Can Seedance 2.5 Generate 16:9 Videos?

Overview

Yes. Current WaveSpeedAI Seedance 2.5 text-to-video documentation lists 16:9 as an aspect-ratio option, and image-to-video can follow the aspect ratio of the input image. That makes 16:9 a practical choice for widescreen ads, demos, concept films, and landing-page video assets.

Use 16:9 when the scene needs horizontal movement, environment, two-person framing, product plus setting, or cinematic composition. It gives more room for camera pans and background context than vertical formats, but it is less suited to mobile-first feeds unless you plan a separate crop.

The prompt should use widescreen language. Mention wide shot, tracking movement, background depth, foreground subject, or a left-to-right reveal if those matter. Also plan the final frame, because a good widescreen clip often needs a stable ending for thumbnails, hero sections, or video loops.

On WaveSpeedAI, treat aspect ratio as a saved production setting. Do not generate in 16:9 and then guess whether it will work for a vertical campaign. If the same concept must ship across formats, render and review each format separately. This also makes cost attribution cleaner when one format needs more retries.

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