Long-form AI video generator: long AI videos up to 5 minutes
Every AI video model has a hard limit on clip length — usually somewhere between 4 and 20 seconds. That is fine for a meme, but not for a story, an explainer or a YouTube video. ShortsMachine gets around the limit the way a film editor would: it plans the video as a sequence of scenes, generates a clip for each, and cuts them together with continuous narration and captions.
The result is a single video up to 5 minutes long that still looks like one piece, because every scene shares the same characters, setting and style.
How long videos are built
- 1
Plan the scenes
For a 3-minute video on a 10-second model, the script writer plans about 18 scenes, each with enough narration to fill it.
- 2
Keep the look consistent
A one-line visual style guide (characters, clothes, palette, lighting, camera) is applied to every scene’s image and clip.
- 3
Fit clips to the voice
Each scene lasts as long as its narration; if a clip is shorter, its last frame is held so the voice never gets cut off.
- 4
Stitch and caption
All scenes are normalised to the same size and frame rate, joined, and captioned in short readable chunks.
Which model for long videos?
Longer videos multiply the cost per second, so model choice matters more. Models with longer clips (HeyGen, Grok Imagine, Kling, Wan 2.7: up to 15 seconds; FLUX 3 Max: up to 20) need fewer scenes. Cheap models make long videos affordable for daily uploads; premium models are best kept for flagship videos.
| Model | Credits per second of clip | Credits per finished minute | Minutes on Starter (200) | Minutes on Premium (2,000) |
|---|---|---|---|---|
| HeyGen Video 1 | 1 | ~72 | 2.8 | 27.8 |
| Wan 2.2 Fast | 1 | ~84 | 2.4 | 23.8 |
| Pruna P-Video | 2 | ~132 | 1.5 | 15.2 |
| Grok Imagine 1.5 Lite | 3 | ~192 | 1.0 | 10.4 |
| FLUX 3 Max | 4 | ~252 | 0.8 | 7.9 |
| Grok Video Pro | 5 | ~312 | 0.6 | 6.4 |
| MiniMax H3 | 6 | ~384 | 0.5 | 5.2 |
| Kling 3.0 | 8 | ~492 | 0.4 | 4.1 |
| Seedance 2.0 Mini | 9 | ~552 | 0.4 | 3.6 |
| Wan 2.7 | 10 | ~612 | 0.3 | 3.3 |
| Wan 3.0 | 14 | ~864 | 0.2 | 2.3 |
Per-minute figures include the scene images and voiceover (Flux images). Estimates; you are charged for what is actually generated.
Good uses for 2–5 minute AI videos
- Story channels: horror, history, mythology and true-story narrations.
- Explainers and listicles: "10 facts about…", "How X works".
- YouTube (16:9) videos that need more depth than a Short.
- Course and training snippets where narration carries the content.
Frequently asked questions
How do I make a long AI video?
Choose a length between 1 and 5 minutes when you create a video. ShortsMachine plans the scenes, generates a clip for each one, times them to the narration and stitches them into one long-form video automatically.
Why not just ask a model for a 5-minute clip?
No current model generates minutes of coherent video in one pass, and very long single generations tend to drift. Scene-by-scene generation with a shared style guide gives better quality and control.
How long does a 5-minute video take?
Usually 10–30 minutes, depending on the model and how busy the providers are. You can close the page; progress is saved and the video appears in your library when done.
What if one scene fails?
If a model refuses or fails a scene, that scene uses a slow zoom on its still image instead, so the video still completes. You are not charged video credits for scenes that fell back.
Make your first video in a few minutes
Type an idea and ShortsMachine writes the script, generates every scene, adds a voiceover and captions, and stitches it into one video — up to 5 minutes long.
Start your 3-day free trial