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

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