Aspect ratio, decided before the first shot
Aspect ratio is the proportion of the delivered frame, written as width against height. In serial work it is a production decision rather than an export setting: a tall frame fills with faces, barely holds a two-shot, and wastes a wide establishing shot. As of 2026-09-12.
| How a page can treat it | Example wording | What a reader can rely on |
|---|---|---|
| A property of every export | Every episode exports vertical | The shape, without exception |
| A stated default | Widescreen by default, with vertical available | The common case, and an alternative |
| A control | Aspect ratio chosen before generating | Nothing, until they choose |
| An operation | Reframing listed among the operations | A second cut, not a first decision |
| A recommendation | Vertical usually suits these platforms | The vendor's view, not the output |
Inclusion rule. Five ways a page can treat the frame, drawn from the wording on this file. A sample reel is not recorded as evidence about the frame. Order. From the strongest commitment to the weakest.
1Cropping is not the same as composing
A tall crop of a wide shot moves somebody out of the picture, and in a two-hander it removes the listener, which is the half of an exchange an audience reads a reaction from. No operation puts them back.
Reframing is genuinely useful for producing a second cut cheaply. As an answer to what shape the work is, it arrives after the staging decisions it should have governed.
2A ratio and a resolution answer different platform checks
A feed rejects a file for the wrong shape and downranks it for being soft. Those are two separate checks with separate consequences, and one page on this file states both in the same sentence.
Where only the ratio is published, a reader knows the picture will be the right shape and nothing about whether it will be accepted. Inferring pixel dimensions from a ratio would be arithmetic on a number nobody published.
3Sample reels are not evidence
A page can show vertical samples and generate whatever the underlying model defaults to. The reel was made by somebody who knew the product; the default is what a new account gets.
So the statement is the evidence. Where no statement exists, the honest position is that the frame is unknown until a file is exported.
4Where these figures come from
A definition kept for this register: the term, and what vendors state about it, each figure read on 2026-09-12. The tools themselves are on the register. Related: Credit, Show canon.
5Continuity in practice
Serial work like “Aspect ratio” depends on continuity; SceneMixer's guides describe how it keeps it:
Character sheets are always portrait and scene images always widescreen, whatever ratio the videos use.
SceneMixer, Vertical 9:16 or Landscape 16:9 — “Will choosing 9:16 make my character images vertical?” (read 2026-10-13)
The same face across an entire series is the design target and what the reference-sheet architecture delivers for the cast in your asset library.
SceneMixer, AI Video Generator With Consistent Characters — “How consistent is it, really?” (read 2026-10-13)