Support for Briz Video Joiner is available from the publisher site.
Short description: Briz Video Joiner is a powerful easy-to-use tool to join multiple video files (MPEG, AVI, WMV, RM) into one larger video file. MPEG and AVI files with identical parameters can be joined without recompression quickly and without quality loss....
To speed up your downloads we recommend you use a download manager such as 
Power MP3 Cutter Joiner is a powerful and ease-to-use audio editor. It builds audio cutter and audio joiner in one software. Supports MP3, WAV, WMA and OGG cutting/joining. Cut/join with high precision and no quality is lost!
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