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x265-butler2.57.0

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Encoder Benchmark

Measure VMAF / size / encode-time for your encoder × preset × quality matrix on representative samples.

File IDs

Comma-separated. 1-50 files.

Review & override defaults

Native · 1 encoder · 3 presets · CRF 23,28

Mode

Native Sweep (raw CRF / CQ values, ~1× cost)VMAF-anchored (target VMAF buckets, ~3-4× cost)

Encoders

libx265hevc_nvenchevc_qsvhevc_vaapi

Presets

libx265

ultrafast (fastest, lowest quality)superfastveryfastfasterfastmediumslowslowerveryslowplacebo (slowest, best quality)

Native quality values

Quality values 0 to 51, typically 20 to 28.

Sample configuration

Samples per file

Sample duration (s)

VMAF model

Already on defaults

→ Persist defaults in Settings

Fill in the file IDs to start the benchmark.