https://eww.pass.panasonic.co.jp/pro-av/support/dload/avccam_impt/agree_e.htm

QuickTime Plug-in component

The AVCCAM Importer QuickTime plug-in component is to enable direct editing of AVCHD ".mts" file (*1) without conversion.
AVCHD clips recorded on a Panasonic AVCCAM lineup product can be handled directly in QuickTime Player and Final Cut Pro.

NOTE:
*1: AVCHD clips recorded on equipment other than AVCCAM products will not be handled properly. Use the Inspector function in QuickTime Player to view the clip property, which includes the equipment used to record.

* Momentary picture and audio disturbance may occasionally happen in the connection point of spanned files (a clip separated into separate 4GB files.)

* Additional rendering may be required when add title insert and edit more than two streams.

* At rare intervals, following symptom may occasionally happen: (A) MTS file's icon may not be displayed properly on Mac finder, (B) Clip duration may not be displayed on the QuickTime player and an Inspector window.

[Minimum System Requirements]

Mac
* Mac computers with Intel processor(s)
* 2GB of RAM or more
* Mac OS X 10.6 (Snow Leopard)
* QuickTime 7
* Final Cut Pro 7.0.3 or better however Not compatible with Final Cut Pro X (Ten)

Tested Mac computers
* MacPro 2x2.93GHz 6-Core Intel Xeon 16GB-RAM
* MacPro 2x 2.93GHz Quad Core Xeon 12GB-RAM
* MacBookPro 2.93GHz Core 2 Duo 4GB-RAM