What are some alternatives?
When comparing MKVExtractGUI and FFmpeg, you can also consider the following products
Subler - Subler is a Mac OS X application that opens media containers, allows you to add or remove media...
HandBrake - HandBrake allows users to easily convert video files into a wide variety of different formats.
gMKVExtractGUI - GUI front-end for mkvinfo and mkvextract CLI tools.
Format Factory - Format Factory is software that allows the user to convert media into various file formats. The software is a product of PC Free Time, a Chinese software development company. Read more about Format Factory.
MP4Joiner - MP4Joiner is a multi-functional and cross platform application for joining the multiple MP4 music clips.
MKVToolnix - MKVToolnix is a set of tools to create, alter and inspect Matroska files under Linux, other Unices...