AI models generate in 5 or 10 second chunks — so a 3-minute video isn't one render, it's dozens. Work out how many clips, frames and hours you're actually signing up for before you start.
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Generation time varies by model, queue load and resolution — 60–180 s per clip is typical in 2026. Adjust to match what you actually see.
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Every current model caps a single generation at a handful of seconds. A 3-minute video at 5 seconds per clip means 36 separate generations — each needing its own prompt, its own retries, and its own place in the edit. That's why most "AI-made" long videos you see are actually illustrated slideshows or stock-footage assemblies: nobody is rendering 36 coherent shots by hand.
Two ways around it: use a tool that assembles the whole video for you, or use a format where each scene is a still image with motion applied — the approach behind our own 7-minute video that cost $0. Price out the raw-generation route in the cost calculator, and plan the script length with the script timer.
Most models generate 5-second clips by default. Veo 3.1 extends to 8 seconds, Sora 2 and Kling 3.0 reach 10, and some extended modes stretch to 15–20 seconds — but coherence usually degrades past 10 seconds, so many creators stay at 5 and cut more often.
At 5 seconds per clip, 12 clips — but budget 3× that in generations because of retries, so roughly 36 renders for one finished minute.
Usually not — models bill per second of output, not per frame. Frame rate mainly affects file size and how smooth motion looks. Check export size in the file size calculator.