How to prepare AVCHD on a PC for Mac use later? I recently began a job in IT and part of my role involves recording at some company events. However, it isn't my role to edit the videos themselves. These files need to be handed off to a Mac user who has Adobe Premier. I, however use a PC (Windows 7).

I am using a Panasonic HC-V520 which records AVCHD, and only have the typical included Windows 7 software. I need to somehow get the video to a Mac user (who has Adobe Premier) so that she may view and edit. It would also be nice, if possible, to store the files on our (Windows) server for archiving purposes.

I've found so far that I can play and store the .mts files on my PC and play them in VLC and Windows Media Player, but getting them from the PC to a Mac is really a pain-- Even if I wanted to edit them on my PC they don't burn to a playable DVD in Windows Media Center, and the files aren't playable on a Mac at all.
Don't do anything to the files, Premiere Pro should be able to handle them. Just copy them to a USB drive and hand them off to your editor. 

NEVER convert your video files prior to editing. You'll lose quality for no reason.

If the Mac won't open them, try another media player such as VLC media player. For a PC, I'd say you may need to install Quicktime as it comes with a codec that may be required, but on a Mac that should be preinstalled anyway. If that doesn't work, update your operating system. Or just try to import them to Premiere, if it doesn't work, update Premiere.