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FFmpeg vs Kvazaar: catalog facts
FFmpeg	Kvazaar
Free Free and open source. The codebase is mainly LGPL 2.1 with some components under the GPL…	Free Free and open source under the BSD-3-Clause license.
Windows, macOS, Linux, Command line	Windows, Linux, Command line
Handles practically every container and codec there is Remuxes without re-encoding, so a container change is instant and lossless	Provides HEVC encoding from the command line Offers presets and manual encoding options
Command line only, with syntax that punishes guessing Argument order matters in ways that are not obvious	Requires raw video input The project describes itself as still under development
Downloadable app	Downloadable app
Open source	Open source
License: LGPL-2.1	License: BSD-3-Clause
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 21, 2026	Official website Full listing and sources Checked October 8, 2026

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