3 notes
How Astropad's LIQUID protocol dynamically switches between tile-based encoding and H.264/HEVC based on content motion. Covers the decision algorithm, hysteresis, seamless transitions, and AIMD rate control.
Deep dive into Astropad's tile-based LIQUID protocol: GPU-accelerated tile diffing with Metal compute shaders, adaptive codec switching between tiles and H.264/HEVC, LZ4 compression, and the architecture that achieves 16ms end-to-end latency.
A comprehensive reverse engineering analysis of Astropad Workbench (codename Stargate), revealing the internal architecture of the LIQUID protocol — a Rust-based tile rendering engine using QUIC transport, GPU-accelerated diffing, and adaptive H.264/HEVC encoding.