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Transition vs Videomass: catalog facts
Transition	Videomass
Free Free and open source under the GPL-3.0-or-later licence.	Free Free and open source.
Linux	Windows, macOS, Linux
Simple video-to-audio conversion Native libadwaita interface	Access to FFmpeg features without the command line Handles several tasks at once
Linux only Converts to audio only, with no video output	Video downloading moved to the separate Vidtuber app Many options can be overwhelming for simple conversions
Downloadable app	Downloadable app
Open source	Open source
License: GPL-3.0-or-later	License not stated
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 24, 2026

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