Use FREE & FREEWARE software

AVI Trimmer: Free video editor

SolveigMM AVI Trimmer is a free video editor for fast and lossless AVI editing. This freeware AVI editor is small, smart, easy to use and  involves no encoding/decoding processes. No video / audio degradation and out of sync problem arises after editing. All AVI file types of any size and video / audio content are supported.

With AVI Trimmer you can do the folowing things: 
For advanced editing more media formats - MPEG-2, WMV, ASF, WMA and MP3 use

Downlaod Link: http://www.solveigmm.com/?Downloads