Original sentence: On a computer, played either directly from recorded media or from the computer's internal hard disk drive (with requisite software such as media player with AVC decoder installed - see below).On a computer, played from the camcorder connected via USB as an external storage device (with requisite software such as media player with AVC decoder installed - see below).The default media players from Apple (QuickTime) or Microsoft (Windows Media Player) will not play AVCHD natively.Windows Media Player shipped with Windows 7 will support native AVCHD playback
Edited sentence: Files with extensions M2TS, MTS and M2T will be pre-registered in the system.On a computer, played from the camcorder connected via USB as an external storage device, or from removable media or from the computer's internal hard disk drive.Presently, the default media players from Apple (QuickTime) or Microsoft (Windows Media Player) will not play AVCHD natively.Windows Media Player will be able to index content of these files, while Windows Explorer will be able to create thumbnails for each clip.Windows 7 will support native AVCHD playback