Build a 40-second mini-documentary around one question, one piece of evidence and one conclusion. At a planning pace of 120 spoken words per minute, 40 seconds gives you about 80 words before pauses. Treat that as a drafting budget, then time the actual voice and let the evidence shape the edit.
What belongs in a mini-documentary?
A mini-documentary is a short factual story built around an observation or question. Choose a subject small enough to explain without hiding essential context: how an object is made, why a local sign changed or what a before-and-after comparison reveals. Gather the relevant images and sources before drafting. A cinematic voice does not make an unsupported claim documentary evidence.
How do you write a script that fits?
Use a question, context, evidence and conclusion. Read the script aloud and cut repeated setup first. Reserve pauses for an image that needs inspection. Do not speed up the voice just to fit an oversized script. If the narration requires definitions, a date and several exceptions, narrow the question or make a longer video.
- Write the conclusion in one sentence.
- List the images that support it.
- Draft the question and only the necessary context.
- Time a spoken read and leave breathing room.
- Remove any claim you cannot substantiate.
How do you separate evidence from illustration?
Label reconstructions and illustrative footage clearly. A stock street scene does not prove that an event occurred there. Where realistic synthetic imagery could mislead viewers, consult the platform disclosure requirements. YouTube provides specific guidance for altered or synthetic material. Keep your source notes outside the video as well so you can correct a claim later.
The story behind a repaired chair
Illustrative storyboard for Story in 40s: show a damaged joint, explain why it moves, show the repair and compare the result. The budget is 6 + 8 + 18 + 8 = 40 seconds. Upload material you own, draft the narration in Studio and verify that every visual belongs to the event described.
| Story beat / check | Allocation / criterion |
|---|---|
| Question | 6 s |
| Context | 8 s |
| Evidence | 18 s |
| Conclusion | 8 s |
Frequently asked questions
Is 40 seconds a platform limit?
No. It is the editorial constraint used in this guide and the name of a Studio format.
How many words should I write?
Use about 80 words as a planning example at 120 words per minute, then time the actual read.
Can I use historical photos?
Check the rights and provenance of each image. Age alone does not establish permission.