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Av1an vs FastFlix: catalog facts
Av1an	FastFlix
Free Free and open source, developed under the rust-av project on GitHub.	Free Free and open source under the MIT licence.
Command line	Windows
Parallel chunked encoding makes use of all CPU cores Supports AV1 and other encoders from one tool	Supports H.264, HEVC and AV1 Hardware and software encoding options
Command-line only, with no graphical interface Relies on separately installed encoders and tools	Focused on encoding, not editing Encoder options can be overwhelming for beginners
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0	License: MIT
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

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