AI YouTube Video Generator: Long-Form and Shorts From One Message

What an AI video generator for YouTube needs to do

An AI video generator for YouTube turns a topic or script into an upload-ready video: 16:9 for regular uploads, 9:16 for Shorts, with narration, visuals, captions, chapters and a thumbnail. Many AI video tools make a few seconds of footage at a time. A YouTube video runs for minutes and needs structure, so the whole runtime has to be planned.

That gap decides which tool fits. Clip generators make impressive 5 to 10 second shots but leave you to write, narrate, edit and caption a 10-minute video yourself. A YouTube generator starts one step earlier: it turns a topic into a script with a hook and chapters, then produces everything downstream.

The checklist below is what YouTube itself rewards or requires, and the rest of this page shows how each item is handled:

• Correct aspect ratio: 16:9 for regular videos, 9:16 for Shorts
• A script with a hook in the first seconds and a clear structure
• Chapters for long videos: at least three timestamps, the first at 00:00, each chapter at least 10 seconds long
• Captions, burned in for Shorts and as a separate .srt or .vtt track for long-form
• A 16:9 thumbnail, title options, a description and tags
• Originality that holds up under YouTube's inauthentic-content review

AI YouTube video generation, step by step

AI YouTube video generation is the whole job, not only the moving pictures. A video model on its own gives you a few seconds of footage; a YouTube video also needs a script with a hook, a voice, a picture for every sentence, captions, music, a thumbnail and metadata. A YouTube video generator does all of it in one pass.

In FacelessCast it goes like this: you describe the video in the chat; the agent asks only what is missing and shows the price in credits; after you accept, the script is written at the length you asked, the voice is recorded in any of 37 languages, and each scene is made. With AI video every scene is a generated clip that moves, and presenters and characters talk with their lips in sync. The captions follow the real speech timing, and the finished MP4 comes with its cover and publish kit.

• A Short with stock footage is usually ready in one to three minutes.
• AI video takes about ten minutes per minute of video: a 30-second Short about five, a 10-minute video one to two hours.
• The price is shown before anything starts: AI video uses credits per scene, stock footage uses none.

What FacelessCast produces for YouTube

FacelessCast works as a faceless YouTube video creator: from a typed topic it generates the script, AI voice, per-sentence visuals, word-synced subtitles, music and an optional logo intro and outro. It renders 16:9, 9:16 or 1:1 at up to 4K and up to 20 minutes, and adds a publish kit with titles, description, tags, chapters and a thumbnail.

Here is the full list, including the plan limits, so you can check it against your channel's format before signing up:

• Input: a topic, optionally with tone, length and target audience; or your own edited script in draft mode
• Script: AI-written with an opening hook; long-form scripts are split into chapters
• Voice: AI narration in 37 languages
• Visuals: licensed cinematic stock footage, one clip per sentence, or AI video where every scene is a generated clip that moves
• Motion and speech: AI video clips of about six seconds at 20 credits each at standard quality, and lip-synced talking scenes at 40
• Subtitles: word-synced, in classic, word-highlight or bold style
• Formats: 16:9 (YouTube), 9:16 (Shorts, TikTok, Reels), 1:1 (feeds)
• Resolution: up to 1080p on Starter, up to 1440p on Creator, up to 4K on Pro and Studio
• Length per video: up to 3 minutes on Starter, 5 on Creator, 10 on Pro, 20 on Studio
• Publish kit: three title options, description, tags, hashtags, chapter timestamps, a thumbnail and .srt/.vtt captions
• Scale: batch up to 30 topics at once; series with consistent characters; autopilot schedule with an approval gate

Long-form YouTube videos up to 20 minutes, with chapters

For long-form YouTube, FacelessCast writes a chaptered script, narrates it and renders a 16:9 video of up to 20 minutes, then gives you the chapter timestamps. Pasted into the description, they become chapter markers on YouTube's progress bar. Pro covers videos up to 10 minutes and Studio up to 20.

Chapters are not decoration. YouTube only shows them when the description lists at least three timestamps in ascending order, the first at 00:00, and every chapter is at least 10 seconds long. A script written in chapters from the start meets that easily. Adding timestamps afterwards to a video that was never structured usually gives you vague chapter titles and uneven sections.

The timing also holds. The script length targets the voice's real speaking rate, so a video requested at 12 minutes comes out close to 12 minutes, not 7 or 16. That matters when you plan mid-roll ads, which YouTube allows on videos of 8 minutes or longer. A new visual under every sentence keeps a 15-minute video from feeling static.

