Designed especially for YouTube fans, Xilisoft YouTube HD Video Converter is certainly the most ideal downloading and converting tool which can help you to download YouTube High Definition videos and standard definition videos and convert them in-one-step with fast speed. It is capable of downloading and converting High Definition YouTube videos in resolution of 1080p or 720p to a vast range of video formats, including AVI, MPEG, H.264/MPEG-4 AVC, MPG and etc in remarkable quality to fit to a bundle of multimedia devices iPod, iPhone(iPhone 4 supported now), iPad, iPad, Apple TV, PSP, Zune, 3GP mobile phone, Xbox.