SqueezeTube lets users batch convert, tag, and add videos to iTunes in one step. Get all media ready for iTunes and iOS devices: just drop your video files on to the application drop area and that's it. Also supports subtitles in MKV's and SRT format.
Supported formats: MKV, MOV, M4V, MP4, MPG, AVI, and EyeTV recordings
Note: Now requires OS X 10.8 or later