YouTube Shorts: an AI video generator in 9:16

As an AI video generator for YouTube Shorts, FacelessCast renders a vertical 9:16 video with a hook in the first line, word-synced captions burned in and music underneath, at 1080x1920. A short video is ready in a few minutes. YouTube treats vertical or square videos up to 3 minutes long as Shorts.

Shorts reward a different script from long-form: one idea, no preamble, a payoff before the viewer swipes. The generator writes each Short as its own script instead of cropping a horizontal video. That keeps the framing right, because footage is chosen for vertical, and it keeps each upload original, which matters for the monetization rules covered below.

Each Short also gets its own publish kit, so the description, tags and hashtags are written for that clip rather than copied from the long video.

A common setup: one 10-minute 16:9 video a week with chapters, plus three to five Shorts, each built on one chapter's angle. On stock footage none of it uses credits, and it fits Pro, the plan that allows 10-minute videos.

Thumbnails, subtitles and the publish kit

Every FacelessCast video comes with a publish kit: three title options, a description, tags, hashtags, chapter timestamps for long-form, a 16:9 thumbnail (the auto cover) and captions as .srt or .vtt. You paste it into YouTube Studio. Covers, subtitles and the kit are included in every plan and cost no extra credits.

Captions do two jobs on YouTube. Burned-in subtitles keep muted viewers watching, which matters most on Shorts. A separate .srt or .vtt upload gives YouTube an accurate caption track, where auto-captions can get names and numbers wrong.

Treat the three titles and the auto cover as drafts. They decide whether anyone clicks, so rewrite the strongest title in your own words and compare the cover with the thumbnails already ranking for your topic. FacelessCast does not upload to YouTube for you; you keep control of the channel, the publish time and the disclosure settings.

Monetization: staying inside YouTube's AI content rules

YouTube allows AI-made videos and faceless channels in the Partner Program. What it refuses to monetize is inauthentic content: mass-produced or repetitive videos with little variation. It also requires a disclosure for realistic altered or synthetic content. AI scripts, AI voices and AI video are fine when the channel adds original value.

YouTube renamed its repetitious-content policy to inauthentic content on 15 July 2025, to make clear it covers mass-produced and repetitive uploads. The reused-content policy, which covers clips, compilations and reactions, did not change. In practice reviewers look for author input: a point of view, research, a structure that is not copy-paste across thirty uploads.

The disclosure rule is narrower than people fear. You turn on the altered or synthetic content setting in YouTube Studio when a video shows something realistic that did not happen: a real person saying words they never said, or a real place shown in an event that never took place. Clearly animated or illustrated scenes and AI-written scripts do not need the label. Stock footage used as illustration does not either, as long as the video does not pass it off as a record of a real event.

FacelessCast is built around the original side of that line. You can work draft first, reading and editing the script and scene plan before anything renders, which is where your angle goes in. Do not run the same template with swapped nouns. No generator can guarantee monetization or income.

Pricing: what a YouTube channel actually costs

FacelessCast plans are Starter $10 (videos up to 3 minutes, up to 1080p), Creator $19 (videos up to 5 minutes, up to 1440p), Pro $49 (10-minute videos, 4K) and Studio $99 (20-minute videos) a month; there is no free plan. Stock-footage videos are unlimited on every plan, within a daily fair-use limit of 10, 15, 40 or 100 videos.

Credits pay only for AI video and 4K: 20 per AI video clip at standard quality, 40 per talking scene and 10 per minute of 4K. Starter includes 400 credits a month, Creator 800, Pro 2,000 and Studio 4,000, and credit packs, with or without a plan, start at $5 for 100. Here is what typical schedules come to on this AI video generator for YouTube. These are estimates, not promises:

• Four 5-minute videos plus a daily Short, on stock footage: no credits, Creator
• One 10-minute video a week plus 12 Shorts, on stock footage: no credits, Pro (Creator caps videos at 5 minutes)
• Eight 10-minute videos a month in 4K: 800 credits for the 4K, Pro
• Eight 20-minute stock-footage documentaries a month: no credits, Studio
• Eight 30-second AI video Shorts a month: about 1,120 credits at standard quality, Pro
• Yearly billing, 20% off: Starter $96, Creator $182, Pro $470, Studio $950 a year

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