Render a video clip from an image and a prompt

Renders a short mp4 (1 to 15 seconds, 25 fps) of the person or character in image, moving as prompt describes, optionally speaking audio. No avatar is made or needed: the clip is rendered directly by Atmee's v2 renderer.

image is upload:<uploadId> (a portrait upload, which stays usable afterwards) or a public https link to a jpg, png or webp of at most 10 MB; audio the same for a voice upload or link (wav, mp3, webm, ...). The audio plays once from the start of the clip, padded with silence and cut at its end. durationSeconds is required with audio (the audio's own length is not read: set it to the audio's length, at most 15; without it the request is 400 invalid_input) and defaults to 8 for a silent clip; resolution defaults to 512 x 512 (see RenderResolution; e.g. 384 x 672 for portrait, 672 x 384 for landscape) and seed to 0. The prompt and the image are moderated first. If the image shows a real person other than the creator, have that person's permission first.

The clip is returned as upload:<uploadId> (24 hours) with a short-lived url to download it. It costs the price per 15 seconds (GET /v1/account, pricing.generation.clipPer15SecondsMicrocredits) times durationSeconds / 15, rounded up to a whole microcredit (1 credit for a 15-second clip), charged only when the clip comes back; a flagged, failed or refused call costs nothing. Clips use the v2 renderer, so an account without v2 access gets 403 v2_access_required. A render can take minutes when the renderer starts cold: past about 45 seconds the request answers 409 request_in_progress, and a retry with the same Idempotency-Key after Retry-After returns the clip once it is done, charged once. An image or audio the renderer cannot use (no face, an unreadable file) is 400 invalid_input naming input_failure image or input_failure audio. Where clips are not offered the route answers 503 generation_unavailable. A size this deployment offers but its render pool does not serve is 400 invalid_input naming input_failure resolution ("the render pool does not serve WxH"), not an image error. Requires generation:write and avatars:write.