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FastFlix vs Aviator: catalog facts
FastFlix	Aviator
Free Free and open source under the MIT licence.	Free Free and open source under the GPL 3.0 or later.
Windows	Linux
Supports H.264, HEVC and AV1 Hardware and software encoding options	Easy AV1 encoding without the command line Uses SVT-AV1 and Opus
Focused on encoding, not editing Encoder options can be overwhelming for beginners	Limited to AV1 video and Opus audio output Linux only
Downloadable app	Downloadable app
Open source	Open source
License: MIT	License: GPL-3.0-or-later
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 1, 2026

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