Text to Video AI: Turn a Prompt, an Idea or a Script Into a Finished Video

What is text to video AI?

Text to video AI is any tool that makes video from written words. A text-to-video model takes a prompt such as "a red fox running through snow at dawn, slow motion" and returns one shot, usually a few seconds long. A text-to-video generator takes an idea or a script and returns a whole video: it splits the text into scenes, makes a shot for each, records the narration or the characters' lines, times the cuts to the voice and adds captions.

The difference matters when you need something to post. One shot is raw material; a 60-second video is a chain of about ten shots that have to agree with each other and with the voice. FacelessCast does the whole chain from one message.

How does text become a video?

In FacelessCast the text goes through the same steps whether you wrote one line or a full script:

• The text is read as a story: who is in it, where it happens and what each part says.
• It is split into scenes, about one for every sentence or beat, and each scene gets a picture brief: who is on screen, where, doing what, from which camera angle and in what light.
• Each scene is made: a generated AI video clip of about six seconds, or a licensed stock clip chosen for that sentence. Characters come from saved portraits, so they look the same in every scene.
• The narration or the characters' lines are voiced, and the scenes are cut to the real timing of the voice.
• Captions follow each spoken word, and the video is rendered as an MP4 in the frame you asked for.

Prompt, idea or script: where should you start?

Start from whatever you already have; all three give a finished video.

• One line: "a 30-second AI video about why the sea is salty". The studio writes the script at that length, hook first, and asks only what is truly missing.
• A brief: characters, setting, tone, length, frame and how it should end. Everything you say is kept, and the plan card shows how it was understood before anything starts.
• Your own script: it is read exactly as you wrote it, word for word. In a screenplay, the directions are never read aloud, and each character speaks their own lines in their own voice.

How do you write a text to video prompt that works?

Write what the camera sees, not what the video is about. A weak prompt is "a video about the ocean"; a strong one is "a 30-second vertical AI video: a diver's torch finds a glowing octopus in the dark, it changes colour and jets away, calm narrator, captions on". These habits make the difference:

• Name who or what is on screen, and give characters a name and a look so they can be kept.
• Give each scene one action. Two things happening at once in a six-second clip usually means neither is clear.
• Say where and when: the place, the time of day, the weather and the light.
• Add the camera when it matters: a close-up, a wide shot, a slow push-in.
• Say the length, the frame (vertical for Shorts, TikTok and Reels, landscape for YouTube) and the language.
• For dialogue, write who says what, line by line.
• Keep words out of the picture: signs, labels and screens are where generated lettering goes wrong. Put words in the captions instead.
• For a real place, animal or product, ask for real footage: a generated clip of a real place is an imagination of it.

How long can a text to video AI video be?

One generated clip lasts about six seconds, so a longer video is a chain of clips, and its quality depends on how well the scenes join. In FacelessCast a video runs from 15 seconds up to the longest your plan renders: 3 minutes on Starter, 5 on Creator, 10 on Pro and 20 on Studio. "20 seconds" is made as 20 seconds, not rounded up.

AI video is at its best in Shorts and story episodes of up to a few minutes. Long videos usually run on real stock footage, which costs no credits on any plan.

What does text to video AI cost, and what is free?

Generated video is paid per clip, because every clip takes real computing time; everything around it is free or included. On FacelessCast:

Credits come with every plan (400 a month on Starter at $10, up to 4,000 on Studio at $99) and in packs from $5 for 100, which never expire. If a clip cannot be generated it is refunded, and if a video cannot be finished the render stops and the credits come back.

Text to video with real footage instead of AI

Not every text needs generated scenes. When a script is about the real world, a city, an animal, a market, a recipe, real footage tells it truthfully. On FacelessCast's Stock video page you write the topic or paste the script, pick the voice and captions, and a narrated video is cut from licensed stock clips, a new clip under every sentence, usually in a few minutes.

Stock-footage videos use no credits: they are unlimited on every plan, within a daily fair-use limit of 10, 15, 40 or 100 videos, and run as long as your plan allows.

Text to video in other languages

Write in your own language: the studio replies in the language you write in, and narrates in any of 37 languages, from English, Spanish and Hindi to Arabic, Japanese and Indonesian. Each language is spoken at its own measured pace, so a 60-second script stays about 60 seconds in German or Turkish.

A finished video can also be made again in English, Turkish, German, Spanish or French, or with other opening hooks to test which one holds viewers longer.

What do YouTube's rules say about text to video AI?

YouTube asks you to disclose AI-generated or altered content that seems realistic, using the AI use setting when you upload. A generated scene of a real place or a realistic event needs it; clearly unrealistic content, animation and AI help with the script, title or captions do not. Since May 2026 YouTube labels a video itself when it detects significant photorealistic AI use that was not disclosed, and it says a label alone does not change recommendations or eligibility to earn.

To earn, the channel must be original: YouTube's monetization policies exclude inauthentic content that is mass-produced, generic or repetitive, including AI content made from generic templates. In the EU, Article 50 of the AI Act has applied since 2 August 2026: AI providers must add machine-readable marks to generated content, and people who publish deepfakes must say so.

Where text to video AI still falls short

A generated scene is an interpretation of your words, not a recording. Lettering inside the picture often comes out wrong, fast or complicated hand movements can look odd, a real place is imagined rather than shown, and clips of about six seconds mean action is told in cuts. A talking scene needs a clear, front-facing character, and FacelessCast does not clone real voices.

The way around most of it is to look before you pay: the free storyboard shows every scene, and after the render you can change one scene and pay for that scene only.

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