For digital photographers, who make video clips on digital camera. Merge (Join) list of avi - files into one. Have preview first and last frames. Conversion from MotionJPEG (mjpg) to DivX, Xvid, Mpeg4 possible, also sound track PCM to MP3. Needed additional DivX or XviD codec. Program used Lame MP3 library from site lame.sourceforge.net (included to package). Read file data and uncompressed merging based on MS DirectShow technology.