RecordMyDesktop is a free open source linux desktop screencasting program and it producing an ogg encapsulated theora and vorbis output file.
To install recordMyDesktop on linux mint 11
1.Open linux mint software manager.To open software manager in linux mint, click Menu button and select software manager under system.
2.Type recordMyDesktop in the software manager search field and select gtk-recordMyDesktop.
3.click the install button.
4.Type your ubuntu password if needed.
5.After the successful installation close software manager and click start menu.
6.Type recordMyDesktop in the search field and click Desktop recorder.