Desc Brutally hardcore; obsessive; excessively-optimized A complete framework Lowest (V)RAM Auto & Biased NO crates/libs & stdlib NO system-side dependency NO VapourSynth/FFmpeg/CLI call Feats Zones Trim/splice Scene-detect Stop/Resume Chunk encode Custom muxer Parse input data CPU/GPU decode AV* - H26* codec Multi-AR-safe autocrop Pipe: cmd - | xav i.mkv: Slower than native Target quality: CVVDP & Butteraugli & SSIMU2 Opus with auto rate calc & downmix & loud-norm (AC-4 std) How ./build.sh xav -h