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Aviator vs Shutter Encoder: catalog facts
Aviator	Shutter Encoder
Free Free and open source under the GPL 3.0 or later.	Free Free and open source under the GPL. Donations are welcomed.
Linux	Windows, macOS, Linux
Easy AV1 encoding without the command line Uses SVT-AV1 and Opus	Professional codecs including ProRes, DNxHR, AV1 and VP9 alongside the usual ones Lossless cut, trim, remux, stream extraction and audio replacement
Limited to AV1 video and Opus audio output Linux only	The interface exposes a lot at once and takes orientation Java-based, so it is a heavier install than the FFmpeg it drives
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License: GPL-3.0
No account needed	No account needed
Works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked September 21, 2026

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