LiveByteDance · Seedance 1.5 Pro family6 endpoints

Seedance 1.5 Pro API — Text-to-Video, Image-to-Video & Video Extend

The Seedance 1.5 Pro API hub brings six live ByteDance endpoints into one Muapi catalog: standard and Fast text-to-video, image-to-video, and video extension. Use one asynchronous API flow while choosing the input type, speed tier, output resolution, and optional generated audio.

Get a Seedance 1.5 Pro API Key Try Seedance 1.5 Pro Browse Video Models

Seedance 1.5 ProStandard text, image, and video extension workflows3 models

Text to VideoLiveFeatured

Pro

Seedance 1.5 Pro Text to Video

Generate cinematic video from a text prompt with configurable aspect ratio, duration, resolution, audio, and camera behavior.

480p–1080p

$0.016–$0.052/sec

Try Model

Image to VideoLive

Pro

Seedance 1.5 Pro Image to Video

Animate a still image with a motion prompt while preserving the source composition, subject identity, and lighting.

480p–1080p

$0.016–$0.052/sec

Try Model

Video ExtendLive

Pro

Seedance 1.5 Pro Video Extend

Continue an existing video from a video URL while matching its visual style, motion, lighting, and mood.

480p–720p

$0.016–$0.034/sec

Try Model

Seedance 1.5 Pro FastLower-latency video generation and extension3 models

Text to VideoLive

Fast

Seedance 1.5 Pro Fast Text to Video

Create prompt-driven video drafts with the Fast endpoint for lower-latency iteration at 720p or 1080p.

720p–1080pFast

$0.026–$0.039/sec

Try Model

Image to VideoLive

Fast

Seedance 1.5 Pro Fast Image to Video

Turn a reference image into a quick cinematic clip with prompt-directed motion at 720p or 1080p.

720p–1080pFast

$0.026–$0.039/sec

Try Model

Video ExtendLive

Fast

Seedance 1.5 Pro Fast Video Extend

Extend an existing video quickly with a short continuation that maintains the original scene’s motion and lighting.

720p–1080pFast

$0.026–$0.039/sec

Try Model

What is the Seedance 1.5 Pro API?

Seedance 1.5 Pro is ByteDance's short-form video family for prompt-driven generation, image animation, and continuation of an existing clip. Muapi exposes six enabled endpoints under the exact model slugs in the catalog, with the same submit-and-poll workflow used across its video APIs.

The standard Pro tier includes text-to-video, image-to-video, and video extend. The Fast tier provides matching generation and extension modes with a separate lower-latency cost strategy. Text-to-video and image-to-video accept six aspect ratios—16:9, 9:16, 1:1, 3:4, 4:3, and 21:9—and all six endpoints support 4–12 second durations.

Pricing is duration- and resolution-based rather than a universal flat request fee. Standard video costs $0.016/sec at 480p, $0.034/sec at 720p, and $0.052/sec at 1080p. Fast costs $0.026/sec at 720p and $0.039/sec at 1080p. Setting generate_audio to true doubles the video charge; the schema defaults make a 5-second, 720p, audio-enabled request $0.34 on standard Pro or $0.26 on Fast.

Seedance 1.5 Pro API capabilities

Text-to-video

Turn a detailed prompt into a short video with the standard or Fast text-to-video endpoint.

Image-to-video

Animate an image URL with a motion prompt, with an optional last_image input for guided transitions.

Video extension

Pass video_url to continue an existing clip while matching its style, motion, lighting, and mood.

Audio and camera controls

Choose generated audio, fixed or moving camera behavior, duration, resolution, and aspect ratio where the schema supports each option.

Quick start — Seedance 1.5 Pro API

Submit a Seedance 1.5 Pro text-to-video task with your Muapi key, receive a request ID, and poll the shared predictions endpoint for the completed video URL.

1. Submit a Seedance 1.5 Pro job

curl -X POST https://api.muapi.ai/api/v1/seedance-v1.5-pro-t2v \
  -H "x-api-key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"prompt":"A floating observatory drifts above a luminous ocean at night","aspect_ratio":"16:9","duration":5,"resolution":"720p","generate_audio":true,"camera_fixed":false}'

# Response: {"request_id":"REQUEST_ID"}

The example uses the standard text-to-video endpoint at 720p for 5 seconds with generated audio. Switch to the image-to-video or video-extend slug and provide the corresponding media field for those workflows.

2. Poll the result

curl https://api.muapi.ai/api/v1/predictions/REQUEST_ID/result \
  -H "x-api-key: YOUR_API_KEY"

Poll until the task is completed, then read the generated video URL from the result response.

Seedance 1.5 Pro API FAQ

Which Seedance 1.5 Pro endpoints are available?

Muapi lists six enabled endpoints: standard and Fast text-to-video, image-to-video, and video extend. Use the catalog cards to open the exact playground slug for each mode.

How is Seedance 1.5 Pro priced?

Charges depend on duration and resolution. Standard rates are $0.016/sec at 480p, $0.034/sec at 720p, and $0.052/sec at 1080p. Fast rates are $0.026/sec at 720p and $0.039/sec at 1080p. Generated audio doubles the video charge.

What inputs does image-to-video accept?

The image-to-video endpoints require prompt and image_url, and also expose optional last_image, aspect_ratio, duration, resolution, generate_audio, and camera_fixed fields.

How do I extend a Seedance 1.5 Pro video?

Call seedance-v1.5-pro-video-extend or seedance-v1.5-pro-video-extend-fast with prompt and video_url. Standard extend supports 480p and 720p; Fast extend supports 720p and 1080p, with 4–12 second durations.

Which resolutions and aspect ratios are supported?

Standard text-to-video and image-to-video support 480p, 720p, and 1080p. Fast generation supports 720p and 1080p. Standard video extend supports 480p and 720p, while Fast extend supports 720p and 1080p. The six aspect-ratio options apply to the text-to-video and image-to-video rows.

Explore Seedance Lite and Pro API →Compare the separate ByteDance Seedance Lite and Pro catalog.Explore Seedance 2 API →Browse the newer Seedance generation and its multimodal reference workflows.Explore Seedance 2.5 API →Compare the flagship Seedance 2.5 variants and higher-resolution workflows.Compare AI video editing APIs →See video extension alongside other Muapi editing and post-production endpoints.Compare AI video APIs →Evaluate Seedance 1.5 Pro with the broader Muapi video catalog.Read the API docs →Learn Muapi's authentication, submit, and polling flow.

Build with Seedance 1.5 Pro

Connect standard and Fast text-to-video, image-to-video, and video extension through one Muapi API key.

Get an API Key Try Seedance 1.5 Pro