Hailuo H3 Regen on Sume: regenerate one H3 clip at 2K

hailuo-h3-regen takes a video you made with MiniMax H3 and regenerates it under a new prompt at 2K. It is a Tencent VOD row, listed only where the Tencent switch serves it. The prompt is required, the source must be one H3 768p output, and the result keeps the length and framing of the source. That is different from the 2K and 4K options on minimax-h3 itself, which the catalog describes as upscales from native 768p.

What must the source clip look like?

The catalog constraint is specific. The video_url must be at most 1344 by 768, carry an audio track, and run 4.5 to 15 seconds, which is the shape of an H3 768p output. The output length is 5 to 16 seconds, the source length rounded up. There is no aspect_ratio, no frame image and no reference input on this row.

When is it worth a second job?

Use it when you like the framing and timing of an H3 clip but want different content, such as a changed object or mood, without re-planning the shot. MiniMax describes H3 on its product page as an open-weight, general-purpose, omni-modal generation model; that page gives no resolution or length detail, so the limits here come from the Sume catalog only. If you only want more pixels, the H3 upscale tiers or a video upscale job are simpler, because Regen asks you to write a new prompt.

How do I check it is available?

Fetch GET /v1/video-router/models/hailuo-h3-regen. A 404 means the row is not served in that environment.