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ab-av1HandBrake
Free

Free and open source under the MIT licence.

 Free

Free and open source; there is no paid edition.

Windows, Linux, Command line Windows, macOS, Linux, Command line
  • Finds the CRF automatically from a VMAF target
  • Fast VMAF sampling instead of full trial encodes
  • Built-in device presets get a usable conversion without learning encoder settings
  • Writes MP4, MKV and WebM with AV1, H.265, H.264, MPEG-4, MPEG-2, VP8 and VP9 encoders
  • Command line only
  • Needs ffmpeg with the relevant encoders and VMAF installed
  • It cannot read discs that carry copy protection
  • Every conversion re-encodes, so it costs time and some quality
Downloadable app Downloadable app
Open source Open source
License: MIT License: GPL-2.0
No account needed No account needed
Works offline Works offline

Checked October 2, 2026

Checked September 20, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.