avc2avi (no install) AVI-Mux_GUI-1.17.8 (no install) MKVExtractGUI-1.6.4.1 (no install) mkvtoolnix (install required) VirtualDubMod (no install) I've been trying to find a way to convert MKV files to AVI without compomising on the output file size. However, ALL the converters I've tested failed to rise to the challenge. After a 2-3 hour wait (!) I invariably ended up having files over or very close to 2 Gb. Upon extensive googling I was able to find this and it really did fulfill all of my criteria: no overblown output files, relatively fast decoding time and ease of use. U will find all u need inside the RAR-file - all the necessary tools, an easy-to-follow instruction and a screenshot