How the Episode Editor Lays Out Vertical (9:16) and Landscape (16:9) Projects

Quick answer: The editor has three columns — assets, storyboard, player — and a timeline, and arranges them by the project’s aspect ratio. In a vertical (9:16) project the left and right columns run from top to bottom, and the timeline sits under the storyboard in the middle, so a tall video gets the whole height. In a landscape (16:9) project the timeline runs the full width along the bottom and the player fills the right column’s width. Under each segment’s storyboard is one row of buttons; under the player, Edit this clip.

Still from “Rocket Pup”, an AI short drama generated end-to-end by SceneMixer (7 characters, 1 episode) — Sample: “Rocket Pup” — Feature 3D Animation, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Open a 9:16 project and a 16:9 project side by side: the timeline moves from the middle to the full width.

The three columns

Left: the episode’s assets — characters, locations, props. Middle: the selected segment’s storyboard. Right: the player for that segment, with its controls and the Edit this clip panel. Timeline: one card per segment. A tour of the editor.

The SceneMixer episode editor: asset library on the left, the storyboard in the middle, the video preview on the right, and every segment along the bottom timeline — The episode editor: assets on the left, the storyboard in the middle, the player on the right, the timeline along the bottom.

Vertical projects

A 9:16 clip is tall, so the right column runs the full height of the window and the player is as tall as the column allows, after leaving room for the controls under it. The left column runs full height too. The timeline sits only under the storyboard in the middle. On a wide screen the right column widens to fit the video.

Landscape projects

A 16:9 clip is wide, so the timeline gets the full width of the window along the bottom, and the side columns stop above it. The right column takes a fixed share of the width and the video fills it edge to edge. Vertical or landscape.

The row under the storyboard

Every segment’s storyboard card ends with one row: Edit, AI edit and History on the left, Insert and Delete after them, and a single solid button on the right — Generate or Regenerate — with its price. On a narrower window the smaller buttons shrink to icons first, and only then does the row wrap into two lines. AI edit and History.

Under the player

One line with Play continuously, the version number and length, share and download; on a narrow column share and download become icons. Below it, whenever the segment has a clip, the three tabs of Edit this clip: AI visuals, Redub and Trim. Edit this clip.

The timeline

When there are more segments than fit, small arrows appear at the two ends; click one to scroll about a screen’s width, or scroll with the mouse wheel — it moves sideways. The selected segment is scrolled into view when you change segments, and the timeline stays where you left it otherwise. Every icon on a timeline card.

Full screen

The player’s full-screen button shows the whole clip, vertical or landscape, with the controls, and Play continuously keeps going from segment to segment in full screen.

On a phone

The columns become tabs — Assets, Script, Preview. On the Script tab the buttons sit in two rows of three, with the main button’s price under its label. Using SceneMixer on a phone.

	Vertical (9:16)	Landscape (16:9)
Side columns	Full height	Stop above the timeline
Timeline	Under the storyboard only	Full width along the bottom
Player	As tall as the column allows	Fills the column's width
Right column width	Follows the video	A fixed share

FAQ

Can I switch between the two layouts?

The layout follows the project's aspect ratio, which is set when the project starts.

The buttons turned into icons. Where did the words go?

The window is narrow; hover an icon to see its name, or widen the window.

Why does the timeline sit in the middle in my project?

It is a vertical project; the side columns run full height to give the tall video room.

Work in the layout that fits your video

Tall columns for vertical, a wide timeline for landscape, the same buttons in both.

Open your project

Updated September 30, 2026