Release v3.1.0

Seedance 2.0 Upgrade

Breaking Changes

• Removed: quality, image_url, end_image_url, camera_fixed, seed, enable_safety_checker
• Renamed: image_url → first_frame_url, end_image_url → last_frame_url
• duration changed from string (2-12s) to integer (4-15s)
• resolution now 480p/720p only (removed 1080p)
• Model IDs changed to bytedance/seedance-2 / bytedance/seedance-2-fast

New Features

• mode: standard (quality) or fast (iterative workflows)
• reference_image_urls: up to 9 reference images for style/subject guidance
• reference_video_urls: up to 3 reference videos for motion guidance
• reference_audio_urls: up to 3 audio clips for sound-guided generation
• generate_audio: native audio generation (default: true)
• web_search: prompt enhancement via web search
• nsfw_checker: content filtering
• adaptive aspect ratio: matches input frame dimensions
• Prompt length expanded to 3-20000 characters