Is MiniMax H3 Extender available online?
Yes. The dedicated H3 Max Extend task is connected to the generator on this page. Upload a source video, enter a continuation prompt, choose the output settings, and generate online.
MiniMax H3 Video Extender
Upload an existing video, describe what should happen next, and generate a longer continuation with the dedicated H3 Max Extend workflow. Choose the continuation length, output shape, and resolution before you create.
1.625–60 second source video5–15 second continuationOutput up to 2K
Upload a 1.625–60 second source video, then describe what should happen next.
Describe the continuation, not what already happens in the source video.
Preview video - Generate your own video above
MiniMax H3 Extender Continues a Moving Scene
Watch a source journey carry forward as the traveler and dogs move toward the village. The example shows the dedicated continuation workflow; results still depend on the source clip and the direction in your prompt.
What Is MiniMax H3 Extender?
MiniMax H3 Extender is an online video continuation tool built around the dedicated H3 Max Extend workflow. It reads an uploaded clip as context, follows a prompt for what happens next, and returns a longer downloadable video. The tool is available here now; it is generation, not timeline editing, so exact visual and audio continuity can vary.
- Start From Existing FootageUpload an MP4, MOV, WebM, or M4V file between 1.625 and 60 seconds and up to 50MB.
- Direct the ContinuationDescribe the next action, camera movement, setting change, or story beat instead of repeating the source scene.
- Receive One Extended VideoChoose a 5–15 second continuation and download the resulting longer clip when generation finishes.
MiniMax H3 Extender Directs the Next Part of the Shot
Use the source video as temporal context, then make the continuation specific with a forward-looking prompt and delivery settings that match your next placement.
Tell the Action Where to Go Next
Upload the clip and write only the continuation: what the subject does, how the camera moves, and what changes after the current ending. This gives the model a clearer next beat for narrative, product, or movement-driven footage.
- Prompts can describe action, camera direction, environment, and pacing
- The editable prompt accepts up to 7,000 characters
Carry Motion and Scene Context Forward
The source clip supplies the people, objects, camera movement, and scene leading into the new segment. A clear continuation prompt helps preserve the intended direction, while complex cuts, fast motion, and audio transitions may still produce a visible seam.
- Uses the complete uploaded video rather than extracting only its final frame
- Best results come from a source ending with readable subjects and motion
Choose the Continuation Length and Delivery Format
Set a 5–15 second continuation, select an automatic or explicit aspect ratio, and choose 480P, 768P, 1080P, or 2K output. The form shows the credit estimate before you submit.
- Landscape, portrait, square, and ultrawide aspect-ratio options
- Resolution and duration determine the displayed credit cost
Extend a Video With MiniMax H3 Extender
The dedicated form keeps the source, continuation direction, and output choices together in one workflow.
01
Upload the Source Video
Choose a supported video from 1.625 to 60 seconds, no larger than 50MB. Use a clip whose final subject and motion are easy to read.
02
Describe What Happens Next
Write the continuation rather than summarizing the existing footage. Name the next action, camera move, setting, and pacing that matter.
03
Set the Output and Generate
Choose 5–15 seconds, an aspect ratio, and a resolution up to 2K. Review the credit estimate, generate, then preview or download the extended video.
MiniMax H3 Extender for Stories, Ads, and Social Cuts
Add a purposeful next beat when a promising clip ends before the action, reveal, or transition is complete.
Continue a Story Beat
Carry a character into the next action or location without rebuilding the opening shot from scratch.
Finish a Product Reveal
Extend a turn, camera move, or environmental reveal so the product reaches the intended final composition.
Build a Longer Ambient Loop
Generate an additional motion segment for landscapes, interiors, and background scenes before editing a loop.
Continue a Camera Move
Prompt the shot to keep pushing, tracking, orbiting, or pulling back from the motion already on screen.
Add a Social Outro
Give a short vertical or square clip more time for a reaction, visual payoff, or clean final hold.
Develop Previsualization
Explore the next blocking or camera beat in a previs sequence before committing to a production edit.
MiniMax H3 Extender Limits and Workflow Answers
Key details about source files, continuation length, output controls, continuity, and repeated extensions.
How long can the source video be?
The uploaded source must be between 1.625 and 60 seconds. It must be 50MB or smaller and have an aspect ratio between 0.4 and 2.5.
How many seconds can MiniMax H3 Extender add?
You can choose a continuation from 5 to 15 seconds in one-second increments. The source length and chosen continuation are separate controls.
Which video formats can I upload?
The uploader accepts MP4, MOV, WebM, and M4V files. The server also checks the file size, duration, aspect ratio, and presence of a readable video track before charging the task.
Which output resolutions and aspect ratios are available?
Choose 480P, 768P, 1080P, or 2K. Aspect-ratio options include Auto, 16:9, 9:16, 21:9, 4:3, 1:1, and 3:4.
Will the extension be perfectly seamless?
Not always. The source provides context, but fast motion, abrupt source endings, complex cuts, or large prompt changes can create visible or audible seams. Use a clear ending and prompt a plausible next action.
What should I write in the continuation prompt?
Start with the very next action, then add camera movement, environment changes, pacing, and any sound direction that matters. Avoid spending the prompt retelling what viewers can already see.
Can I extend the result again?
You can download a completed result and use an eligible video as the source for another generation. Each pass is a new task, so continuity should be reviewed at every join.
Continue Your Clip With MiniMax H3 Extender
Upload the footage you already have, direct the next 5–15 seconds, and generate a longer video in the dedicated extension workflow.