Bloat Libvpx 2021 Jun 2026

VP8 is lean. VP9 is a beast. VP9’s entropy decoder and loop filter are algorithmic marvels, but they require large lookup tables. When you compile libvpx, you get VP9 by default. You cannot strip it out without editing the build scripts manually.

The encoder is notoriously slow, often taking significantly longer than competitors like x264 to produce similar quality. This "computational bloat" requires high CPU usage and long processing times. bloat libvpx

Yes and no.

To the uninitiated, "bloat" might sound like an insult. In this context, it’s a technical observation. "Bloat libvpx" refers to the phenomenon where the standard compilation of the library produces a binary that is significantly larger, slower to compile, or more resource-hungry than necessary for a given use case. VP8 is lean

The default ./configure optimizes for runtime detection , not binary size . It assumes you are Google, compiling once to run on millions of unknown servers. Consequently, it includes runtime dispatchers for every CPU flag. If you are compiling only for an ARM Cortex-A53, you don't need the NEON-optimized routines for a Snapdragon 8 Gen 3—but libvpx includes them anyway. When you compile libvpx, you get VP9 by default