.Mov the quicktime format. You may need to use quicktime pro to convert it, as I don't think plain old quicktime has the same editing capabilities.

"I have a Sony HDR-SR5, or some other AVCHD camcorders such as Canon HF11, JVC GZ-HD10, Panasonic HDC-SD5, etc, but I failed to import the video files copied from my camcorder in the format of .mts or ...

AVCHD - Advanced Video Codec High Definition, is a format for the HD camcorder (Sony and Panasonic) and camera recording and playback. AVCHD video is MPEG-4 AVC/H.264 video compression, that allows ...