Bytedance Image to Video
fal-ai/bytedance/seedance/v1.5/pro/image-to-video
Generate videos with audio with Seedance 1.5 (supports start & end frame)
Inference
Commercial use
Partner
Input
Hint: Drag and drop image files from your computer, images from web pages, paste from clipboard (Ctrl/Cmd+V), or provide a URL. Accepted file types: jpg, jpeg, png, webp, gif, avif
Additional Settings
Customize your input with more control.
Result
Idle
What would you like to do next?
Each 720p 5 second video with audio costs roughly $0.26. For other resolutions, 1 million video tokens with audio costs $2.4. Without audio, the price is 1.2 per millition tokens. tokens(video) = (height x width x FPS x duration) / 1024.
Logs
Seedance 1.5 Pro Image-to-Video
Animate any image into a cinematic video with synchronized audio. Upload a start frame and optionally an end frame and Seedance 1.5 Pro generates the motion, camera movement, dialogue, and sound design in between.
Use Cases
| Use Case | Why Seedance 1.5 Pro fits |
|---|---|
| Photo animation | Breathe life into a still portrait or product shot with realistic motion and ambient sound. |
| Character animation | Turn concept art or a single character frame into a speaking, emoting performance with lip-sync. |
| Product reveals | Start on a hero shot, end on packaging — the model animates the transition with cinematic flair. |
| Scene transitions | Define start and end compositions for precise A-to-B shots — useful for ads, trailers, or music videos. |
| Storyboard-to-video | Convert illustrated storyboard frames into rough-cut motion tests with matching audio. |
| Social content | Animate memes, portraits, or fan art into shareable clips with sound. |
| Virtual avatars | Animate a single headshot into a talking-head video with natural speech and lip-sync. |
Key Features
| Feature | Description |
|---|---|
| Start frame conditioning | Upload an image to set the opening composition, lighting, subject, and style. |
| End frame conditioning | Optionally upload a second image to define where the shot lands — the model generates the motion path between them. |
| Native audio generation | Dialogue, sound effects, and ambient audio rendered alongside the video. Lip movements stay locked to speech. |
| Cinematic camera work | Pan, tilt, zoom, dolly, orbit, tracking shots — describe the move in your prompt. |
| Character consistency | The subject from your start frame stays stable throughout — face, clothing, and expression. |
| High resolution | Output up to 1080p with smooth temporal consistency. |
Controls
| Parameter | Options | Notes |
|---|---|---|
`prompt` | Text (required) | Describe action, dialogue, camera, and sound |
`image_url` | URL (required) | Start frame — sets the opening composition |
`end_image_url` | URL (optional) | End frame — defines the closing composition |
`aspect_ratio` | `21:9` · `16:9` · `4:3` · `1:1` · `3:4` · `9:16` | Default: `16:9` |
`resolution` | `480p` · `720p` | `480p` for faster iteration; `720p` for final output |
`duration` | `4`–`12` seconds | Default: `5` |
`generate_audio` | `true` / `false` | Default: `true` — set `false` for silent video |
`camera_fixed` | `true` / `false` | Lock the camera in place (tripod shot) |
`seed` | Integer | Set a value for reproducibility; use `-1` for random |
Start Frame / End Frame
This is the core differentiator from text-to-video. You control the opening and closing compositions directly.
| Frame | What it does |
|---|---|
Start frame (`image_url`) | Required. Sets the initial subject, pose, lighting, color grade, and environment. The model animates forward from here. |
End frame (`end_image_url`) | Optional. Defines the final composition. The model generates a motion path that lands precisely on this frame. |
Tips:
- Use the same subject in both frames for smooth transitions.
- Match aspect ratio and style between start and end frames.
- Motion is generated in latent space — not interpolated — so physics and camera movement feel natural.
Prompting Tips
Your prompt guides what happens between the frames:
| Element | Example |
|---|---|
| Action | "She turns to face the camera and smiles" |
| Dialogue | `"I've been waiting for this moment."` (use quotes) |
| Camera | "Slow push-in ending on a close-up" |
| Audio/Foley | "Soft piano, room reverb, fabric rustling" |
More tips:
- The start frame already defines the scene — focus your prompt on motion and sound.
- For talking heads, put the dialogue in quotes and describe the emotion:
`"I can't believe it," voice breaking with emotion`. - Use
`camera_fixed: true`if you want the subject to move but the frame to stay locked.
Specs
| Spec | Value |
|---|---|
| Max duration | 12 seconds |
| Max resolution | 1080p |
| Audio | Mixed dialogue + foley + score, 48 kHz AAC |
| Output format | MP4 (H.264) |