Seedance 2.0 Video Generation

Generate videos with synchronized audio using ByteDance's Seedance 2.0 models via inference.sh CLI.

Quick Start

Requires inference.sh CLI (belt ). Install instructions

belt login

belt app run falai/seedance-2-t2v --input '{ "prompt": "a jazz band performing in a dimly lit club", "generate_audio": true }'

Seedance 2.0 Models

Model App ID Best For

Seedance 2 T2V falai/seedance-2-t2v

Text-to-video with audio

Seedance 2 I2V falai/seedance-2-i2v

Animate images with audio

Seedance 2 R2V falai/seedance-2-r2v

Reference images/videos/audio to video

All models support quality and fast modes, 480p/720p resolution, and synchronized audio generation.

Examples

Text-to-Video with Audio

belt app run falai/seedance-2-t2v --input '{ "prompt": "ocean waves crashing on rocks during a storm, dramatic cinematic shot", "generate_audio": true, "duration": 10, "aspect_ratio": "16:9" }'

Fast Mode (Cheaper)

belt app run falai/seedance-2-t2v --input '{ "prompt": "a butterfly landing on a flower in slow motion", "mode": "fast", "generate_audio": true }'

Image-to-Video

Animate a still image into a video:

belt app run falai/seedance-2-i2v --input '{ "image": "https://your-image.jpg", "prompt": "gentle camera movement, leaves rustling in the wind", "generate_audio": true }'

Image-to-Video with Start and End Frames

belt app run falai/seedance-2-i2v --input '{ "image": "https://start-frame.jpg", "end_image": "https://end-frame.jpg", "prompt": "smooth transition between scenes", "generate_audio": true }'

Reference-to-Video

Use reference images, videos, or audio in your prompt with @Image1 , @Video1 , @Audio1 placeholders:

belt app run falai/seedance-2-r2v --input '{ "prompt": "A person who looks like @Image1 is walking through a garden", "images": ["https://portrait.jpg"], "generate_audio": true }'

Multi-Reference

belt app run falai/seedance-2-r2v --input '{ "prompt": "@Image1 and @Image2 are having a conversation at a cafe", "images": ["https://person1.jpg", "https://person2.jpg"], "generate_audio": true }'

Reference with Audio

belt app run falai/seedance-2-r2v --input '{ "prompt": "A musician who looks like @Image1 is performing @Audio1", "images": ["https://musician.jpg"], "audios": ["https://music.mp3"], "generate_audio": true }'

Pricing

Mode 720p 480p

Quality ~$0.30/sec ~$0.13/sec

Fast ~$0.24/sec ~$0.11/sec

Parameters (T2V)

Parameter Type Default Description

prompt

string required Text description of the video

generate_audio

boolean false Generate synchronized audio

duration

enum

Duration in seconds (4–10)

aspect_ratio

enum

16:9, 9:16, 1:1, 4:3, 3:4

resolution

enum

480p or 720p

mode

enum quality quality or fast

seed

integer random Reproducible generation

Parameters (I2V)

Same as T2V plus:

Parameter Type Description

image

file Starting frame image (required)

end_image

file Optional ending frame

Parameters (R2V)

Same as T2V plus:

Parameter Type Description

images

array Reference images (@Image1, @Image2, ...)

videos

array Reference videos (@Video1, @Video2, ...)

audios

array Reference audio (@Audio1, @Audio2, ...)

Search Seedance Apps

belt app list --search "seedance"

Related Skills

Full platform skill (all 250+ apps)

npx skills add inference-sh/skills@infsh-cli

All video generation models

npx skills add inference-sh/skills@ai-video-generation

Google Veo

npx skills add inference-sh/skills@google-veo

Image generation (for image-to-video)

npx skills add inference-sh/skills@ai-image-generation

AI avatars & lipsync

npx skills add inference-sh/skills@ai-avatar-video

Browse all video apps: belt app list --category video

Documentation

• Running Apps - How to run apps via CLI

• Streaming Results - Real-time progress updates

• Content Pipeline Example - Building media workflows