How to Make Vertical (9:16) AI Videos for TikTok and Reels

Why native 9:16 matters
Cropping a 16:9 clip wastes the resolution budget on cut-off pixels. Native 9:16 gives you full sensor on the visible frame.
Models with native 9:16
- Veo 3.1
- Kling 3.0
- Pixverse V5
- Hailuo 02
Prompt changes
- Compose vertically — "subject fills top 60% of frame".
- Avoid wide environment establish shots — they crop awkwardly.
- Center critical elements; edges get cut on some players.
Common mistakes
- Generating 16:9 and cropping — loses ~40% of the pixels.
- Subjects too small — vertical screens reward close-ups.
FAQ
Does Veo 3.1 native 9:16 cost more?
Same cost as 16:9 at the same duration.