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fre:ac vs FFmpeg Batch AV Converter: catalog facts
fre:ac	FFmpeg Batch AV Converter
Free Free to use; the project accepts donations.	Free Free and open source.
Windows, macOS, Linux	Windows, Linux
Wide range of input and output formats Converts whole libraries and keeps folder structure	Batch conversion with drag and drop Full access to FFmpeg parameters and presets
Releases are infrequent Interface is functional rather than modern	Linux use requires Wine-Mono Knowing FFmpeg options helps to get the most from it
Downloadable app	Downloadable app
Open source	Open source
License not stated	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked September 23, 2026	Official website Full listing and sources Checked September 23, 2026

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