What is Seedance 2.5 Spicy?
Seedance 2.5 is ByteDance's image-to-video model, and the Spicy variant is its uncensored build. You upload a still image, describe the motion, the camera move and the mood you want, and it animates that frame into a cinematic clip with sound. Nothing to install, no GPU, no setup — it runs entirely in your browser.
It is the first non-Wan video model on NightWaveAI, so it is worth trying alongside Wan 3.0 and Wan 2.7 on the same source image — the two families read prompts differently and tend to make quite different choices about motion.
Key features
Clips up to 30 seconds
Choose any length from 4 to 30 seconds on a single slider, and pay only for the seconds you generate.
Built-in audio
Sound is generated together with the video and stays in sync with the action on screen. There is no separate audio pass, and it costs nothing extra. Toggle it off if you would rather add your own.
First and last frame control
The first frame is where your video starts. Add an optional last frame and the motion resolves exactly there, which lets you direct a specific beginning and ending rather than hoping the model lands it.
Fast and stable
Seedance is built for throughput rather than maximum fidelity, so generations come back quickly and hold a consistent look across a batch — useful when you are iterating on one image.
Uncensored
The Spicy build has no content filter, so adult and NSFW prompts generate as written. You must be 18 or over to use it.
How to generate a video
- 1
Upload a first frame image as a JPG or PNG up to 20MB. Optionally add a last frame to control exactly how the shot ends. The aspect ratio of your video follows the image you give it.
- 2
Describe the motion you want. Mention the sounds you expect too, since Seedance generates audio alongside the video. You can also generate a prompt from your image automatically for 1 credit.
- 3
Pick a duration between 4 and 30 seconds, then generate. Most videos finish in 2 to 5 minutes and are saved to your gallery automatically.
Frequently asked questions
What is Seedance 2.5 Spicy?+
Seedance 2.5 Spicy is ByteDance's uncensored image-to-video model. You give it a still image and a description of the motion you want, and it animates that image into a cinematic clip with synchronized audio. It runs in your browser on NightWaveAI with nothing to install.
How long can a Seedance 2.5 video be?+
Anywhere from 4 to 30 seconds, set with a single slider. Most image-to-video models stop at 5 or 10 seconds per clip, so longer shots normally mean stitching several generations together.
Does Seedance 2.5 generate audio?+
Yes. Audio is produced together with the video and stays synchronized with the on-screen action, so there is no separate sound step. Describing the sounds you want in your prompt gives you more control over the result. You can also switch audio off before generating.
What is the last frame image for?+
It is optional. The first frame is where your video begins; if you also supply a last frame, the generated motion ends exactly on that image. It is useful when you need a shot to start and finish in specific poses rather than letting the model decide the ending.
How much does Seedance 2.5 cost?+
Seedance 2.5 is billed per second of video, so a 5-second clip costs 125 credits and the price scales with the length you choose. Credits are purchased in packs starting at $4.99, and every user also gets one free generation per day.
What resolution does it output?+
Videos are generated at 480p, and the aspect ratio adapts to the image you upload. If you want a higher-resolution result, run the finished clip through the upscaler.
What image formats can I upload?+
JPG and PNG files up to 20MB, for both the first and last frame. Finished videos are saved to your gallery and can be downloaded as MP4 files.