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