Video & film · Intermediate
A 15.7-second vertical shot, 1080×1920, 24 fps, silent. A huge crimson-and-gold phoenix climbs through a black thunderstorm above the ocean. Lightning cracks beside it, rain hisses into steam on its smouldering feathers, and the glow at the top of the storm grows into a blinding light. It punches through the cloud ceiling into a golden sunrise, its whole plumage ignites, and it glides out over a sea of cloud with flames trailing from its tail. There are no cuts you can see: it is one 10-second Seedance 2.5 clip plus a 7-second continuation built from that clip's own last frames.
The recipe
Every step gives you the action, the exact input (a prompt, settings or a file) and a check to compare your result against the original.
Gemini — gemini.google.com image generation (Nano Banana; the app showed version 2.1 in October 2026) — The start still. ChatGPT image generation works the same way Higgsfield — Plus plan, Seedance 2.5 — Image-to-video (omni reference, start image only) and video extension (forward). About 12 credits per second at 1080p FFmpeg — 4.4 or newer — Trim, join with a short crossfade, encode. Free Higgsfield CLI (optional) — @higgsfield/cli 1.1.26 — Lets Claude Code quote, run and download the generations; the web app does the same by hand Provenance: Recorded October 8, 2026: the start still was generated in Gemini by the Dstacked owner from the prompts above; Claude Code ran Seedance 2.5 on Higgsfield through the official CLI (job 2433f2f9 for the climb, job 0d7f2d61 for the extension, 204 credits) and did the FFmpeg edit.