I finally found a software package that lets me author BDMV discs of my AVCHD recordings without re-encoding the video. It's Total Media Extreme by Arcsoft. I burned 25 gigs of AVCHD recordings onto a re-writable BluRay disc last night. It took about an hour and a half to burn the disc as the rewritable discs only go up to 2x speed. With Nero Vision, authoring a BDMV with the same content took several hours as it insisted on re-encoding the video, and I ended up with noticeably lower quality due to the re-encoding. With Arcsoft, the video was untouched. I'm still on the 15-day trial with Total Media Extreme and definitely plan on purchasing a license. You can download the 15-day full-featured trial version at
http://www.arcsoft.com/support/downl...downloadid=411
To make sure Arcsoft doesn't re-encode your AVCHD clips when burning to BluRay, you need to set the video format to MPEG-4/AVC in the project settings. By default it gets set to MPEG2 which would require re-encoding.