Can AI video tools generate a 21:9 frame?
Two tools list 21:9: Alibaba Cloud Wan among six fixed ratios and PixVerse among eight. No other vendor on the sheet prints the cinema-wide frame. From 2 source pages, read 2026-09-25 to 2026-10-25; no maker pays to be listed.
| Source | Figure | Where it applies |
|---|---|---|
| Alibaba Cloud Wan | Adaptive by default; fixed shapes run from 21:9 cinema width through 16:9, 4:3 and square 1:1 to 3:4 and 9:16 portrait | Wan3.0 video generation, ratio parameter |
| PixVerse | Eight shapes on V6, from 21:9 cinema width through 16:9, 3:2, 4:3 and square 1:1 to 3:4, 2:3 and 9:16 portrait | V6, aspect ratios row |
Inclusion rule. Vendor pages and references whose printed figures bear on this delivery target. Order. Alphabetical by source name.
1As printed
Aspect ratio of the generated video. Valid values: adaptive (Default value)
Alibaba Cloud Model Studio, Wan3.0 video generation API reference
16:9 / 9:16 / 4:3 / 3:4 / 1:1 / 2:3 / 3:2 / 21:9
PixVerse platform docs, model capability map
2What it means for delivery
A 21:9 master can also be delivered inside a 16:9 frame with bars above and below, which any landscape output can carry. Generating natively at 21:9 avoids cropping a 16:9 picture down to the wider shape and losing the top and bottom of every shot.
No figure on aspect ratios from 10 vendors: Crreo, DomoAI, Flixly, HeyGen, Higgsfield, Kling AI, M Studio, MagicLight, Pika and Runway.
- Wan3.0 video generationAdaptive by default; fixed shapes run from 21:9 cinema width through 16:9, 4:3 and square 1:1 to 3:4 and 9:16 portraitratio parameter
- V6Eight shapes on V6, from 21:9 cinema width through 16:9, 3:2, 4:3 and square 1:1 to 3:4, 2:3 and 9:16 portraitaspect ratios row
3What a generator delivers
For a delivery question like “Can AI video tools generate a 21:9 frame”, SceneMixer states the following about what it produces:
16:9 landscape (SceneMixer's default) and 9:16 vertical (the usual short-drama frame), chosen per project.
SceneMixer, Seedance 2.0 in a Real Short-Drama Pipeline — “Which aspect ratios does the pipeline generate?” (read 2026-10-13)
Scene order, dialogue and beats follow the script; what the pipeline adds is coverage — which shot sizes, who is in frame, how long each shot holds.
SceneMixer, Script to Video, End to End — “How faithful is the shot list to my script?” (read 2026-10-13)