Mac users of AVCHD camcorders can now losslessly edit their video without transcoding it to a more standard format–Neo Scene, a windows app designed for this purpose, is now out for Mac. [Cineform]
(Sorry about this post’s original headline, which suggested this was the *only* thing on Mac that could edit AVCHD. Many apologies, readers.)



Did you actually look at the page?
“With Neo Scene you will convert your difficult-to-edit HDV or AVCHD camera footage to CineForm AVI files and then benefit from the same theatrical quality format and real-time editing performance as professionals.”
i.e. it does transcode, it just does so losslessly.
Or, you know, just use iMovie. Or Final Cut Express. Or Final Cut Pro. Lots of AVCHD support listed on this page: http://support.apple.com/kb/HT3290#2
Umm. 100% wrong really. As big a fan as I am of Cineform’s products (it’s an excellent RED intermediate codec) this is transcoding software. It does NOT allow for native AVCHD editing. Given the extremely long-GOP nature of AVCHD that would be very difficult (you couldn’t even achieve frame accurate cuts without processing).
FCP’s ‘log and transfer’ function allows you to do the same thing – transcode to Pro Res for editing. For $129 you can transcode to Cineform’s own (excellent) codec, and get a cool progressive look from your crappy compressed HD footage if you like. Yay!
A correction, please Rob?