Web based compression services:

Mux by Nathan Freitas

PC only:

http://en.wikipedia.org/wiki/SUPER_%28software%29  (free and open source)

http://www.elecard.com/products/products-pc/consumer/converter-studio-av\chd/

            "I use it with my Sanyo Xacti HD1000 and it works very well. You may

             encode your AVCHD files in either AVI or MPEG2-HD."

Cross platform:

• http://en.wikipedia.org/wiki/Avidemux (free and open source)
• http://www.techspansion.com/visualhub/ (paid software)
• MPEG streamclip (***the Vlogger Favorite***): great for putting sound back into vieo clips created on Sony cameras.