What is Seedance 2.5 API
Seedance 2.5 API, accessible through Apiframe, is a REST API for generating cinematic video clips. It allows for the creation of single-pass videos up to 30 seconds in length, featuring synchronized native audio and supporting up to 50 multimodal references.
How to use Seedance 2.5 API
To use the Seedance 2.5 API, you can send a POST /v2/videos/generate request with your API key. The request body should include the prompt, model identifier (seedance-2.5), and specific seedanceParams. You can poll for the jobId returned in the response or provide a webhook_url to receive the result asynchronously. The API supports various parameters such as resolution, start and end images, audio generation, reference image/video/audio URLs, and a seed for reproducibility.
Features of Seedance 2.5 API
- Long-form Cinematic Video: Generates single-pass video clips up to 30 seconds.
- Multimodal References: Supports up to 50 references, including images, videos, and audio.
- Synchronized Audio: Co-generates audio (music, sound effects, dialogue, lip-sync) synchronized with the video.
- Multiple Resolutions: Offers 480p and 720p output options.
- Flexible Aspect Ratios: Supports aspect ratios from 21:9 to 9:16, plus an adaptive mode.
- Director-Grade Control: Allows for detailed camera control and multi-shot sequence descriptions.
- Local Editing: Enables region-level editing and video-reference editing.
- Multilingual Output: Supports native audio and on-screen text in multiple languages.
Use Cases of Seedance 2.5 API
- Storytelling & Short Films: Ideal for creating coherent narratives with consistent characters and visuals across scene changes.
- Ads & Product Promos: Maintain brand identity and product appearance across multiple generated clips.
- Social Media Content: Generate vertical clips with synchronized audio suitable for social platforms.
- Multilingual Campaigns: Localize content efficiently with multilingual audio and text generation.
Pricing
Pricing is based on a per-second output model, ranging from 18 to 47 credits per second of generated video, approximately $0.18 to $0.47 per second. The exact cost depends on the chosen resolution and options. A 12-second clip is estimated to cost between 216 and 564 credits (approximately $2.16 to $5.64). Users pay only for successful generations, with failed jobs being refunded. A unified credit balance is used across all models on Apiframe, and free credits are available to start.
FAQ
- What is Seedance 2.5?
Seedance 2.5 is ByteDance's advanced multimodal AI video model, capable of generating 30-second clips in a single pass with up to 50 multimodal references and native synchronized audio.
- What inputs does it accept?
It accepts text, images, audio, and video as references, with limits on the number of each type (e.g., 30 reference images, 10 reference videos, 10 reference audio tracks). A first frame can also be used as an anchor.
- Does it generate audio?
Yes, audio is co-generated in the same pass as the video, producing synchronized sound, music, effects, dialogue, and lip-sync.
- How long are the clips and what resolution?
Clips can range from 4 to 30 seconds in a single pass, at 480p or 720p resolution. Aspect ratios vary from 21:9 to 9:16.
- Can it edit and extend videos?
Yes, it supports region-level local editing and video-reference editing, allowing modifications while preserving other elements of the clip.
