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Aiseesoft YouTube Converter Mate is not only a video converter but also an online YouTube video downloader. It can help you download online videos from YouTube, Metacafe, Google Video, Yahoo Video, MySpace, iFilm, and many other online video websites.
This YouTube Converter Mate can also convert between all popular video formats, including FLV, MP4, H.264, AVI, MP3, WMV, WMA, FLV, MKV, 3GP, VOB, MOV, M4A, AAC, WAV, etc. It also allows you to edit your video; you can trim one part of your video, crop video playing area, merge two or more files into one output file, and so on.