FreeVideo

MiniMax H3 is MiniMax's general-purpose omnimodal generative system for understanding text, images, video, and audio and generating video with native 32 kHz stereo audio. It supports 4–15-second outputs at 24 FPS across a wide range of aspect ratios; the shorter side is 768 pixels by default, with 2K generation available through H3-Regenerate-2K. Its H3-Base-FL2VA variant supports text-to-video, first-frame-to-video, last-frame-to-video, and first-and-last-frame-to-video modes, while H3-Base-Ref2VA accepts mixed image, video, and audio references. The repository also provides a prompt-writing skill and style-specific video-generation skills for the MiniMax Hub canvas workflow. H3 is available through MiniMax's global and China APIs, web apps, and desktop apps; the video describes its weights as open and runnable at 768p.

ComfyUI is an open-source AI content-creation engine and diffusion-model GUI, API, and backend developed by Comfy-Org. Its visual node-graph interface lets users build and reuse no-code workflows for image, video, audio, 3D, and text generation, editing, and processing, including workflows using diffusion models, VAEs, text encoders, LoRAs, ControlNets, adapters, and upscalers. Workflows can be saved and loaded as JSON, exposed through App Mode, or integrated into applications through local API endpoints. The engine supports asynchronous queueing, partial graph re-execution, VRAM and RAM management, model offloading, quantized models, custom nodes, and fully offline core operation unless optional resources are requested. It can run locally on Windows, Linux, and macOS through desktop, portable, or manual installations, with support for NVIDIA, AMD, Intel, Apple Silicon, and Ascend hardware. Comfy-Org also provides an official paid cloud version.

h3-metal is a native plain-C and Metal inference engine for the MiniMax H3 video model on Apple Silicon Macs. It provides a command-line interface and Iris-style interactive session for prompt-to-video and prompt-to-audio generation, including synchronized stereo audio, first- and last-frame conditioning, and ordered Ref2VA image, video, and audio references. The CLI can inspect model layout and the selected Metal device, run prompt-to-media jobs, and retain exact BF16 prompt conditioning, the prepared diffusion transformer, and video decoder in memory so repeated prompts with different seeds avoid reloading and re-encoding them. Configurable controls include denoising passes, transition reuse, transformer layers, frame dimensions, seeds, and output files. The project is developed through incremental vertical slices covering deterministic host and model metadata, portable Metal block parity, prompt encoding, media generation, conditioning, and H3-specific Metal performance and memory optimization.

H3 Max is fal’s post-trained video-generation model, based on MiniMax’s open-weight video model. It combines model post-training with systems and hardware optimization to reduce generation time while maintaining video quality, supporting fast generation, interactive streams, and professional video workflows. Its continuous-video experiments can retain previous scene context and respond to new directions while a stream is running, with development focused on controllable camera movement, lighting, characters, motion, and lip sync.