From Convert Audio Free:
Free MKV Converter is a video converter which enables you to convert all your Matroska videos to most popular video formats such as mpg, mov, mp4, avi, wmv and flv file formats and play them smoothly in your PC or your portable video players. Matroska videos with MKV extension are best known for their HD playback capabilities with less file size in contrast to other video files. You can convert them with this Free MKV Converter easily. Its user interface is very friendly and you can easily do your conversion jobs; you specify the output folder and import files to be converted and you are ready to go. A preview windows is ready to show you the contents of videos with the ability of Play, Stop and Mute the file. You can select a folder and load its files or you can select separate files from your hard drive from different places. Also, you can remove single files from conversion list or you can remove a folder and all its contents. There is a checkbox next to every file which enables you to select which file you want to convert. There are no editable settings and this is great because most people don't know what they do with different settings; application uses the input settings and converts videos based on source files.