Updated June 2026
AI Video Length Guide: Choosing 4s to 60s
Pick the right duration for every platform and use case — 4s to 60s.
The right length changes how a clip performs: too long and viewers drop off, too short and the message never lands. NanoBanana AI generates videos from about 4 to 60 seconds with Google Veo 3.1, so this guide maps each duration to the platform and use case it fits best. For a deeper breakdown, see our full write-up at /blog/ai-video-duration-guide-4s-to-60s.
Step by step
1
4 seconds — loops and stingers
Ultra-short clips are perfect for looping backgrounds, logo stingers, and GIF-style reactions. They render fastest and are cheapest to iterate on while you test an idea.
2
8 seconds — hooks and single moments
Eight seconds captures one clear action or reveal. It is a strong default for a Reels or TikTok hook and for quick image-to-video animations of a photo or product.
3
15 seconds — short social stories
Fifteen seconds fits a mini narrative: setup, moment, payoff. This is a sweet spot for Instagram Reels, TikTok, and short paid social where retention still holds.
4
30 seconds — ads and explainers
Half a minute suits a product ad, a feature explainer, or a mini-tutorial. It is long enough to make a point and include a call to action without losing the viewer.
5
60 seconds — storytelling and YouTube
A full minute works for YouTube Shorts, brand stories, and detailed demos. Build it by generating shorter clips and using extension and merging for a smooth sequence.
Pro tips for better results
- When unsure, go shorter — you can extend and merge clips, but you cannot recover a viewer who has scrolled away.
- Match length to intent: awareness clips can be very short, while explainers and demos need more room.
- Render short test clips first to lock the look, then commit credits to the final length.
- For platform-specific vertical guidance, see /guides/ai-video-for-instagram-reels-tiktok.
- See the full breakdown at /blog/ai-video-duration-guide-4s-to-60s, and try durations yourself at /ai-video-generator.
Frequently asked questions
How long should an AI video be?
It depends on the platform: 8 to 15 seconds for Reels and TikTok, 30 seconds for ads and explainers, and up to 60 seconds for YouTube Shorts and storytelling. NanoBanana AI supports roughly 4 to 60 seconds.
What is the best length for a TikTok or Reel?
Around 8 to 15 seconds usually holds retention best and loops cleanly. Longer clips work when you are teaching or telling a story rather than chasing a quick hook.
Can I make a 60-second AI video?
Yes. NanoBanana AI generates up to about 60 seconds with Google Veo 3.1, and you can extend and merge shorter clips to reach that length smoothly.
Do longer videos cost more?
Longer generations use more compute, so they consume more of your credits or plan allowance. Testing with short clips first keeps costs down while you refine the idea.
Where can I read more about AI video durations?
Our full guide at /blog/ai-video-duration-guide-4s-to-60s covers every duration by platform and use case in more detail.
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