AVI Joiner is an easy-to-use tool for joining several AVI files into bigger one. Because the program does not recompress the AVI files, the audio and video of the output AVI file has no quality loss. The conversion speed is extremely fast. AVI joiner also supports the drag and drop of files. Only AVI files which have same frame rate, frame size, video codec and audio parameters can be joined. The program does not support DML AVI files.