An old question that frequently asked was: Is there any software that can play mkv video file without jerking/lagging in PPC powerbook/powermac? With the myth of Mac OS X Snow Leopard, the issue of playing MKV on PowerMac seems to have been greatly improved. However, it is still not always a smoothly journey to playback MKV on Mac OS, such as play MKV on All-new MacBook Air.
MKV is simply a container, and can contain any bitrate video track the author chooses, this means that MKV isn't the reason you're experiencing choppiness, rather, the size of the video stream contained in the MKV file.
More than likely, you're trying to play a hi-definition (720 lines of vertical resolution or greater) MKV video file, which may be converted from Blu-ray/AVCHD or other source. And they require a lot of processor power to do. Most MacBook Air computers, short of the G5s, do not have this power, or teeter on the fine line between acceptable and unacceptable.
Some of your MKV source may ripped from Blu-ray disc, and to keep the Blu-ray will feature 1080p video, a DTS-HD Master Audio 5.1 soundtrack, and supplements to your All-new MacBook Air/MacBook Pro, you need a powerful MKV to MacBook Air/MacBook Pro Converter Software. For example, WinX HD Video Converter Deluxe is a good one MKV to MacBook Air/MacBook Pro Converter. Free Download >>
Other Source Related MKV
Convert M2TS to MKV: convert BDAV M2TS, AVCHD M2TS to MKV keeping best quality
Convert MKV to MP4: make MKV video most friendly on your Windows/Mac OS computer
Convert MKV to iPad: Play and watch HD MKV movie with iPad 1024x768 LED display
Convert MKV to iPhone: enjoy 1080p MKV film on iPhone 4 960-by-640 Retina display
Related External Source
: Matroska MKV: MKV Video Knowledge from MKV Official Site