Generate Video (Seedance on Volcengine Ark)

Turn a text prompt — optionally anchored by a first frame, a last frame, or reference images — into a short video. The script submits an async task, polls until it finishes, and downloads the .mp4. Generation takes a few minutes, so set expectations and let it run.

Prerequisites

• uv available (self-contained uv run script; deps install on first run).

• A Volcengine Ark key. Resolved progressively, so any one works:

  • export ARK_API_KEY=... in the shell, or
  • a .env file (checked in order: $PWD/.env, then ${CLAUDE_PLUGIN_ROOT}/.env), or
  • --api-key ... on the command line.

  CRITICAL -- Never paste the API key into chat or commit a .env. If the key is missing, the script prints exactly how to set it — relay that instead of guessing.

Workflow