Avidemux is a universal media editor and converter geared towards experienced users. It not only includes support for a wide array of different video and audio formats, but can also transcode between those different formats for ultimate cross-platform compatibility.
Avidemux currently supports AVI, MPEG1-MPEG2, H623, MPEG4, QuickTime MOV, 3GP and many others. In terms of graphical user interface, it's easy-to-use and provides many different tools for cutting, copying and pasting media.
Version 2.7.1 is a freeware program which does not have restrictions and it's free so it doesn't cost anything.
Virus and Malware Tests: The program has been tested with several antivirus applications and has tested clean of viruses, malware or trojans.