# Aspect ratio

> The width-to-height shape of a video — 9:16 vertical for shorts, 16:9 wide for YouTube.

*Formats*

*Also known as: 9:16, 16:9, 1:1*

Canonical: https://novaclipper.com/glossary/aspect-ratio

Aspect ratio is the proportional relationship between a video's width and height. Short-form platforms are built for 9:16 vertical, which fills a phone screen; traditional YouTube and most cameras shoot 16:9 widescreen; 1:1 square sits in between and works across feeds.

Turning a 16:9 recording into a 9:16 clip means more than cropping the sides — the subject has to stay framed as the action moves. Smart reframing tracks the active speaker or focal point so nobody's face drifts off the edge.

## Related

- [What is reframing?](https://novaclipper.com/glossary/reframe)
- [Turn YouTube videos into Shorts](https://novaclipper.com/blog/turn-youtube-videos-into-shorts)

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