BLACKFORESTLABS FLUX 3 First & Last Frame to Video
Generate a video between a start frame and an end frame using FLUX 3.
What it does
BLACKFORESTLABS FLUX 3 First & Last Frame to Video, in practice.
FLUX 3 First & Last Frame to Video generates a smooth video transition between two images. Provide a start frame and an end frame, add a prompt describing the motion in between, and the model fills in a cinematic clip that begins and ends exactly on your images — with optional native audio.
- Precise start and end control Pin both the opening and closing frames for exact transitions.
- Native audio generation Produce video and synchronized audio in a single request.
- Explicit duration required Duration must be set explicitly so the model knows where to place the end frame.
- Flexible aspect ratios `auto`, `21:9`, `2:1`, `16:9`, `4:3`, `1:1`, `3:4`, or `9:16`.
- High resolution output Generate videos in 720p or 1080p.
Run BLACKFORESTLABS FLUX 3 First & Last Frame to Video
from $0.26/secParameters
What you can set.
| Parameter | What it does | Options |
|---|---|---|
prompt | Text description of the video to generate. | |
start_image_url | URL of the image used as the first frame of the video (PNG, JPEG, or WebP). | |
end_image_url | URL of the image used as the last frame of the video (PNG, JPEG, or WebP). | |
aspect_ratio | Aspect ratio of the generated video. auto lets the model choose. | auto 21:9 2:1 16:9 4:3 1:1 3:4 9:16 |
resolution | Resolution of the generated video. | 720p 1080p |
duration | Duration of the generated video in seconds. An explicit duration is required to place the end frame. | 5 6 7 8 9 10 11 12 13 14 15 16 |
generate_audio | Whether to generate audio for the video. | default True |
safety_tolerance | Safety tolerance level. 0 is the strictest and 4 is the most permissive. | default 2 |
seed | Random seed for reproducibility. |
Sample prompt
The prompt behind the sample.
A mysterious traveler moving through a massive space-time tunnel, surrounded by swirling galaxies, glowing energy waves, and fragments of different eras floating in the cosmic vortex. The character reaches forward as countless timelines unfold around them, ancient civilizations, futuristic cities, and unknown worlds appearing in the distance. Epic cinematic composition, dramatic lighting, sci-fi atmosphere, ultra realistic, IMAX movie style, volumetric light, 8K, masterpiece.
aspect_ratio: 9:16resolution: 720pduration: 5generate_audio: Truesafety_tolerance: 2FAQ
Short answers.
How much does BLACKFORESTLABS FLUX 3 First & Last Frame to Video cost?
Pricing starts at $0.26 per second of video at the base resolution; higher resolutions and longer durations cost more. An 8-second clip at the base tier is about $2.04. Usage is billed per request from your balance — no subscription.
Does BLACKFORESTLABS FLUX 3 First & Last Frame to Video run uncensored here?
No. Black Forest Labs applies its own content policy to this model regardless of where it is called from. For a route without an extra platform filter use Uncensored MiniMax H3; this page lists BLACKFORESTLABS FLUX 3 First & Last Frame to Video for everything else it does well.
What does BLACKFORESTLABS FLUX 3 First & Last Frame to Video take as input?
It is a text-to-video model. Generate a video between a start frame and an end frame using FLUX 3.
How do I use it?
Enter an invite code to open Chat with the model loaded, or join the waitlist. We open seats in batches and track which models are requested most.
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