CaIon b66674ac23 feat(task-plugin): let Seedance and wan3.0 pick the video duration with -1 ...

A plugin that declares duration-auto@1 may receive a duration of -1 (the
vendor picks the length) anywhere in the request; other negative values and
values above the limit are still rejected, and usage facts stay
non-negative. A declaring plugin reserves the model's longest duration and
settles on the usage the vendor reports.

- doubao 1.3.0 declares it, forwards -1 to Ark and reserves each model's
  longest duration (12 s for Seedance 1.0 and 1.5 pro, 15 s for 2.0, 30 s for
  2.5). A JSON duration on /v1/videos now reaches Ark.
- alibaba 1.4.2 declares it, so wan3.0 smart duration also works on
  /v1/video/generations.

Fixes #7700

2026-10-10 13:39:44 +08:00

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plugin.js

feat(task-plugin): let Seedance and wan3.0 pick the video duration with -1

2026-10-10 13:39:44 +08:00