Long-form AI video generator for YouTube
Paste a script. Get a finished hour-long video.
Real sample · History for sleepWhat is Longformly?
Longformly is a long-form AI video generator for YouTube. You paste a script, or give a topic and a length, and it returns a finished video of up to 60 minutes: narration, scenes built from your script, gentle motion, ambient sound and captions. It is made for faceless channels such as history for sleep, space documentaries, true crime, finance and science. You watch a free 10-second preview first, with no card and no account, and pay only if you want the full video. You can pay once per video or buy credits, where one credit is one minute of finished video. Every download comes with an .srt captions file, a credits.txt that lists the source of every image and sound, and thumbnails. Images come from licensed or public-domain archives or are made for your video, so you can paste the credits into your video description. The video is a 1080p MP4 that you download and upload to your own channel.
- Input: a pasted script of up to 50,000 characters, or a topic we write from
- Output: one video of up to 60 minutes, 1080p MP4, with a captions file (.srt) and a credits file
- Niches: history for sleep and space documentaries, plus true crime, finance, science, sleep stories and custom
- Free preview: 10 seconds with a watermark, no card, no account
- Price: $9.90 per video up to 60 minutes; failed renders are never charged
Best AI video generator for long videos? Watch a real film first
Two specialities are tuned end to end: history for sleep and space, each with its own looks, script templates, voices and soundscapes. Every scene is planned from your script and brought to life with slow motion and light.
History for sleep
Space
History for sleep
Space
History for sleep
SpaceAn AI documentary maker for any niche you can write
Every niche gets the same one-click pipeline. Two are our specialities, tuned end to end with their own looks, script templates and soundscapes.
History for sleepSpeciality
Hour-long, slow and calm. Painterly period scenes checked for accuracy, firelight and snow, a soft narrator and a quiet soundscape.
See history for sleep videosSpaceSpeciality
Public-domain space photographs, plus generated scenes where no photo exists, with calm or cinematic narration.
See space videosTrue crime
Case-file look: maps, timelines, documents and evidence boards. No real victims' photos are generated.
Finance
Clean explainer look with charts, counters and simple scenes for money rules and market stories.
Science
Flat, glowing explainer artwork for how cells, planets, weather and machines work.
Sleep stories
Fiction for grown-ups: cosy places, soft voices and long, gentle scenes for one to three hours.
Your niche
Mythology, psychology, nature or anything else: paste the script, pick a look, and preview it free.
Script to video in three steps
You decide the story. We render it and keep it in My videos until it is ready.
Paste or generate a script
Bring your own, or give us a topic: we outline chapters and write them one by one, so a 90-minute story never loses the thread.
We build the film
Scenes, narration, ambient sound and gentle motion, with live progress. Close the tab if you like: your video is saved in My videos.
Download and upload
A 1080p video, a captions file, plus a credits file listing where every image and sound comes from.
Calm on screen. Careful underneath.
Period details, checked
No chimneys on a 1350 cottage, no glass in peasant windows, an open hearth in the middle of the floor. History viewers notice.
Every image is yours to use
Pictures are made for your video or come from public-domain archives. Nothing is lifted from another channel.
A voice that isn't on every channel
Calm narrators beyond the handful everyone uses, with slow pacing and natural pauses for sleep.
Scripts that hold for 90 minutes
Chapter by chapter, each aware of what came before, so the story stays even and sleepy to the end.
See it first. Pay only for the video you want.draft numbers
No subscription needed to start. Subscribe later only if you post every week.
- 1 · Free previewA 10-second preview of your own video. No card.
- 2 · Unlock this videoLike it? Pay once for the full video. Your first video is $6.90, then $9.90.
- 3 · Subscribe if you post oftenMonthly plans make each hour cheaper. Cancel in one click.
- All looks and standard voices
- 1080p download + credits file
- Email when your video is ready
- Everything in Starter
- Script writing included
- Premium voices available
- Everything in Creator
- Several channels, one account
- Priority rendering
- ✓ Free preview before any payment
- ✓ Pay per video, no subscription
- ✓ Failed renders are never charged
- ✓ Apple Pay, Google Pay, cards
- ✓ Unused hours roll over a month
- ✓ Cancel a plan in one click
Questions
Can these videos be monetised on YouTube?
They are built for it: your script, licence-clean images and sound, and a credits file. YouTube asks creators to disclose realistic synthetic content; we show you where to tick that box. Monetisation is always YouTube's decision.
Which niches work best?
History for sleep and space are our specialities, with their own looks, script templates and soundscapes. Any other niche works in general mode: paste the script and pick a look.
What does the free preview include?
A 10-second preview of the opening of your own video, watermarked, so you can judge the look and the voice before paying. It is short on purpose: the full video is the whole script.
Do I have to subscribe?
No. You can pay once for a single video, with Apple Pay, Google Pay or a card, and no account.
How long does a video take?
It depends on length and how busy the studio is. The page shows live progress and a time estimate once your video starts. You can close the tab: the video is saved in My videos on this device, and the same link opens it later.
What if a render fails?
A failed render is never charged, and you can retry without pasting the script again.
Where do the images and sounds come from?
They are generated for your video or taken from public-domain archives, and listed in the credits file that comes with every download.
Paste your script and watch a free preview
Paste a script, watch a 10-second preview free, then pay only for the video you want.
Make my free previewNo card needed · no subscription · failed renders never charged