vertical 9:16 video fills the entire screen, creating an immersive experience that horizontal video cannot match on mobile.
Every major platform now prioritizes vertical video: TikTok, YouTube Shorts, Instagram Reels, Facebook Stories, and Snapchat Spotlight. Creators who produce vertical-first content consistently outperform those who repurpose horizontal video.
FluxNote generates videos that are vertical-native from the start — footage framing, subtitle placement, and pacing are all designed for the 9:16 viewing experience.
Vertical video vs. cropped horizontal video
There's a significant quality difference between native vertical video and horizontal video cropped to 9:16:
- Native vertical fills the screen with properly framed content and centered subtitles
- Cropped horizontal loses important visual information at the sides and often looks awkward
FluxNote selects footage that works naturally in vertical format and positions subtitles for optimal mobile readability. The result looks purpose-built for phones — because it is.
FluxNote also supports exporting in 16:9 (landscape), 1:1 (square), and 4:5 (portrait) from the same video, so you can cover every platform and placement without regenerating.
Vertical video best practices for 2026
To maximize the impact of vertical video content:
- Fill the full screen — Don't leave black bars or empty space
- Center important elements — Subtitles and key visuals should be in the center-bottom third
- Keep text large — Small text is unreadable on phones; use bold, clear subtitle styles
- Hook in the first frame — Vertical video is swiped past quickly; grab attention instantly
- Design for sound-off — Animated subtitles are essential since most viewing is muted
- Optimize for replays — Shorter vertical videos (15-30 seconds) get more replays, boosting algorithm performance
FluxNote's AI automatically applies these best practices to every generated video.