It is the tool to help you convert MKV to AVI video format with subtitles. MKV and AVI are both video container format, AVI is more widely used nowadays while MKV is becoming more and more popular, MKV is an envelope for which there can be many audio, video and subtitles streams, allowing the user to store a complete movie or CD in a single file. And this software is designed to convert your mkv files to various video, audio and HD Video formats,including avi, wmv, mp4, 3gp, mpg, mpeg, mod, vob, aac, ac3, aiff, mp3, TS, MTS, M2TS, HD WMV. HD MOV, HD. h.264, etc. It is also an MKV converter, MKV splitter and MKV editor. It changes the frame size, frame rate, video compression codec and audio compression codec. And it provides you with video joinning, trimming, cropping and adding watermark effect, video effecting functions. So you can get well-preparation ahead of converting.