Thanks to a collection of various codecs in K-Lite Codec Pack one can play various audio and video formats generally not supported by Microsoft operating system itself and its software. This codec pack includes such formats as AVI, WMV, MP4, MOV, MKV, FLV, MTS, 3GP and more. Unfortunately, K-Lite Codec Pack only works on Windows and there is no Mac alternative yet.
So here we gathered several solutions if you are looking for something like “K-Lite Codec Pack Mac” to play various files on your Mac.
Elmedia Player is a great K-Lite codec pack for Mac alternative that supports pretty much any file format out of the box. This player comes packed with all codecs one might need, that don't conflict with anything on your system.
Elmedia offers a smooth and enjoyable playback and has multiple customizable features, including loading of subtitle files automatically and manually, fixing issues with interruptions or slowdowns, deinterlacing, and correcting any sync issues between audio and video.
PRO version that can be purchased additionally allows streaming content to Apple TV, changing video playback settings, taking precise screenshots during the movie or even converting a whole video into the series of screenshots in TIFF, PNG, or GIF format. Additionally to serving as a K-Lite codec pack for Mac alternative Elmedia Player PRO is an online video downloader.
Mac users can try Perian which was a powerful solution in the previous Mac OS versions, however it was discontinued and doesn't work on the latest Mac OS versions 10.8 Mountain Lion, 10.9 Mavericks, 10.10 Yosemite, 10.11 El Capitan and 10.12 Sierra.
You can always try converting the files into another format that is supported by your player. However, prepare for a wait, as conversion process usually takes time. It depends on whether you are using an online conversion service f.ex. ClipConverter or a downloadable converter like Freemake Video Converter or MacX Video Converter.
We do not recommend to install codecs or use converters (reasonable cases are noted above).