Video generation models offer customization options for the aspect ratios and resolutions of your generative videos, enabling you to tailor your content for any screen format or project. 

Customizing aspect ratio

• Gen-4: 
  • On the Web App: Click the Aspect Ratio button and choose the format before generating. You can choose between 16:9, 9:16, 1:1, 4:3, 3:4, and 21:9 aspect ratios.
• Gen-3 Alpha Turbo:
  • On the Web App: Click the Settings button on your prompting video to toggle between horizontal (1280x768) or vertical (768x1280) aspect ratio.
  • On the Mobile App: Choose between a horizontal or vertical aspect ratio after selecting an input image.
• Gen-3 Alpha: Aspect ratio is not yet customizable in Gen-3 Alpha.

Please note you can also generate new aspect ratios in by using Expand Video.

Customizing resolution

For Gen-4, Gen-3 Alpha and Gen-3 Alpha Turbo, resolution is fixed at 720p, but can be upscaled after completion. More size options will be offered in the future.

Videos generated in 720p can be upscaled to 4k once the output is complete by clicking on Actions > Upscale to 4k in a Generative Session.

Currently, Runway does not offer numerically customizable pixel sizes beyond the Upscale setting.