Kids IT Lab No.7 | AI Development & Use

The Era of AI Video Creation Is Here

Type "a 10-second side-angle video of a puppy walking through Shibuya in the evening" and you get back a cinematic clip that looks like the real thing. AI video tools like OpenAI's "Sora" and Google's "Veo" have rapidly moved from research curiosity to practical reality. This article explains how video-generating AI works, the major services available, what's possible and what's still limited, and what to watch out for — with diagrams aimed at middle and high schoolers.

What Is AI Video Generation?

AI video generation is a technology where AI creates brand-new short video clips — typically a few seconds to about a minute — from a text prompt. The concept is the same as image generation: it learns from huge numbers of text-video pairs and builds the video gradually from noise. The key difference is that "time" is added. Even one second of video requires dozens of frames, and those frames have to flow naturally into each other.

OpenAI's "Sora," announced in 2024, made waves for generating high-quality video from text descriptions. Google's "Veo," Adobe, Meta, and others have also released video-generation AI, and between 2025 and 2026, services accessible to everyday users have multiplied. Length limits and usage conditions change frequently, so check the official info before using any service.

How It Differs from Image Generation

While an image-generation AI creates "one picture," a video-generation AI creates "many pictures connected across time." A 10-second video at 24fps (24 frames per second) requires 240 individual frames. AI doesn't create them separately — it designs all frames together so that the characters, backgrounds, and movement of light connect coherently across time.

Frame Count Difference: This Is Why Video Is Harder Source: Standard video spec (24fps) / OpenAI Sora technical overview / editorial team measurements 1 image 1 frame DALL-E etc. ~10 sec to generate 5-second video 120 frames Tens of seconds to 2 min to generate 10-second video 240 frames 1–5 min to generate 1-minute video (Sora max) 1,440 frames 0 frames 720 frames 1,440 frames ★ A 1-minute video = 1,440 frames. AI must design the motion, objects, and lighting of all frames together — harder than images
Fig. 1: A 1-minute video equals 1,440 images. AI has to design "natural connections between frames" all at once — that's why it's more advanced than image generation.

It's still not perfect. People's feet can disappear mid-walk, text garbles, the number of objects changes — "breakdowns" do happen. Even so, compared to just a few years ago, the technology has already reached a level usable in advertising and short-video production.

Major Video Generation Services

As of 2026, here are the 8 main AI video tools accessible to middle and high schoolers. Each has different strengths.

Top 8 AI Video Generation Services Compared Source: Official pricing pages for each service (2025–2026) / editorial team trial usage Service Monthly Max length Commercial Best for Sora (OpenAI) ¥2,400+ 1 min ○ Top quality Veo (Google) ¥3,000+ 1 min ○ YouTube integration Runway (Gen-3) ¥2,200+ 10–16 sec ○ Pro standard / 4K Pika Free–¥1,500 5–10 sec △ Short social media clips Luma Dream Machine Free–¥4,500 5 sec △ Free tier available Kling (Kuaishou) Free–¥1,500 10 sec ○ High res / free tier CapCut (ByteDance) Free Short ○ Edit + generate / free Canva Video Free–¥1,800 Short ◎ Slides / class use ★ For teens: start with Luma Dream Machine (5-sec free) or CapCut (free, editing built in)
Fig. 2: 5 of the 8 services have free tiers. Start with Luma Dream Machine (5 seconds free) or CapCut.

For free casual exploration, try Luma Dream Machine or CapCut. For serious creative work, Runway is the professional standard. For class presentations, Canva's AI video feature is fastest — you can drop clips directly into slides you're already building.

When starting out, decide the purpose first to avoid confusion. A science project explainer video, a school festival promo, a club introduction — the needed length, aspect ratio, subtitles, and audio all differ. Before asking AI to generate video, sketching even a simple 3-shot storyboard makes your prompts much more specific.

What's Possible Now — and What Isn't Yet

Here's what AI video generation can realistically do today.

  • Creating short clips (5–15 seconds) for social media
  • Short atmospheric footage to insert into class presentations
  • Rough concept videos for advertising or product pitches (used by professionals before the final shoot)
  • Music-video-style imagery (individuals making visuals to match a song)
  • Animating still photos (adding a few seconds of motion to a photo)

What AI still struggles with: "complex dialogue-driven storylines," "reproducing the same character across different scenes," "displaying accurate text or numbers," "fine details like fingertips and hair." Breakdowns also increase in fast-action sequences.

Watch Out for These Pitfalls

3 important cautions for AI video generation
  • Don't generate video of real celebrities or your friends without permission. High risk of likeness violations and deepfakes
  • Don't post AI-generated video on social media without disclosing it. "Convincingly real fake footage" is already a source of viral misinformation
  • For commercial use or monetization, always read each service's terms. Most free plans prohibit commercial use

Video is even more likely than still images to be interpreted as "something that actually happened" — the potential impact is larger. Always label AI-generated video as "AI-generated" in the caption. That's a piece of digital etiquette worth building now.

How Will This Help in the Future?

AI video generation is reshaping advertising, marketing, film production, and educational content. It lets you quickly test initial concepts, storyboards, background footage, and short explanatory clips, which accelerates how fast you can compare ideas. Building video-creation experience in middle or high school means that if you later choose a creative or film-related career, the instinct to use AI as a production assistant will already be natural.

At the same time, video is a powerful medium — and that means greater responsibility. Don't resemble real people, don't make it look like news footage, always disclose that it's AI-generated. People who follow these rules are the ones who can be trusted with a camera.

Things You Can Do Today

Try AI video generation in 3 steps
  1. Talk with a parent or guardian and sign up for a free video AI like Luma Dream Machine or CapCut
  2. Use a prompt with "subject, location, motion, atmosphere" and generate 3 variations of a 5-second clip
  3. Add "AI-generated" to the caption of any video you produce, and share it only with family or close friends for now

Summary

AI video generation has reached the point where short clips can be created from text alone. Major services like Sora, Veo, and Runway have opened to the public, and practical use in social media, advertising, and educational content has begun. Never generate video of real people without permission, always disclose AI generation, and read the terms before commercial use. Follow these three rules and your expressive range expands enormously.

Check What is the biggest caution with AI video?

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