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The maths explainer studio

Type a topic. Get a finished, narrated video.

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  1. 02Themes

    7 packs. Or every dial, yours.

    A theme is a palette, a typeface, three stroke weights, a background, a voice and a pace. Change one and every future video changes with it.

    • PARSEC.
    • DOODLE.
    • SKETCH.
    • RULER.
    • COMPASS.
    • CALIPER.
    • DATUM.
    • +
      Yours

  2. 03The run sheet

    Describe it. Leave it. Collect it.

    A topic and a level go in. Script, narration, animation, checks and encode all run on the render farm, and the finished film arrives by email.

    Run sheet03 steps
    1. Step 01: Describe it≈ 30 s of typing

      A topic and who it is for. You never describe the visuals; the theme owns those.

    2. Step 02: Leave itunattended · emailed

      Scripted, narrated, animated, checked against nine gates, rendered. Close the tab; we email you.

    3. Step 03: Collect itMP4 · SRT · chapters

      If the render fails your minutes come back. You are never billed for a video you did not get.

  3. 04Delivery

    What lands in your inbox.

    A finished file with chapter marks and a share link, plus captions and a subtitle track when it is narrated.

    Specification

    Output
    MP4 · H.264
    Resolution
    720p / 1080p / 4K
    Length
    1 – 10 min
    Sound
    Silent · voice · voice + music
    Captions
    Optional · burnt-in + SRT
    On failure
    Minutes returned
Every frame drawn for you
  • INFLECTION · x = 1/√2f(x) = e−x²The normal distributionDATUMDATUM.SUPPORT…and the area underneath is exactly √π.
    1920 × 108003:42JetBrains Mono 46pt#FFB63D
    INFLECTION · x = 1/√2f(x) = e−x²The normal distributionDATUMDATUM.SUPPORT…and the area underneath is exactly √π.
    Frame
    1920 × 1080
    Length
    03:42
    Accent
    #FFB63D
    Set in
    JetBrains Mono 46pt

01The output

A frame, dimensioned.

Drawn live from DATUM.'s own tokens: the same palette, type and stroke weights the renderer paints with.

  • 01Every frame drawn for your topic
  • 02Chapters and a share link
  • 03Nine gates before delivery
  • 04Failed renders refunded

Examples

Two films, each from one sentence.

A topic and an audience went in. Nothing was animated or narrated by hand. Press play and judge the output itself.

The run sheet

Nine stages. Nine gates. One standard.

A topic goes in; a finished film comes out. Here is every stage it passes through, and the checks that stop a bad frame before you ever see it.

the full run · nothing hidden

  1. 00Queued

    Jobs start in the order they arrive, and your place in the line is always visible.

  2. 01Claimed

    A renderer picks up the job and starts work.

  3. 02Scripting

    The narration and the scene code are written for the topic and the level it is aimed at.

  4. 03Voicing

    For a narrated film, the voice is synthesised. A gate checks every word will be pronounced correctly before a second of audio is made.

  5. 04Animating

    Every scene is built and rendered once for review before the final pass.

  6. 05Checking

    Nine automated gates: caption safe areas, contrast floors, narration sync, chapter boundaries. A cut that fails one stops there instead of shipping.

  7. 06Rendering

    The final encode at the resolution you chose: 720p, 1080p or 4K.

  8. 07Packaging

    Chapter marks placed, captions burnt in if you asked for them, a share link minted.

  9. 08Done

    Emailed to you. Watch it, download it, send the link.

If a render fails

Your minutes come back automatically, from the same ledger that charged them: before you have to ask. You are never billed for a video you did not get.

The script

Every film starts as a script.

The narration, its timings and the chapter map for the whole arc are written first: pitched to the topic and the level it is aimed at. The renderer only paints what the script already decided.

Narration · opening

  1. 00:00.0A determinant is not a formula to memorise.
  2. 00:03.2It is the factor by which a matrix scales area.
  3. 00:07.6Take the unit square, and apply the transformation.
  4. 00:11.9Whatever area comes out the other side is the determinant.
  5. 00:16.4Negative means the plane was flipped on the way through.

Verbatim from the film’s own caption track.

The title card of the film “What a determinant actually measures”, set in DATUM's drawing-office palette.

The chapter map

  1. 00:00Cold open
  2. 00:12The unit square
  3. 00:48Applying the transformation
  4. 01:34Why the sign matters
  5. 02:21Three dimensions, same idea
  6. 03:05What it means when it is zero

Themes

7 packs. Or every dial, yours.

