bytedance/seedance-1.5-protext-to-videoimage-to-videooutputs videodocs.kie.aipast runsA different schema from the 2.x line: images arrive as one input_urls array rather than named frames, and duration has no documented default.480p/720p/1080p · 4-12s · audio · takes image
aspect_ratio vs ratio vs image_size — the same idea, two names67 modelsCopying a payload between these models silently drops the field, because the receiving model has never heard of that key. uses aspect_ratio: kling-2.6/text-to-video, kling/v2-5-turbo-text-to-video-pro, kling/v2-1-master-text-to-video +52 — uses ratio: wan/2-7-text-to-video — uses image_size: bytedance/seedream, bytedance/seedream-v4-text-to-image, bytedance/seedream-v4-edit +10. google/nano-banana and google/nano-banana-edit declare more than one of these spellings, so setting two of them on the same request sets one idea twice — check which the docs mark current.
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.
aspect_ratio accepts different values on different models55 modelsA value that works on one of these is rejected on another. accepts 16:9,1:1,9:16: kling-2.6/text-to-video, kling/v2-5-turbo-text-to-video-pro, kling/v2-1-master-text-to-video +4 — accepts 16:9,1:1,9:16,auto: kling-3.0-omni/image-to-video, kling-3.0-omni/reference-to-video, kling-3.0-omni/transformation — accepts 16:9,1:1,21:9,3:4,4:3,9:16,adaptive: bytedance/seedance-2, bytedance/seedance-2-fast, bytedance/seedance-2-mini +1 — accepts 16:9,1:1,21:9,3:4,4:3,9:16: bytedance/seedance-1.5-pro, bytedance/v1-pro-text-to-video — accepts 16:9,1:1,3:4,4:3,9:16,9:21: bytedance/v1-lite-text-to-video — accepts 16:9,1:1,21:9,2:3,3:2,3:4,4:3,9:16: seedream/4.5-text-to-image, seedream/4.5-edit, seedream/5-lite-text-to-image +4 — accepts 16:9,9:16: wan/2-2-a14b-text-to-video-turbo, gemini-omni-video, google/gemini-omni-flash-1-1 — accepts 16:9,1:1,3:4,4:3,9:16: wan/2-7-videoedit, wan/2-7-r2v — accepts 16:9,1:1,3:4,4:3,9:16,adaptive: wan/3-0-video, wan/3-0-video-prime — accepts 16:9,1:1,1:8,21:9,3:4,4:3,8:1,9:16: wan/2-7-image, wan/2-7-image-pro — accepts 16:9,1:1,3:4,4:3,9:16,auto: google/imagen4, google/imagen4-fast, google/imagen4-ultra — accepts 16:9,1:1,21:9,2:3,3:2,3:4,4:3,4:5,5:4,9:16,auto: google/nano-banana, google/nano-banana-edit, nano-banana-pro — accepts 16:9,1:1,1:4,1:8,21:9,2:3,3:2,3:4,4:1,4:3,4:5,5:4,8:1,9:16,auto: nano-banana-2, nano-banana-2-1, nano-banana-2-lite — accepts 16:9,9:16,Auto: veo3, veo3_fast, veo3_lite — accepts 1:1,2:3,3:2: gpt-image/1.5-text-to-image, gpt-image/1.5-image-to-image — accepts 16:9,1:1,1:2,1:3,21:9,2:1,2:3,3:1,3:2,3:4,4:3,4:5,5:4,9:16,9:21,auto: gpt-image-2-text-to-image, gpt-image-2-image-to-image — accepts 16:27,16:9,1:1,21:9,27:16,2:3,3:2,3:4,4:3,8:9,9:16,9:8,auto: gpt-image-2-5-flare-text-to-image, gpt-image-2-5-flare-image-to-image, gpt-image-2-5-sunburst-text-to-image +1 — accepts 16:9,1:1,21:9,2:3,3:2,3:4,4:3,9:16,9:21: qwen2-1/text-to-image — accepts 16:9,1:1,21:9,2:3,3:2,3:4,4:3,9:16,9:21,auto: qwen2-1/image-to-image.
image vs image_url vs image_urls vs image_input vs input_urls vs imageUrls — the same idea, two names55 modelsCopying a payload between these models silently drops the field, because the receiving model has never heard of that key. uses image: recraft/crisp-upscale, recraft/remove-background — uses image_url: kling/v2-5-turbo-image-to-video-pro, kling/v2-1-master-image-to-video, kling/v2-1-pro +16 — uses image_urls: kling-2.6/image-to-video, kling-3.0/video, kling/v3-turbo-image-to-video +16 — uses image_input: nano-banana-2, nano-banana-2-1, nano-banana-pro — uses input_urls: kling-2.6/motion-control, kling-3.0/motion-control, bytedance/seedance-1.5-pro +6 — uses imageUrls: veo3, veo3_fast, veo3_lite.
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.
A different schema from the 2.x line: images arrive as one input_urls array rather than named frames, and duration has no documented default.
| Field | Type | Accepts | Default |
|---|---|---|---|
promptrequiredText description of the video to generate. | text | 3…20000 chars | — |
input_urlsZero, one (first frame) or two (first and last). jpeg/png/webp, 10MB each. | url[] | 0…2 items, image | — |
aspect_ratiorequiredFrame shape. No adaptive option on this model. | enum | 1:1 | 4:3 | 3:4 | 16:9 | 9:16 | 21:9 | "1:1" |
resolutionOutput resolution tier. | enum | 480p | 720p | 1080p | "720p" |
durationrequiredSeconds, 4 to 12. | number | 4…12, step 1 | — |
fixed_lensLock the camera for a stable, static shot. | boolean | — | false |
generate_audioIncreases generation cost. | boolean | — | false |
nsfw_checkerWhen off, results are returned directly by the model without filtering. | boolean | — | false |
The models most easily confused with this one.
bytedance/seedance-2bytedance/seedance-2-fastbytedance/seedance-2-minibytedance/seedance-2-5bytedance/v1-pro-text-to-videobytedance/v1-lite-text-to-video