AI Video Generator Free Unlimited: Every Limit a Generator Has, With the Numbers

Quick answer: No AI video generator is free and unlimited at once, and a page that says it is has only moved the limit somewhere you cannot see. Video is paid for by the second, so a limit always exists: on credits, on how many jobs run together, on length, on size, on how long files are kept, on how fast you may click. This page lists every limit SceneMixer has, with the real number where there is one and the place you meet it, then gives four questions that turn any “unlimited” page into a list of numbers.
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

Six kinds of limit, in one register

Money, time, size, storage, frequency and content are the six places a limit can live. Here is each, with the number on this site. Numbers marked as live are read from the site's price list when this page is built.

KindLimitThe number hereWhere you meet it
MoneyCreditsNo unlimited plan: every plan works in credits. 50 welcome credits once; credits do not expireThe price on every button; the balance in the top bar
TimeGenerations at once3 on a free account, 5 on Pro, 8 on Studio, 10 on Enterprise, more above thatCards that say Queued; they hold their credits and start by themselves
TimeHow long one clip takesMinutes, not seconds, for one segment, on every plan; the estimate on screen is an average of what recently finished, not a promiseA generating card with its progress
SizeLength of one segmentFrom 4 seconds up to 15 on some tiers and 30 on othersA segment over its tier's cap is refused before anything is charged
SizeSegments in an episodeUp to 60The timeline of an episode
SizeLength of an episodeShort Drama up to 240 seconds, TV Series up to 300, Film no capStep 1, Type
SizeScript lengthRead in one pass below 10,000 counted characters, in two passes up to 100,000; for English that is 300,000 raw characters, because 3,333 English characters count as 1,000The counter under the script box
SizeCast per projectUp to 100 characters and 100 propsStep 2
SizePicture qualityTiers rise to a 2K tier, each at its own price per secondThe model button in the editor
Free quotasWhat is free15 setup images per account, the first storyboard of the first drama, one batch of cover posters, one 5-second preview per accountA free label on the button; used is used
StorageUploadsJPG or PNG up to 20 MB; a paid-plan feature with a quota on the plan card. Only uploads count; everything generated is stored freeThe asset library
StorageHow long things stayGenerated files until you delete them; deleted files cleaned up about seven days later; uploads 30 days by default outside an active projectDeleting, and the privacy page
StorageA share linkNo expiry date, with a daily play limit per link and a daily limit for the whole siteA poster instead of the player, until the next day
FrequencyClicks that cost the site moneySign-in codes, image recognition and voice matching are limited per hour; the click is refused, nothing is chargedA message that tells you to wait
ContentBlocked video attemptsMore than 12 in a day pauses video submission for 1 hourA banner on the project
SourceA clip for a remakeUp to 5 minutesThe upload box

Two of these are the ones people mean by “unlimited”, and both are real ceilings. There is no flat price for any number of seconds, because each second is a paid model call at the provider. And there is no count of generations that is free in a way that avoids that: the only free video is the one preview. What a paid plan changes and why unlimited plans disappeared explain the arithmetic.

What stays the same on a free account

Free changes how much you can do at once and how much you have to spend; it does not change the rules of the register. The same tiers, the same length caps and the same script limits apply, and one segment takes the same time. What a free account lacks is seconds, not features of the picture: video is charged from the first second apart from the single preview, and a free account runs 3 generations at a time. Everything above that is a decision about how many credits you want to buy. What SceneMixer gives you for free lists the free quotas and their conditions.

The credits you start with last as long as you want them to: welcome credits, bought credits and plan credits do not expire, and an offer such as a first-purchase bonus is the only kind that can carry a deadline. Do credits expire?.

Four questions that turn “unlimited” into numbers

Unlimited what? Seconds, generations, images, downloads or sign-ins are different things. A page that says unlimited without a noun has not told you anything. At what length and quality? A cap of a few seconds per clip, or a lower resolution for free, is a limit even if the count is unlimited. How many at once? One job at a time makes a long batch a long wait whatever the count. For how long, and where? Files that are removed after a day, or only kept while you are signed in, make the count irrelevant. If a page answers all four with numbers, it is telling you the truth even when the numbers are small. AI video generator free: seven hidden costs goes through the same test from the other side, and the free AI video generator page shows where free ends here.

FAQ

Is there a free AI video generator with unlimited use?

Not here, and not anywhere that charges by the second for its own costs. SceneMixer is free to start with 50 credits, free setup images and a free preview; video is paid from the first second.

How many videos can I make for free?

One free preview of up to 5 seconds per account. After that a video is made from credits: the welcome credits cover one short segment, and more takes more credits.

Do the free credits expire?

No. Welcome, bought and plan credits stay in your balance until you spend them.

How many generations can run at once?

3 on a free account, 5 on Pro, 8 on Studio and 10 on Enterprise, with more on the higher plans. Extra ones queue and start by themselves.

What is the longest video I can make?

A segment is up to 30 seconds on the 30-second tiers, an episode holds up to 60 segments, and episode length is capped by type: 240 seconds for Short Drama and 300 for TV Series. Film has no cap.

Is there a limit on how often I can click?

A few helper actions are limited per hour, such as image recognition and voice matching. A refused click costs nothing. Generations are never refused for frequency; they queue.

How long are my files kept?

Generated files stay until you delete them. Deleted files are cleaned up about seven days later. Uploaded reference material is kept 30 days by default unless it is in an active project.

Why does a paid plan not make it unlimited?

Because each second of video costs the site a model call. A plan adds credits every month and lets more of your jobs run at once; it does not remove the per-second price.

Start with the numbers on the buttons

Sign up free, read a short script and look at the price on each button before you press it. Every limit above is visible before you spend.

Start free

Updated November 2, 2026