Video Joiner Express is the best software for join popular video files with exactly the same codec and codec parameters . It allows joining MP4, WMV, MKV, VOB, AVI, VOB, 3GP, RMVB, FLV, and QuickTime MOV video formats. It is very easy to use without any special setting. Add unlimited video files in the fast and easy setup interface. Join your video files and keep all video audio frames. Join your video file without re-encoding it, so fast beyond your imagination.