Generate video with Kling 3.0 4K
Kuaishou Kling 3.0 at native 4K resolution — text-to-video, plus image-to-video with a start frame and an optional end frame. Any duration from 3 to 15 seconds. Optional audio (no price impact at 4K).
Asynchronous. Returns a job id (the video is not in this response). Poll GET /v1/videos/{id} until status is succeeded — the video URL is in that response’s video_url.
Authorizations
API key as a bearer token: Authorization: Bearer bpx_live_xxx
Body
Text description of the video.
Aspect ratio. Ignored when a start image already sets the frame.
16:9, 9:16, 1:1 Optional end frame, used together with image (the start frame) to interpolate the video between the two frames. Same input forms as image.
Generate audio with the video. Raises the per-second rate on Standard/Pro (no price impact at 4K) — estimate via POST /v1/cost.
Optional start frame for image-to-video. Provide a public image URL, a data URI, raw base64, or an uploaded-file URL from POST /v1/uploads. Omit for text-to-video.
Video length in seconds (3–15).
3 <= x <= 15