Press a pack and the frame is redrawn from its real tokens: the same palette, type, stroke weights and voice the renderer paints with. Then take any of them apart in the playground.

INFLECTION · x = 1/√2f(x) = e−x²The normal distributionDATUMDATUM.SUPPORT…and the area underneath is exactly √π.

The pack

Voice
af_heart · 185 wpm (estimated)
Pace
1.00×
Strokes
1.5 / 2.5 / 4 pt
Open the playgroundSee pricing

The playground is free and unlimited, and a free account gets one free short video a month.

Changes apply to new videos; existing videos keep the look they were made with.

Pricing

Up to a set number of minutes a month. Every video uses a few.

Each video uses the length of its band — up to 3, 5 or 10 minutes — so your plan's minutes are the most video you can make, in any mix. You pick short, medium or long; the agent picks the exact length inside the band. Nothing is charged until you press render, and a failed render is refunded by the same ledger that charged it.

Starter

Was $25$20/ month

Launch price · 20% off

Videos up to 5 minutes, 720p. For personal use.

Up to 45 minutes / month

Up to 15 short or 9 medium videos a month

  • Short and medium videos, up to 5 minutes
  • 720p
  • EngramLabz wordmark (not included)
  • Standard queue (not included)
  • Personal use (not included)
Choose Starter

Creator

Recommended

Was $50$40/ month

Launch price · 20% off

Videos up to 10 minutes, 1080p. Publish them anywhere.

Up to 120 minutes / month

Up to 40 short, 24 medium or 12 long videos a month

  • Short, medium and long videos, up to 10 minutes
  • 720p, 1080p
  • Your own wordmark on the video
  • Standard queue (not included)
  • Commercial use
Choose Creator

Studio

Was $75$60/ month

Launch price · 20% off

Most minutes per dollar

Videos up to 10 minutes, 4K and the priority queue.

Up to 200 minutes / month

Up to 66 short, 40 medium or 20 long videos a month

  • Short, medium and long videos, up to 10 minutes
  • 720p, 1080p, 4K
  • Your own wordmark on the video
  • Priority in the render queue
  • Commercial use
Choose Studio

Free 1 free video a month, up to 3 minutes, 720p. Sign up and confirm your email to use it; free videos wait behind paid ones in the queue.

Start free

Need more? Add minutes to your plan: 20 minutes for $9, 60 minutes for $24, 120 minutes for $45. One-time, and they never expire.

Every length and resolution, by plan

Before you start

The questions the page has not answered yet.

plain answers · no asterisks

Do I need animation or editing skills?

None. You type a topic and say who it is for; the theme owns colour, type, motion and voice. The film comes out finished.

What happens if a render fails?

Your minutes come back automatically, from the same ledger that charged them, and the reason is written down in plain language. You are never billed for a video you did not get.

Can I edit the video afterwards?

Not yet: the editor is coming soon. To change a finished film, you order a new film that builds on it, at the full price for its length.

What do I actually receive?

An MP4 (H.264) with chapter marks and a share link. It is silent unless you ask for a voice; narrated films can add burnt-in captions and an SRT subtitle track. Watch it, download it, send the link.

How do minutes work?

A plan gives up to a set number of minutes of video a month. You pick short, medium or long; the agent picks the exact length inside the band. Each video uses the length of its band — up to 3, 5 or 10 minutes — so your plan's minutes are the most video you can make, in any mix. Starter: up to 45 minutes of video a month — up to 15 short or 9 medium videos. Creator: up to 120 minutes of video a month — up to 40 short, 24 medium or 12 long videos. Studio: up to 200 minutes of video a month — up to 66 short, 40 medium or 20 long videos. Plan minutes refresh each month and expire with the period. Need more? Add minutes to your plan — 20, 60 or 120 minutes, never expire. Top-ups are for subscribers and are used under your plan's limits.

Is there a free video?

Yes: 1 free video a month, up to 3 minutes, 720p, on a free account once your email is confirmed. Free videos wait behind paid ones in the queue, and a limited number are made each day.

Can I use my own look?

Yes. The playground is free: duplicate any of the 7 packs and dial the palette, type, stroke weights, background, voice and pace. Your own wordmark on the film is the one thing that waits for the Creator plan.

Make the explainer you wish existed.

Type a topic. Pick who it is for. The studio writes, voices, animates and delivers the finished film.

Start freeTry the playground

The playground is free, and so is your first short video each month.