720p/1080p · 2-15s · takes image+video+audio
resolution accepts different values on different models57 modelsA value that works on one of these is rejected on another. accepts 1080p,720p: kling/v3-turbo-text-to-video, kling/v3-turbo-image-to-video, bytedance/v1-pro-fast-image-to-video +12 — accepts 1080p,4k,720p: kling-3.0-omni/text-to-video, kling-3.0-omni/image-to-video, kling-3.0-omni/reference-to-video +5 — accepts 1080p,480p,4k,720p: bytedance/seedance-2 — accepts 480p,720p: bytedance/seedance-2-fast, bytedance/seedance-2-mini, wan/2-2-a14b-text-to-video-turbo +1 — accepts 1080p,480p,720p: bytedance/seedance-2-5, bytedance/seedance-1.5-pro, bytedance/v1-pro-text-to-video +3 — accepts 480p,580p,720p: wan/2-2-a14b-speech-to-video-turbo, wan/2-2-animate-move, wan/2-2-animate-replace — accepts 1080P,480P,720P: wan/3-0-video, wan/3-0-video-prime — accepts 1K,2K,4K: wan/2-7-image, wan/2-7-image-pro, nano-banana-2 +8 — accepts 1080p,360p,4k,720p: google/gemini-omni-flash-1-1 — accepts 1K,2K: qwen2-1/text-to-image, qwen2-1/image-to-image, qwen3/text-to-image +3.
duration is not the same type on every model43 modelsSending the wrong JSON type is rejected as a 422 that names the field but not the reason. as string: kling-2.6/text-to-video, kling-2.6/image-to-video, kling/v2-5-turbo-text-to-video-pro +23 — as number: kling-3.0-omni/text-to-video, kling-3.0-omni/image-to-video, kling-3.0-omni/reference-to-video +14.
seed is not the same type on every model36 modelsSending the wrong JSON type is rejected as a 422 that names the field but not the reason. as number: bytedance/v1-pro-text-to-video, bytedance/v1-pro-image-to-video, bytedance/v1-lite-text-to-video +31 — as string: google/imagen4, google/imagen4-ultra.
watermark is not the same type on every model9 modelsSending the wrong JSON type is rejected as a 422 that names the field but not the reason. as boolean: wan/2-7-text-to-video, wan/2-7-image-to-video, wan/2-7-videoedit +3 — as string: veo3, veo3_fast, veo3_lite.
The form enforces these up front — it disables the conflicting control rather than letting you submit and reading back a 422.
mutuallyExclusiveGroupsfirst_frame_url, last_frame_url, first_clip_urlChoose one mode: frame images (first, optionally with last), or a clip to continue.
requireslast_frame_urlA last frame needs a first frame.
requiresOneOffirst_frame_url, first_clip_urlProvide a first frame or a clip to continue.
| Field | Type | Accepts | Default |
|---|---|---|---|
promptrequiredPositive prompt for video generation. | text | 0…5000 chars | — |
negative_promptContent that should not appear in the video. | text | 0…500 chars | — |
first_frame_urlStart the video from this image. | url | image | — |
last_frame_urlEnd the video on this image. Requires a first frame. | url | image | — |
first_clip_urlVideo-continuation mode. Cannot be combined with frame images. | url | video | — |
driving_audio_urlAudio-guided motion. | url | audio | — |
resolutionOutput resolution tier. | enum | 720p | 1080p | "1080p" |
durationSeconds, 2 to 15. | number | 2…15, step 1 | 5 |
prompt_extendRewrite and expand the prompt. Usually helps short prompts; adds processing time. | boolean | — | true |
watermarkStamps "AI generated" in the lower-right corner. | boolean | — | false |
seedRandom seed for reproducibility. | seed | 0…2147483647, step 1 | — |
nsfw_checkerWhen off, results are returned directly by the model without filtering. | boolean | — | false |
The models most easily confused with this one.
wan/2-2-a14b-image-to-video-turbowan/2-5-image-to-videowan/2-6-image-to-videowan/2-6-flash-image-to-video