Results by codec
Each format's presets beside the reference encoders for that format, on the held-out clips (fresh, and all held-out) and on the development clips. Negative is fewer bits than the zero line for the same quality. Speed is single-thread 720p encode.
Read the columns together. The development clips are the ones we tune beside: for most of
our presets they give more favourable numbers than the held-out clips, which are videos none of our
tuning used (most come from the same public collections as the development clips). AV2 is a draft standard, not a finished one: we track
its reference software AVM at v1.0.0. VVC and AV2 have no real-time reference encoder on these charts; their nearest comparisons are
our HEVC and AV1. Method, versions and command lines.