All nichesTrue Crime

AI true crime video generator

True crime is the oldest faceless niche on short-form and the least forgiving. The audience has heard thousands of cases, so it does not reward drama — it rewards a detail it has not heard before, delivered without theatrics. A channel lives or dies on the first four seconds, which is where the anomaly goes: the shoe left on the porch, the call that came in twice, the timestamp that does not fit.

The production side is why so many of these channels are faceless. There is nothing to film. A case is a script, a sequence of illustrated moments and a narrator — which is exactly the shape of a Castmint render.

What the format actually looks like

  • Length: 60 to 180 secondsA case needs setup, escalation and a resolution. Thirty seconds gets you a hook with no landing, and viewers punish that in the comments. Two minutes is the sweet spot: roughly a dozen scenes, each one beat of the timeline.
  • Open on the anomaly, not the summaryDo not start with "in 1994, in a small town in Ohio". Start with the fact that should not be there, then go back and explain it. The summary is what the viewer scrolls past; the anomaly is what makes them wait for the explanation.
  • Flat narration beats dramatic narrationThe material carries the tension, so the read should not. A deep, even, unhurried voice reads as authority; a theatrical one reads as a podcast advert and gets scrolled. This is the one niche where the calmest voice in the picker wins.
  • Stay inside the public recordNames, dates and places on screen are what makes the format feel like a case file — and the reason accuracy matters more here than anywhere else. Report what was published, do not invent confessions or motives, and remember Castmint has no face swap and will not accept a real person's photograph without your attestation that you may use their likeness. Our Acceptable Use Policy is the boundary, not a suggestion.

How to make one in Castmint

This is the prompt-to-video flow: your prompt becomes a script, the script is split into scenes, an image is generated per scene, a voice reads the narration and the captions are cut to the measured timing of that recording. It all composites into one MP4 you download and own.

Settings to start from

Visual styleDocumentary
VoiceEcho — Deep, calm
Length2 minutes
Aspect ratio9:16
Music bedDramatic
Cost per video45 credits

A prompt you can paste

A 2-minute true crime short about an unsolved 1970s disappearance from a roadside motel. Open on the detail that never made sense — the room key found two miles away. Documentary pacing, one beat per scene, dates and place names in the captions, no speculation about who did it.

Documentary is the only style in the picker that produces the grainy, evidential look the niche expects — cinematic renders too polished and reads as fiction. Echo is the deepest of the standard voices and stays flat under dramatic material. The dramatic music bed is tense low strings, which sits under narration instead of competing with it. A 2-minute render costs 40 credits, plus 5 for the music bed.

Accounts working in this niche

Real, live True Crime accounts we watch, with our own note on what makes each one recognisable. Study the structure and the pacing — then make something original. Copying another creator's video is not a strategy and it is not allowed under our Acceptable Use Policy.

  • USA True Story@usa.true.storyTikTok
    2D cartoon animation with bold outlines (adult-animation look), documentary narration over real American survival and crime stories
  • Scralinee@scralineeofcTikTok
    breaking-news format: captioned real-footage clips, red banner headlines, urgent Spanish-language narration, fast cuts

True Crime video questions

Can I make true crime videos about real cases?

Yes, within limits that are enforced in the product, not just written in the terms. Castmint has no face swap, and a photograph of a real person is only accepted after you confirm you may use that person's likeness — that confirmation is recorded. Prompts are screened before generation. Work from the published record, attribute where it matters, and read the Acceptable Use Policy before you build a channel on it.

How long should a true crime short be?

Sixty seconds if the case has one twist, two to three minutes if it has a timeline. Castmint prices 30, 60, 120 and 180-second videos at 10, 20, 40 and 60 credits, so the length is a budget decision as much as an editorial one.

What does one true crime video cost?

A 2-minute video is 40 credits, plus 5 if you add a generated music bed. On the free plan you get 30 credits, which covers a 60-second video with music (25 credits) — enough to see whether the pipeline suits the niche before you pay for anything.

Can I put my own footage or evidence photos in?

Castmint generates every scene image from the script; there is no footage upload for a film render. You can add image and text overlays in the editor after the render, and you can change the wording, style and position of the captions per scene.

Make your first True Crime video

Write the idea, pick the settings above, and the finished MP4 comes back a few minutes later. Every video is yours to download.

Try Castmint free

Free plan: 3 videos or 1 AI film clip, watermarked. No commitment.

Other niches

HorrorOne room, one threat, and a reveal you can hold back.MysteryRules, liminal places and endings that deliberately do not close.AI StoriesSerialised episodes with a narrator and a cliffhanger.MotivationOne idea, thirty seconds, and a hard cut on the last word.Facts & EducationOne fact per scene, fast, with the number in the first caption.HistoryOne event, one angle, chronology as the spine.Space & ScienceScale is the hook — start small, end at something incomprehensible.Reddit StoriesA flat narrator, a moral dilemma, and a verdict at the end.LuxuryRanked countdowns where the price is the punchline.AI ASMROne object, one cut, and sound the engine generates itself.AI POVFirst-person, hands in frame, one unbroken shot.

Every plan, credit cost and limit mentioned on this page is on the pricing page, and the pipeline itself is described in full on what Castmint does.