Compare software

MKV Muxing Batch GUI vs Subler: catalog facts
MKV Muxing Batch GUI	Subler
Free Free and open source under the GPL-2.0 licence.	Free Free to download from the project's GitHub releases.
Windows, Linux	macOS
Batch processing of many videos at once Separate options for subtitles, audio, chapters and attachments	Muxes tracks from MOV, MP4 and MKV into MP4 without re-encoding Creates TX3G and WebVTT subtitles that work on Apple devices
Output is MKV only Development has been quiet since early 2024	macOS only, requires macOS 10.13 or later Outputs MP4 only
Downloadable app	Downloadable app
Open source	Open source
License: GPL-2.0	License not stated
No account needed	No account needed
Works offline	Not stated if it 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.