Elgato's Turbo.264 HD is described as "an incredibly fast and easy-to-use tool that converts video files to a format that can be played on an iPod, iPhone, and Apple TV, used on a computer, and shared on the web".
Turbo.264 HD allows Mac users to convert any "popular" video format to a H.264 file in standard or HD resolutions.
Turbo.264 HD automatically detects AVCHD camcorders that are connected to the Mac and offers "preview" and "trim" functionality.
Turbo.264 HD supports AVCHD Video, QuickTime, AVI, DV, WMV, MPEG-1, MPEG-2 Program/Transport Stream, MPEG-4, MP4, M4V, H.263, H.264 AVC, Xvid, VIDEO_TS and "many more".
Turbo.264 HD is available to buy online now from www.elgato.com for £139.95, 149.95 euros or $149.95.