History Explainer — a historical event or figure → a cinematic documentary short

A finished reel = vertical 9:16 + voiceover + music + ~45–90s. Pass `aspect_ratio: "9:16"` to `generate_project` (it now threads to every scene), set the i2v `duration` to 8–15s on EVERY scene and animate all of them (default ~5s + skipped scenes = the "38s instead of 90s" bug), add `inworld-tts` narration (not the chatterbox default voice) + `music`, and mux the bed with `audio_fill:"loop"` so the score covers the whole reel (not just the first part). A silent landscape montage — or one whose music cuts out two-thirds in — is a draft, not a deliverable. See the `short-form-video` skill's *definition of done*.

gpt-imagemai-image-2.5recraft-v4flux-devkontext-editseedance-i2vltx-q-i2vinworld-ttsmusichyperframes-lower-thirdffmpeg-burn-subtitlesffmpeg-concatffmpeg-muxffmpeg-export

Output

Date/fact hook
5–8 period-accurate scenes
Authoritative narrator
Epic documentary score
Date/place chyrons
9:16 MP4

Time

1 topic → 45–90s vertical short in ~3–6 min

Budget

$0.40–$3.00 per short (5–8 scene images/clips + TTS + music + finishing)

Reliability

3.7

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RUNNER

Create and edit images and video with your agent.

npm install -g @livepeer/runner