Bigasoft MKV Converter 

MKV is a video format that can incorporate clips, audio content, subtitles, and metadata. Unfortunately, not many Mac OS X applications and media devices, like iPhones or Android tablets, support this format. Bigasoft MKV Converter provides you with a solution for this problem by letting you convert the Matroska videos to popular formats, such as MP4, MOV, AVI, 3GP, and many others.

The utility features a highly-intuitive interface, with simple-to-configure output settings and an integrated media player. Furthermore, it gives you access to several video editing options which come in handy if you need to trim, crop or watermark your MKV files. I also like the fact that you can attach subtitles to the input clips.

Bigasoft MKV Converter lets you choose from a wide variety of output formats which are compatible with dozens of media devices (mobile phones, tablets, etc.) as well as various Mac apps, like iMovie, Final Cut Pro, etc. You can select individual output profiles when importing more than one MKV file.

The input formats list isn't limited to just MKV. You can load various types of videos and audio files, like MP4, AVI, QT, WAV, MP3, and many others. So, this application is much more than its name implies.

With that being said, Bigasoft MKV Converter proves to be a reliable solution for converting media files on your Mac. Plus, it's affordable.