AI Video Creation Tool: What to Prepare Before You Open It

Quick answer: The costly mistakes in an AI video creation tool are made in the first two minutes, before anything has been generated: the wrong shape, the wrong dialogue language, a story too big for one read, or a cast whose names clash. Text is cheap to change afterwards; several first-screen settings are not. So decide six things on paper first: what you start from, how big the story is, which languages it speaks, what shape and look it has, what its cast is called, and how many seconds of video you can afford. Each section below says what happens if you skip it, and the last one is a filled-in sheet you can copy.
Still from “The Glass Floor”, an AI short drama generated end-to-end by SceneMixer (5 characters, 1 episode)
Sample: “The Glass Floor” — Digital HD, 1 episode, produced end-to-end by SceneMixer from the script · watch the episodes

Try it: before you open the tool, write one line for each of the six headings below. Any line you cannot write in under a minute is the one to settle first.

1. What you start from

There are four doors, and each wants a different thing ready. Words: a script or novel as .txt, .docx or .md, or pasted text; the floor is about a paragraph, roughly 333 characters of English prose, because below that there is nothing to split into episodes. A link is not fetched, so paste the text itself. An idea: one or two sentences that carry genre, a lead who wants something, an opponent, the ending and the tone. Photos: one to four of the same subject for an ad. A clip: one MP4 or MOV for a remake.

If you skip this decision you will stand at the first screen deciding whether to write, paste or upload while the clock runs. If the material is not yours, stop here: you need the right to use everything you upload. Four ways to start · Writing the one-line brief · What you can feed in.

2. How big the story is

Everything on the site is counted in equivalent characters, and English counts 3,333 characters as 1,000 because it needs about three times as many letters as Chinese for the same amount of story. A script under 10,000 counted characters is read in one pass; a longer one is read in two passes up to 100,000 counted characters, which for English is 300,000 raw characters. Beyond that the tool refuses before you pay rather than cutting the end silently. The read costs 4 credits per 1,000 counted characters, once for the whole project, and the length menu on AI Create prints its price beside each option.

Size also sets how many episodes you get: more characters mean more episodes of a minute or two, not longer episodes. If you skip this decision you either pay to read a book when you wanted a test, or find your script refused. A good first size is the “Short” option on AI Create, enough to see read, sheets, storyboard and video once. Script length caps · Choosing the script length.

3. Which languages it speaks

A project has more than one language. The interface is menus and buttons. The working text, the language your cast, scenes and storyboards are produced in, follows the interface when you confirm Step 1. The dialogue language is what the characters actually say in the clips, chosen in Step 1 from the 15 the site speaks. AI Create writes in the language you are using the site in.

Target region, dialogue language and content type shape what the read writes, and once the read has finished they cannot be changed in that project. The ways out are to edit the descriptions and lines, or to start again from the same script. If you skip this decision you can end with an English script spoken in the wrong language. Interface, script and dialogue language · What cannot change after the read.

4. The shape and the look

Choose 9:16 Portrait for a vertical feed and 16:9 Landscape for a channel, a site or a screen. The shape governs video only and is fixed once you continue past Step 1; to make the other shape you start a new project from the same script. Character sheets are always 9:16 and location and prop plates always 16:9, whatever the project is.

The look is split in three on purpose: visual style (the medium), scene style (what the set is built from) and costume style (what people wear). Visual style is fixed after Step 1; scene and costume style are applied once, at the read, and after that you change them by editing the descriptions in Step 2 and regenerating those sheets. If you skip this decision, the first thing you will notice is a project in the wrong shape. Vertical or landscape · Choosing your style settings.

5. What the cast is called

Names are the glue between your text and your pictures. No two assets in a project may share a name, not two characters and not a character and a prop, and one spelling should be used for every person and place throughout the script. Use invented names: a famous character, a celebrity or a brand mascot can be refused, and a reference photo that looks like a real person is flagged. If you skip this decision you meet a rename later, which the tool handles for you across the storyboards, but not before the read has already given two people the same label. Why cast names must be unique · Celebrity, brand or franchise flags.

6. How many seconds you can afford

Decide seconds, not credits. Video is the largest line by far, charged per second, and everything else is rounding: the default tier is 10 credits a second, and a 60-second episode with the join is about 660 credits, $4.11 at the lowest price. Plan a first episode, add room for retakes (a shot that misses is regenerated alone, not the episode), and draft on a low tier before finishing on a higher one. The free pieces cover the cheap steps: 15 setup images, the first storyboard and one 5-second preview. A new account starts with 50 credits.

If you skip this decision you press Generate all on a full episode before you know what one segment costs. The tool does check the balance first: if it does not cover the batch, nothing is submitted. Where credits go · Spend fewer credits.

A filled-in sheet

Here is the sheet for a small first project. Copy the left column and fill in your own.

DecisionExample answerCan it change later?
Start fromA one-line idea turned into a script by AI CreateYes: the draft and the script are editable
SizeThe Short option; three episodes expectedYes, by reading it again in a new project; the read is priced by length again
LanguagesEnglish interface, English dialogueNo: dialogue language is fixed once the script is read
Shape and look9:16 Portrait; Digital HD; one scene style; one costume styleShape and visual style: no. Descriptions: yes
Cast namesFour invented names, one spelling eachYes: rename updates the storyboards
BudgetOne 60-second episode first, about 660 credits, plus room for retakesYes, one segment at a time

You do not need to prepare camera directions, character art, voices or music. The read writes the cast, the voices are matched for free and the episode is scored for you. Your first five minutes.

DecisionIf you skip itWhere it is set
MaterialYou stall at the first screenHome page tabs
SizeA refusal, or a bigger read than you wantedCounter under the script box; AI Create length menu
LanguagesWrong dialogue languageStep 1, before the read
Shape and lookA project in the wrong shapeStep 1; fixed after you continue
NamesTwo people with one labelYour script; Step 2
BudgetA batch you did not priceButton prices; balance in the top bar

FAQ

What do I need before using an AI video creation tool?

A story or an idea, a rough size, the dialogue language, the shape you will post in, a few invented names, and a number of seconds you are willing to pay for. Camera work and character art are not needed up front.

Can I change the language after the script is read?

Not the dialogue language, target region or content type: they are fixed once the read finishes. You can edit lines and descriptions, or start a new project from the same script.

Can I change vertical to landscape later?

No. The shape is fixed once you continue past Step 1. Start a new project from the same script; cast can come across from your library.

How long can my script be?

Under 10,000 counted characters it is read in one pass, and up to 100,000 in two passes. English counts 3,333 characters as 1,000, so the English limit is 300,000 characters.

Do I have to write camera directions?

No. The storyboard is written from your script, and you can edit it for free. A one-line idea is enough to start.

What is free before I spend anything?

50 credits on sign-up, 15 setup images for the account, the first storyboard of your first drama and one preview of up to 5 seconds.

Can I use real people or famous characters?

Avoid them. Famous characters, celebrities and brand mascots can be refused, and a photo of a real person used as a reference can be flagged.

Do I need to install anything?

No. It runs in the browser; the heavy work happens on servers.

Fill in the sheet, then open the tool

Six lines on paper save the settings you cannot change later.

Open the creation tool

Updated November 2, 2026