MKV(Matroska Video) is an open standard free container format that can hold an unlimited number of video, audio, picture or subtitle tracks inside a single file. If you have some MKV movies on computer, you may want to convert MKV to AVI so that you can play the video files on your Creative Zen, Blackberry, Sandisk Sansa, etc. In this article, you will learn how to convert MKV files to AVI with subtitles in HD (high definition) quality.
To convert MKV video to AVI with subtitles, you need a video converter tool. Video Converter Ultimate is a good video converter tool that can help you fulfill your task. With it, you can fast convert MKV videos to AVI and all other popular video formats, such as AVI, WMV, MPEG4, MP4, FLV, 3GP, ASF, MKV, M2TS, MTS, etc. Additionally, it is also a DVD ripper and DVD burner, which is fully compatible with Windows 7. Now just download it for free and check out the guide below to convert your MKV videos to AVI with subtitles easily and fast.
After downloading, install and run Video Converter Ultimate. Then Click on the "Add Files" button to load the?MKV file you want to convert. You can add multiple?MKV files at a time. All loaded files can be previewed on the right viewing window and you can take snapshots of the movie scenes you like.

Click "Profile" drop-down list to choose "AVI" under "Common Video" as output format. If you like, you can click "Advanced" to change video and audio parameters, such as video size, audio bitrate, etc and save them as your profile.

Click "Edit" button, switch to "Subtitle" tab. Just select "Enable the plug-in subtitle" checkbox, and then you can add plug-in subtitles to MKV files. The supported subtitle files are .srt, .ass, .ssa.
Just click "Start" to start converting MKV video files to AVI with subtitles. After the conversion, you can click "Find Target" to access output files directly.
Here is the video tutorial on how to convert MKV files to AVI: