MiniMax H3 Max Extend
minimax/h3-max/extend-videoContinue an existing video with a prompt describing what happens next. Add 5–15 seconds of new footage at 480p through 2K, returning the full extended video or just the continuation. Source videos must be MP4 or MOV, 1.625–60 seconds, at most 50 MB, with an aspect ratio between 0.4 and 2.5.
Pricing
Includes our margin. Charged per request from your balance.
- Minimum charge
- $0.28
Output duration and resolution determine pricing. Reference media may add charges. See model settings and the generation quote.
Details
- Provider
- MiniMax
- Added
- Sep 25, 2026
Options
Parameters this model accepts.
| Parameter | Values | Default |
|---|---|---|
seedUse -1 for a random output | -1 or more Default | -1 |
output | Full extended video, New footage only Default | extended |
durationSeconds to add after the source; the generated continuation may be slightly longer. | 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 Default | 5 |
resolution | 480p, 768p, 1080p, 2K Default | 768p |
aspect_ratio | Match source, 21:9, 16:9, 4:3, 1:1, 3:4, 9:16 Default | auto |
enable_prompt_expansion | On or off Default | on |