● Covered by 1 source · 1 reportMedium impact1 neutral
Video Rebirth releases HyperFlow H3 Flash, a 14B parameter video+audio diffusion model
Key points
- HyperFlow H3 Flash is a compressed video+audio diffusion model.
- Model size reduced from ~31B to 13.7B-13.9B parameters.
- Generates 5.2-15s video at 24fps with 32kHz stereo audio.
- Supports 4, 6, or 8 sampling steps without CFG.
Model Release and Compression
Video Rebirth has introduced HyperFlow H3 Flash, a new video and audio diffusion model. This model is a compressed version of their existing MiniMax-H3 transformer, reducing its parameter count from approximately 31 billion to 13.7-13.9 billion. The compression allows for more efficient operation while maintaining video and synchronized stereo audio generation capabilities.
Performance and Output Specifications
HyperFlow H3 Flash generates video clips ranging from 5.2 to 15 seconds in length at 24 frames per second, with a default resolution of 1344x768 pixels. Each video is accompanied by a 32 kHz stereo soundtrack. The model operates with 4, 6 (default), or 8 sampling steps and does not use classifier-free guidance (CFG).
In terms of speed, generating a 5.2-second clip in 6 steps takes 8.7 seconds on 4x B200 GPUs, 36 seconds on 1x H200 GPU, and 92 seconds on 1x RTX 5090 GPU. NVIDIA SOL-H3 supports real-time operation of HyperFlow H3 Flash on 4x Blackwell GPUs.
Hardware Compatibility and Footprint
The model's minimum footprint for the Q4_K_M version is 9.1 GB, while the Q8_0 version requires 14.9 GB. This allows it to run on 24 GB and 32 GB GPUs in PCs equipped with 16 GB of system RAM. For PCs with 64 GB or less system RAM, GGUF is recommended. For data-center GPUs or 24 GB+ RTX GPUs with at least 69 GiB of system RAM, INT8 convrot is suggested.
Integration and Setup
All model weights are available through VideoRebirthAI/hyperflow-h3-flash. A full setup guide is provided in the integrations/README.md file. Quick start options include integration with ComfyUI, Unsloth Studio, and stable-diffusion.cpp. These integrations facilitate loading the model, downloading necessary components like text encoders and VAEs, and running predefined workflows or custom setups.
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Primary sources
GitHub cmc_internal/api GitHub github/collect GitHub Video-Rebirth/hyperflow-h3-flash GitHub _private/browser GitHub get-started/accessibility GitHub en/copilotReporting from
Video Rebirth has released HyperFlow H3 Flash, a compressed version of its MiniMax-H3 model, which generates video and synchronized stereo audio. This new model is significantly smaller at 13.7B-13.9B parameters, down from ~31B, and can generate 5.2-15 second clips in 4-8 steps, enabling faster inference and broader hardware compatibility.