bytedance/seedance-2.0-fast-i2v

What Seedance 2.0 Fast I2V Does

Seedance 2.0 Fast I2V is a high-speed, multimodal image-to-video model that turns still images into video, optimized for rapid prototyping and multi-shot creation. It accepts first/last frame images or reference images plus a text prompt to drive motion, with native audio generation in a single pass.

Key Features

• Image-to-Video Generation: Animates still images into motion using first-frame, last-frame, or up to 9 reference images.
• Native Audio: Generates synchronized audio by default (generate_audio) and accepts up to 3 audio inputs.
• Multi-Shot Creation: Supports multi-shot generation via reference images for more complex sequences.
• Flexible Output Formats: Offers 480p/720p resolution across 21:9, 16:9, 4:3, 1:1, 3:4, and 9:16 ratios.
• Customizable Duration & Camera: Produces 4–15 second clips with optional fixed-camera mode.
• Asynchronous Architecture: Uses a “Create Task → Poll Result” API workflow built for high throughput.

How to Use Seedance 2.0 Fast I2V

1. Prepare your input image(s) — a first_frame_image (and optional last_frame_image), or up to 9 reference_images.
2. Write a prompt (recommended under ~1,000 words) describing the motion and scene you want.
3. Submit a POST request to the /api/v1/bytedance/seedance-2.0-fast-i2v endpoint with your image input and prompt, plus optional ratio, resolution, duration, seed, camera_fixed, and generate_audio.
4. Receive a task_id with a “pending” or “processing” status.
5. Poll the GET results endpoint and download the finished video once it succeeds.

Best Use Cases

• Rapid Prototyping: Quickly test motion ideas from a single still image before committing to a full render.
• Social Media Content: Animate product shots or graphics into short-form videos with synced audio.
• Multi-Shot Storyboards: Build multi-shot sequences from reference images for fast concept videos.
• Marketing Creatives: Bring static brand assets to life for ads and promos at speed.

Tips for Better Results

• Choose Fast for Speed, Not Max Fidelity: For the absolute highest cinematic quality, use the standard Seedance 2.0 model instead.
• Use First/Last Frames for Control: Set both first_frame_image and last_frame_image to guide the motion arc precisely (note: frame images and reference_images are mutually exclusive).
• Leverage Reference Images for Multi-Shot: Supply multiple reference images when you need richer, multi-shot output.
• Fix the Camera When Needed: Set camera_fixed: true for stable, locked-off shots.
• Iterate at 480p: Test quickly at 480p, then finalize at 720p; set a specific seed for reproducible tweaking.

属性

• 提供商: bytedance
• 类别: 图生视频

系列

• Seedance

参数

价格

单位: $/sec

相关模型

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