MKV, short for Matroska Video, unlike MP3, MP4 and things like those, is not a media format but an extensible open standard Audio/Video container. We can definite it as a multimedia container.
As we know, the new iPhone 4 does not support MKV format. So if you want to play your MKV files on iPhone 4, you should convert MKV to iPhone 4 supported format first. Then how to convert MKV to iPhone 4? Is there any easy-to-use MKV to iPhone 4 Converter?

Here is the solution: iFunia iPhone 4 Video Converter for Mac is a specialty to dedicatedly convert MKV to iPhone 4 videos. This guide is going to help you easily convert between several video formats like your favorite MKV file to MP4 for your iPhone 4.

What You Will Need
* A Mac computer
* iFunia iPhone 4 Video Converter for Mac, download a trial to give it a try
* The MKV file(s) you wish to convert
* iTunes to sync your iPhone 4


Getting Started
Step 1 Add MKV video files to Mac iPhone 4 Video Converter
After you launch the iFunia iPhone 4 Video Converter, click the "Add..." button and select the MKV file you wish to convert. This iPhone 4 video converter for Mac supports drag-drop and batch conversion, so you can import and convert several MKV files at a time.


Step 2 Select output profile and change iPhone video and audio settings
iFunia iPhone 4 Video Converter for Mac has several video profiles to choose for iPhone output format. Select an MP4 profile from the list, in this case, select "iPhone 4 MPEG-4(640*480) Video (*.mp4)". Using this profile will yield a good quality video for your iPhone 4. You can also change the Resolution, Encoder, Bit rate and Frame rate to get the best quality of MKV video on iPhone. The size of the iPhone file depends a lot on these settings.


If you would like you may select the output folder, by default iFunia iPhone 4 Video Converter for Mac will save the file in the default folder as the original file.

Step 3 Start MKV to iPhone 4 Conversion
After all the settings, just click 'Start' to convert MKV to iPhone 4 on Mac OS. After a few minutes waiting, you can play the converted MKV files on your iPhone 4.

Step 4 Sync video to iPhone 4 via iTunes
Finally you want to use iTunes to add the output file to your library. Usually when you select "Add File to Library..." the file will be placed in your Movies section once you've done that you're all set and ready to sync with your iPhone 4. If you've never synced your iPhone before checkout Apple's detailed activation and syncing the iPhone video, the syncing segment is about half way into the video.

Tips:
iFunia iPhone 4 Video Converter for Mac isn't only for the converting MKV to iPhone 4, it can also convert the following formats to iPhone 4 compatible formats: AVI, MPG(MPEG), WMV, MP4, MOV, VOB, ASF, RM, RMVB, 3GP, 3G2, FLV, MKV, MOD, TOD, TS, DV, H.261, H.264, M4V, DAT, AVCHD Video (*.mts, *.m2ts), H.264/MPEG4 AVC Video(*.m2ts;*.mts), Quick Time HD Video (*.mov), WMV HD Video (*.xwmv), Audio-Video Interleaved HD Video (*.avi), MPEG2 HD Video (*.mpg; *.mpeg), MPEG4 HD Video(*.mp4), MPEG-2 TS HD Video (*.ts), HD FLV Video(*.flv), NUT, YUV, NSV, MPV, MJPG, MJPEG, DIF, DVR-MS, QT, etc.

If you are Windows users, try iFunia iPhone 4 Video Converter for Windows.