SulphurAI / Sulphur-2-base

## Overview Sulphur 2 Base is an open-weights video generator from SulphurAI. It fine-tunes the Lightricks LTX 2.3 video diffusion stack for prompt-following motion and stable shots. You describe a scene and it synthesizes a short clip as an MP4, suitable for drafts and storyboards. You can also anchor the motion with a starting frame, or lock the ending with a final frame. ## What you can build - Product shots with slow dolly, orbit, or push-in camera moves - Social clips for Reels, Shorts, and TikTok in vertical or square layouts - Storyboard clips for pitch decks and pre-visualization - Image animation from a single still, while keeping subject identity consistent - Shot variants for lighting, lens, and composition exploration ## Inputs - A written scene description that explains subject, setting, lighting, and camera motion - An optional starting-frame image (JPG or PNG). This sets the first frame for image-to-video - An optional ending-frame image (JPG or PNG). This steers the final frame for the clip - A clip length selection in seconds. Use auto, or choose common short lengths like 6, 8, 10, or 20 - A target resolution selection. You can request 1080p, 1440p, or 2160p output - An aspect ratio selection. Use auto, or choose 16:9, 9:16, or 1:1 - A numeric seed for repeatable variations. Use an integer in a typical range up to 9,999,999 - A distillation strength control from 0.0 to 1.0. Higher values favor the fast distilled path ## Outputs The model returns a single MP4 video clip. The clip follows the requested duration, resolution, and aspect ratio settings. When you provide a starting image, the first frame is anchored to that reference. When you provide an ending image, the motion steers toward that final frame. Typical public workflows focus on silent video output, so don’t expect generated audio. ## Limitations - Long clips can drift in identity, clothing details, and fine textures - On-frame text is often garbled, especially for signs, UI, and subtitles - Higher resolutions and longer durations raise memory pressure and failure risk - Low-quality inputs can break motion. Blurry JPGs, heavy compression, or watermarked images often cause artifacts - Busy scenes with many humans can produce odd anatomy or unstable hands - “First and last frame” control can reduce creativity if the two frames conflict ## Safety & compliance Sulphur 2 Base is often described as having fewer creative blocks than many hosted video tools. You still must follow Wiro’s usage rules and local laws for every generation. The open-weights release is governed by the LTX-2 Community License Agreement, which also covers derivative models and distributions. Avoid generating illegal content, non-consensual sexual content, or content that violates privacy rights.