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ab-av1Av1an
Free

Free and open source under the MIT licence.

 Free

Free and open source, developed under the rust-av project on GitHub.

Windows, Linux, Command line Command line
  • Finds the CRF automatically from a VMAF target
  • Fast VMAF sampling instead of full trial encodes
  • Parallel chunked encoding makes use of all CPU cores
  • Supports AV1 and other encoders from one tool
  • Command line only
  • Needs ffmpeg with the relevant encoders and VMAF installed
  • Command-line only, with no graphical interface
  • Relies on separately installed encoders and tools
Downloadable app Downloadable app
Open source Open source
License: MIT License: GPL-3.0
No account needed No account needed
Works offline Works offline

Checked October 2, 2026

Checked October 2, 2026

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