
BLACKFORESTLABS FLUX 3 Image-to-Video API by Black Forest Labs
Generate a video that starts from an input image using FLUX 3.
BLACKFORESTLABS FLUX 3 Image-to-Video は Black Forest Labs が開発したモデルです。Atlas Cloud(運営:Atlas Cloud AI LLC)は本モデルへのアクセスを提供するものであり、その所有者ではありません。すべての商標は各所有者に帰属します。
FLUX 3 Image-to-Video
FLUX 3 Image-to-Video brings a static image to life. Provide a starting image and a text prompt describing the motion, and the model generates a smooth cinematic clip that begins exactly on your image — with optional native audio.
Why Choose This?
-
Image-driven generation Animate any photo, illustration, or render with natural, controllable motion.
-
Native audio generation Produce video and synchronized audio in a single request.
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Explicit duration required Duration must be set explicitly to validate keyframe positions.
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Auto aspect ratio Use
autoto match the input image's proportions, or specify any ratio. -
High resolution output Generate videos in 720p or 1080p.
Parameters
| Parameter | Required | Description |
|---|---|---|
| image_url | Yes | URL of the image the video starts from (PNG, JPEG, or WebP) |
| prompt | No | Text description of the desired motion and action |
| aspect_ratio | No | Aspect ratio of the generated video. Default: auto. Options: auto, 21:9, 2:1, 16:9, 4:3, 1:1, 3:4, 9:16 |
| resolution | No | Video resolution. Default: 720p. Options: 720p, 1080p |
| duration | No | Duration in seconds. Default: 5. Options: 5–20. Cannot be auto — required to validate keyframe positions |
| generate_audio | No | Whether to generate audio. Default: true |
| safety_tolerance | No | Safety level 0 (strictest) to 4 (most permissive). Default: 2 |
| seed | No | Random seed for reproducibility |
How to Use
- Provide your starting image — the video will begin from this frame.
- Write your prompt — describe the motion, camera movement, and action.
- Choose resolution — 1080p for final output, 720p for faster iteration.
- Set aspect ratio — use
autoto match the image, or specify a ratio. - Set duration — use
autoor specify a value (5–20 seconds). - Run — submit and download your video.
Pricing
Billed per second of generated video, by resolution:
| Resolution | Cost per second |
|---|---|
| 1080p | $0.319 |
| 720p | $0.187 |
Best Use Cases
- Photo Animation — Bring portraits, landscapes, and product images to life.
- Marketing & Ads — Turn product photos into dynamic promotional videos.
- Storytelling — Animate illustrations and artwork for narratives.
- Creative Exploration — Experiment with motion starting from any visual.
Pro Tips
- Be specific about movement: "slowly zooms in", "pans left", "subject walks toward camera".
- Use
aspect_ratio: "auto"to preserve the original image's proportions. - Describe ambient sounds in your prompt for richer audio when
generate_audio: true. - Use high-quality, well-lit images for best video results.
Notes
image_urlis the only required field;promptis optional but improves motion control.- Accepted image formats: PNG, JPEG, WebP.
- Generation is asynchronous — submit, then poll for the finished video.
Related Models
- FLUX 3 Text-to-Video — Generate video from a text prompt alone.
- FLUX 3 First & Last Frame to Video — Interpolate between a start and end image.
- FLUX 3 Keyframes to Video — Pin multiple images to exact frame positions.
- FLUX 3 Extend Video — Continue an existing video clip.


















