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NOTE: This release and version documentation is no longer being updated. Please see our announcements on our blog or our GitHub releases.

Mumble 1.2.1, the successor of 1.2.0 and has been released on 07.01.2010. The primary focus of this release was to improve the performance of the new CELT codec under packet loss, but we also worked hard to improve the usability and added some nice new features. The list can be found below.


My mumble full snap 121.png

New features

Extended Audio wizard

Audio wizard qn page.png

The audio wizard received a new page which contains codec quality and latency settings as well as Text-To-Speech to Sound pack switching. We hope this will make it easier for users to individualize their settings to get the best experience out of Mumble.

Windows 7 jumplist support


As the new taskbar in Windows 7 got some nice, new functionality took advantage of that and implement jumplist support in Mumble. This will enable you to connect to your favorite servers quicker as an alternative to the full-blown server browser.

Improved channel tree

In order to increase your usable screen real estate we improved the channel tree by unifying the name and flag columns.

Mumble client 1.2.1 improved channel tree.png

Show talking state in tray

State in tray.png

Besides your muted and deafened status the new release will, by default, also display your current speaking status in the tray icon. That way you can easily see whether you are connected at all, talking or whispering.

Other changes

  • Updated CELT codec with enhanced packet loss concealment (less robots)
  • Added ability to colorize log messages with skins
  • Added the ability to disable individual positional audio plugins
  • Enhanced always on top adjustability
  • Volume attenuation for other applications can now also trigger on local speech
  • Lots of bugfixes
  • Various positional audio bugfixes, improvements, and additions