MKV, also known as Matroska, is a multimedia container format. It is another container format that similar to AVI. It is an open source container that houses an unlimited amount of video, audio, and even subtitles data in a single file. Its primary purpose is to create a unifying or universal format for multimedia storage with the benefit of being completely open source.
Because iPad (iPad 2 included) only supports the following video formats:
H.264 video up to 720p, 30 frames per second
MPEG-4 video, up to 2.5 Mbps, 640 by 480 pixels, 30 frames per second
Motion JPEG (M-JPEG) up to 35 Mbps, 1280 by 720 pixels, 30 frames per second
If you want to play MKV on iPad, you need a MKV to iPad converter for mac to hlep you.
MKV to iPad Converter for Mac is a professional converting software to convert MKV to iPad, MKV to iPad H.264, MKV to iPad MPEG-4, MKV to iPad M4V, and then import/put your MKV file to iPad, iPad Wi-Fi, iPad Wi-Fi + 3G, iPod, iPhone, etc. on Mac for playback anytime anywhere.
In addition, with Mac MKV to iPad Converter, you can convert other popular formats to iPad freely, such as convert AVCHD to iPad, AVI to iPad, YouTube to iPad, MPG/MPEG to iPad, MOV to iPad, WMV to iPad...on Mac.
How to Convert MKV to iPad on Mac
Step 1. Free download Mac MKV to iPad converter, install and launch it, you'll see a friendly interface.
Step 2. Click Add File button to load MKV file.

Step 3. Set output format and select output folder.
Step 4. Click Convert button to finish the MKV to iPad conversion quickly.
Click "Trim", "Crop" , "Rotation" or "Video Adjustments" button, you can then customize your MKV videos.
Crop: Enables you to customize the frame size (16:9, 4:3 etc) and cut off black margins of the videos.
Trim: You can set the start time and end time of parts you want to convert.
Rotation: Allows you to rotate video for your iPad.
Video adjustment: Add special effects to video, such as brightness, contrast, saturation, apply different movie styles.
Step 5. Hit converter button to convert MKV to iPad
if you are windows user, the Windows version can convert MKV to MOV, MKV to MP4,MKV to AVI fast,to convert mkv to ipad is easy too.

