Adding an episode after the season already exists

Most tools in the register describe planning episodes from the start: a season plan, a cap on episodes per project, assets reused through a series. One documents the other direction, adding an episode to a project that already exists by pasting, uploading or generating the continuation and reading only the new pages. As of 2026-10-13.

Fig. 1 After an episode is added, the project can no longer be read again as a whole.

What each tool publishes about adding episodes to a series, and what the new episode inherits. Recorded 2026-10-13.
Tool	What is published	Detail
Dramily	Up to 120 episodes in one project	Scenes, props and characters become reusable assets for a new episode
invideo AI	A season plan built episode by episode from an idea, script or show bible	Nothing published about adding to a finished season
PopShort AI	Characters, scenes and props stored as assets reused throughout the series	Nothing published about appending text
SceneMixer	Add an episode by pasting or uploading the continuation, or let AI continue the story	Only the new pages are read; the shared cast is attached
Showrunner Studio	Writing a scene returns an episode	Sets, characters and canon persist across the series

Inclusion rule. Tools whose pages describe how episodes are added or planned beyond the first. A tool that only states an output format does not earn a row. Order. Alphabetical by tool.

1Planning a season and extending one are different operations

A season plan, an episode cap and a reusable asset library all assume the shape of the series is known when work starts. Serial drama rarely works that way: a run that finds an audience is extended, and the extension is written after the first episodes are out.

Extending means reading new text against a cast that already exists. Planning means reading one text and building the cast from it. Only one tool here documents the first as a step of its own, with a button at the bottom of the episode list.

2What the new pages are read against

When an episode is added, only the appended pages are read. Characters, scenes and props the new pages share with earlier episodes are attached automatically, and anything appearing for the first time is listed with an offer to generate its sheets at a stated price. The earlier episodes, their storyboards and their clips are left as they were.

The same guide offers to write the continuation from where the story stands, in the same language and format as the script, as a draft to edit before it is added.

3What extending gives up

One rule is stated plainly: once anything has been added, the whole project cannot be read again, so a different episode split means a new project. That is a reasonable trade, since re-reading everything would risk changing episodes that are already made, and it is the kind of constraint that is better published than discovered.

For a second season that should stand on its own, the alternative documented is a new project with the cast carried across, which is the subject of the next question.

Script to episodes
Each project is stated to support serialized dramas of up to 120 episodeswith a stated ceilingDramily, home page / recorded 2026-09-22
Cross-episode cast
Character dynamics, scenes and props are described as turned into reusable assets so a new episode keeps the visual continuitynamed reusable assetsDramily, home page / recorded 2026-09-22
Script to episodes
The agent is described as turning an idea, script or show bible into a season plan, episode by episodevendor claiminvideo AI, microdrama page / recorded 2026-09-12
Cross-episode cast
Characters, scenes and props are stated to be stored as reusable production assets, reusable throughout the series to help maintain consistency from Episode 1 to Episode 50stored assets with a stated spanPopShort AI, home page / recorded 2026-09-22
Script to episodes
Writing a scene is stated to return an episode, and a show started in any genre is described as being shaped into a seasona scene in and an episode outShowrunner Studio, home page / recorded 2026-09-22
Cross-episode cast
The sets, characters and canon are stated to persist across the whole series, held in the product as the show's worldpersistence stated for a seriesShowrunner Studio, home page / recorded 2026-09-22
Adding an episode later
An episode can be added to an existing project by pasting or uploading the continuation, or by letting AI write it from where the story stands; only the new pages are read and chargedSceneMixer, next episode guide / recorded 2026-10-13
What the new pages are read against
Characters, scenes and props shared with earlier episodes are attached to the new episode, and anything appearing for the first time is offered for sheets with the price shownSceneMixer, next episode guide / recorded 2026-10-13
What adding gives up
Once an episode has been added, the whole project cannot be read again; a different episode split needs a new projectSceneMixer, next episode guide / recorded 2026-10-13

4The words this register uses

Terms with a page of their own, each recording what vendors publish about it, include segment and shot, reference image, character consistency, storyboard script, scene plate, novel to video, AI short drama and vertical micro-drama.

5Sources

Each cell above traces back to a vendor page named in the register, read 2026-10-13. Where the boundary sits between documented, claimed and absent is spelled out under how read. Also here: Cast in a new project, Several names, Across the join.