FramePack Review — O(1) Long Video Generation on 6GB VRAM: ControlNet Creator's Architecture That Changes What Consumer GPUs Can Do

FramePack (April 2025) by Lvmin Zhang (lllyasviel, creator of ControlNet) applies context compression and inverted anti-drifting sampling to HunyuanVideo, enabling 60-120 second video generation on as little as 6GB VRAM. The key innovation is O(1) compute cost regardless of video length. Apache 2.0 license. 16,800 GitHub stars. No official MCP server. Rating 4/5.