How to make a 30-minute documentary with AI (chapters, footage, and the afternoon plan)

A concrete plan for a 30-minute AI-assisted documentary: script length, chapter structure, how much archive you need, where generated footage is allowed, and the timeline from topic to export.

Thirty minutes is where "AI video" stops being a toy. A clip generator can't get there; an assembler gets there looking like a slideshow. Here's how to make a real 30-minute documentary with AI doing the heavy lifting.

The numbers for 30 minutes

• Script: 3,800–4,200 words at documentary pace.
• Structure: cold open (1 min), question (1 min), six chapters (4 min each), turn (2 min), landing (1–2 min).
• Assets: roughly 250–350 pictures, clips and maps at documentary pacing.
• Maps: 6–12, one or two per chapter.
• Music: two or three tracks, edited to the structure.

By hand: 60–120 hours. See how long it takes to edit a documentary.

Step 1: Pick a topic with a 30-minute archive

Thirty minutes needs depth. A single battle, a company's rise, a scientific discovery with a long paper trail. Before writing, spend an hour in the Internet Archive, Wikimedia Commons and a national archive counting usable assets. Under a hundred, the topic is a 12-minute film.

Step 2: Write in chapters

Draft chapter by chapter with an LLM using the structured prompt in best AI script writers for documentaries, then rewrite each for the ear. Every chapter needs its own small shape and a last line that raises the next. Verify every fact.

Step 3: Choose a template that holds at length

A 30-minute film needs pace variation more than a short one: long, slow chapters alternating with faster ones, music that changes register, chapter cards the audience can rest on. In Glisse, choose a template from an editor whose long films you like; the template carries their pacing and chapter rhythm and adapts to your script length.

Step 4: Generate, then review chapter by chapter

Let the AI source licensed archive per line, build the maps, perform the narration and cut. Then review one chapter at a time, requesting changes in plain language: hold a photograph longer, swap a clip, drop the music under a line. Thirty minutes of review is easier as six five-minute films.

Step 5: Gaps

Where the archive has nothing, a generated shot from Veo, Runway or Kling, labelled, imported into the edit. Keep it to a few percent.

Step 6: Export and shorts

Export at 1080p or 4K. Cut the cold open and the turn into shorts; a 30-minute film also gives you a chapter that works as a standalone 5-minute video.

The afternoon plan

• Morning: topic check, script drafts and rewrite (chapters one to six).
• Early afternoon: template, generate, first watch.
• Late afternoon: chapter reviews, gap shots, export.

A working day for 30 minutes, with a real editor's taste in every chapter.

FAQ

Can AI make a 30-minute documentary?

Yes, with a workflow that supplies real footage, maps, performed narration and an editor's structure. Glisse produces it from a script; clip generators can't.

How many words is a 30-minute documentary script?

About 3,800 to 4,200 words, less if maps and footage carry long passages.

How much archive footage do I need for 30 minutes?

Roughly 250–350 assets at documentary pacing. Check the archive before committing to the length.