The key distinction: “video length” can mean a native model generation, a clip extended from previous footage, or several scenes assembled into one finished file. This table keeps those claims separate and links to the official documentation used on the verification date.
AI Video Length Limits at a Glance
| Tool or workflow | Documented generated clip | Longer-video method | Source |
|---|---|---|---|
| AI Long Video | One native 30-second Seedance 2.5 scene. | Two connected 30-second scenes use a final-frame handoff and are automatically assembled into one 60-second MP4. | Current product workflow |
| Runway Gen-4.5 | 2–10 seconds. | Plan and edit multiple generated shots for a longer film. | Runway Gen-4.5 documentation |
| Google Flow / Veo 3.1 | 4, 6, or 8 seconds for the documented Veo 3.1 generation modes. | Eligible 8-second Veo 3.1 videos can be extended with the supported Lite workflow. | Google Flow model help |
| Adobe Firefly Video | The Firefly video editor documentation lists a default duration of 5 seconds. | Add generated clips to the Firefly timeline and edit them into a longer sequence. | Adobe Firefly help |
| OpenAI Sora | Unavailable. The product and API have been discontinued. | No current Sora production workflow; migrate to an available tool. | OpenAI discontinuation notice |
Specifications change. Recheck the linked official source before purchasing credits, quoting a client, or building an automated workflow. Missing options are left out rather than guessed.
Native Clip Length vs Finished Delivery
Native generation
One model task produces the complete clip. This is the cleanest duration claim, but it may still require retries and creative review.
Extension
A supported tool continues an existing clip using earlier visual context. The transition and total duration depend on the provider's current implementation.
Multi-scene assembly
Several approved clips are joined into one file. This can deliver a longer runtime, but continuity, audio, pacing, and the scene boundary must be checked.
Which Duration Should You Choose?
One visual beat
Use a short clip for a hook, transition, product detail, or a single camera move. Do not overload it with multiple locations and story changes.
One focused short-form story
A half-minute can carry a hook, demonstration, and payoff in one location or one continuous action. It fits many Shorts, Reels, teasers, and product stories.
Setup plus continuation
Choose one minute when the second scene has a clear job. Write the midpoint handoff and review the joined file instead of treating 60 seconds as one oversized prompt.
Section-based editing
Build several complete sections, approve them separately, and assemble the final timeline in an external editor with captions, titles, and audio leveling.
A Practical Longer-Video Workflow
- Write the final runtime and the job of each section.
- Choose a tool based on native length, input controls, audio, aspect ratio, and the available extension or assembly method.
- Keep visible identity, setting, lighting, camera direction, and movement consistent between connected sections.
- Review every generated clip before spending more credits on the next section.
- Watch the final export with sound and verify its real duration and transition quality.
Follow the complete long AI video workflow for planning, generation, continuity review, and multi-minute editing.
Frequently Asked Questions
Which AI video generator makes the longest video?
That depends on whether you mean one native model generation, an extension feature, or a finished multi-scene delivery. AI Long Video delivers a finished 30-second native clip or a 60-second MP4 assembled from two connected 30-second scenes; the other tools in this dated comparison generally generate shorter native clips.
Is an assembled 60-second video the same as a native 60-second generation?
No. A native generation is produced in one model task. An assembled delivery combines connected scenes into one file and requires a continuity review at the join.
Can I create a video longer than 60 seconds?
Yes. Plan several approved 30- or 60-second sections, export them, and assemble the final timeline in an external editor. Check identity, motion, audio, and transitions before delivery.
Choose by delivery, not hype
Start with the Runtime Your Story Needs
Use one native 30-second scene for a focused idea, or a connected two-scene workflow when the story needs a full minute.