Xilisoft YouTube Video Converter is the most powerful YouTube Video converter with downloading + converting" one-step solution. It can one step download FLV videos from YouTube.com and convert to other popular videos formats; it can download and save the FLV videos on your local disk; and it can convert FLV files on local disk to other videos formats. It supports the output format: AVI, MPEG, MP4, WMV, 3GP, H.264/MPEG-4 AVC, H.264/PSP AVC, etc.