How to Convert MKV to AVI Format
The Matroska Multimedia Container is an open-source format that wraps video, audio and text tracks into a single package. Matroska video files, or MKVs, are becoming popular with consumers looking to store TV shows and movies in compressed format. Unfortunately, many programs don't recognize them, so you might have to convert your MKV into an AVI for it to play correctly in your video software.
Download and install the MKV-to-AVI Converter. It's free to try, but you'll have to pay for it if you want to output video files that are more than one minute long.
Run the converter by double-clicking its desktop icon or by clicking its shortcut in the "Programs" folder of the Start Menu.
Click the folder labeled "Open Video," and search your computer for the MKV file you wish to convert. It should be easy to find, because the converter won't recognize any other video file formats during this search.
Open the "Options" menu before converting the file. This allows you to adjust the video properties and output destination of the final AVI file.
Convert the MKV file to AVI format when you're ready by clicking on the "Convert" button in between the "Options" and "Help" buttons.
Locate the output file on your hard drive. If you can't find it, perform a search for AVI files using Windows Search.
Play the AVI file using Windows Media Player or another video player to verify the conversion results. Make sure the video's length and quality are the same as that of the original MKV clip.