# AI Vertical Video Maker [9:16] > Perfect 9:16 videos! Create TikTok, Reels & Shorts automatically. AI script, voice, footage, captions. Try FluxNote! Create vertical 9:16 videos perfectly optimized for every social platform -- in minutes. FluxNote's AI vertical video maker generates complete short-form videos with AI scripts, voiceover, and animated subtitles that fill the full phone screen on TikTok, YouTube Shorts, Instagram Reels, and Snapchat. ## How it works 1. **Enter your content** -- Type a topic, paste a script, or describe your video. AI generates a script optimized for vertical viewing. 2. **AI creates vertical video** -- Content becomes voiceover, matched with vertically-framed HD footage, and overlaid with centered subtitles. 3. **Choose subtitle placement** -- Select from 25+ subtitle styles with vertical-optimized positioning -- centered for maximum readability on phones. 4. **Export in multiple formats** -- Download in 9:16 (vertical), plus 16:9, 1:1, and 4:5 from the same generation. ## 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. - **Phone-first subtitle positioning** -- Subtitles are automatically positioned in the safe zone for each platform -- avoiding the UI overlays that cover the bottom of TikTok, Shorts, and Reels. No cropping surprises on export. - **All four vertical formats supported** -- Generate in 9:16 (standard vertical), 4:5 (Instagram feed-compatible), and 1:1 (square) from the same project. One video concept, multiple format exports -- maximizing distribution. ## 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. ## Why vertical video has won the attention economy The shift from horizontal to vertical video is complete. Over **60% of all video content consumed online is now in vertical format** -- and that number has been rising every year since TikTok's launch. The cause is simple: people hold their phones vertically 94% of the time. Horizontal video requires either rotating the device (friction) or watching a small letterboxed clip (bad experience). Vertical video requires nothing -- it simply fills the screen. Every major platform has adapted: - **TikTok** was born vertical -- no horizontal content at all - **YouTube Shorts** is vertical-only - **Instagram Reels** is vertical-first - **Snapchat Spotlight** is vertical-only - **Pinterest Idea Pins** are vertical If you're still producing horizontal video for social media distribution, you're fighting the platform's preferred format. Vertical-first creation is now the baseline. ## Vertical video best practices that improve performance **Fill the frame.** The biggest mistake with vertical video is leaving unused space. Your visual content should occupy the full 9:16 frame -- not a letterboxed 16:9 clip in the center. **Design for silent viewing.** On every vertical platform, videos autoplay on mute. Your content must communicate visually and through animated subtitles before a viewer taps to unmute. **Safe zones for text.** Each platform has UI elements that overlap your content. TikTok overlays the creator handle, caption, and interaction buttons. Position subtitles in the center-third of the screen to stay in the safe zone across all platforms. **Cut fast.** Vertical video viewers have higher attention thresholds. Scene changes every 2-4 seconds perform better than static footage. **Hook within 0.5 seconds.** Vertical video viewers scroll in under a second if the opening doesn't grab them. Footage that moves, text that appears immediately, or a visually striking opening image all help. ## Platform-by-platform vertical video guide **TikTok:** 9:16 only. Max 10 minutes, but 15-60 seconds performs best for new creators. Captions autoplay. High-energy, fast-paced content wins. **YouTube Shorts:** 9:16 only. Max 60 seconds (soon to be 3 minutes). The Shorts shelf algorithm is distinct from the main YouTube algorithm. Educational and informational Shorts perform especially well. **Instagram Reels:** 9:16 (full screen) or 4:5 (feed-compatible). Max 90 seconds for Reels. Aesthetic quality matters more here than on TikTok. Saves are the most important engagement metric. **Snapchat Spotlight:** 9:16 only. Max 60 seconds. Younger demographic (13-24). Casual, humorous, and trending content performs best. **LinkedIn video:** Vertical is now supported and growing. Professional thought leadership in 9:16 stands out dramatically because most LinkedIn video is still horizontal. ## Frequently asked questions ### What resolution are vertical videos exported at? FluxNote exports vertical video at 1080x1920 (Full HD 9:16), which is the standard high-quality resolution for TikTok, YouTube Shorts, and Instagram Reels. ### Can I export the same video in multiple formats? Yes. FluxNote supports exporting in 9:16 (vertical), 16:9 (landscape), 1:1 (square), and 4:5 (portrait) from the same generation. One video, four formats. ### Are subtitles positioned correctly for vertical viewing? Yes. Subtitles are automatically positioned in the center-bottom area of the vertical frame, where they're most readable on phones without obscuring key visuals. ### Which platform should I post vertical videos on first? Post on all platforms simultaneously -- TikTok, YouTube Shorts, and Instagram Reels. The same 9:16 video works across all three. Different platforms may surface your content to different audiences. ### Is the vertical video maker free? FluxNote offers 1 free vertical video per month with no watermark. All four format options (9:16, 4:5, 1:1, 16:9) are available on the free plan. Paid plans start at $19/month for 30 vertical videos. ### What resolution are vertical videos exported at? FluxNote exports vertical videos at up to 1080x1920 (1080p). This is the maximum resolution supported by TikTok, YouTube Shorts, and Instagram Reels for vertical content. ### Can I export the same video in multiple vertical formats? Yes. Once you've generated a video in FluxNote, you can export it in different aspect ratios from the editor. The content adapts to each format, with subtitle positioning adjusted appropriately for each platform's safe zones. --- Source: https://fluxnote.io/tools/vertical-video-maker-ai