Can Seedance 2.5 Generate Vertical Videos?

Overview

Yes, Seedance 2.5 can support vertical video workflows on current WaveSpeedAI routes where the endpoint exposes a vertical aspect ratio or follows a vertical input image. The text-to-video page lists 9:16 among aspect-ratio choices, while image-to-video follows the input image’s aspect ratio.

Vertical output should be planned from the first prompt, not cropped as an afterthought. Put the main subject in a safe center zone, avoid important action at the far edges, and describe camera movement that fits portrait framing. A wide tracking shot may look good in 16:9 and fail in 9:16.

For ads and social clips, test vertical prompts with the platform surface in mind. Leave space for captions, product overlays, app UI, or call-to-action graphics if they will be added later. Also check whether text, logos, and small packaging details survive the chosen resolution.

WaveSpeedAI makes vertical testing straightforward because teams can compare aspect-ratio settings and source images before moving to delivery renders. Store accepted vertical prompts separately from widescreen prompts; the same wording rarely works equally well in both formats.

Source: ByteDance Seed official Seedance 2.5 page; WaveSpeedAI Seedance 2.5 API collection. Source check: 2026-08-29.