WMV Joiner is a very easy-to-use tool for merging several video files to a large one. As the program does not compress the files, there is no quality loss of audio and video in the output file. WMV Joiner supports the following file formats: WMA, WMV, ASF, and has an extremely fast conversion speed. It also supports drag-and-drop handling. This software published by CHENGDU WEISHU TECHNOLOGY CO., LTD. is compatible with Win Vista/2003/XP.