Yet the AVCHD Lite video turns out to be incompatible with QuickTime Player. Surely you may play it with Mplayer or VLC player. In order to play the AVCHD Lite video files generated by the Panasonic Lumix DMC-FT1 smoothly on Mac, the AVCHD Lite must be converted to QuickTime compatible format, like MOV, MP4, etc.
How do I transfer the AVCHD Lite to MOV for playing with QuickTime Player on Mac?
If you want to convert the AVCHD Lite to QuickTime for playing, then Pavtube AVCHD Lite MTS Converter for Mac is an option for you. You can transfer AVCHD Lite MTS files to MOV and any Quicktime format using this powerful video conversion tool.
You may refer to below guide how to transfer the AVCHD Lite MTS files to MOV with Pavtube MAC AVCHD Lite MTS Converter
Step One. Free download, install and launch the Mac AVCHD Lite MTS Converter.
Once you run it, click “Add” to load the source AVCHD Lite MTS files.

Step Two. Select QuickTime (*.mov ) or H.264 Video (*.mov) as output format for QuickTime
Click on the drop-down list of “Format”, and follow “Common Video”> “MOV-QuickTime (*.mov)”.

Step Three. Click “Settings” button to adjust video and audio parameters
Notice that which parameter to select has close relationship with the hardware configurations of your computer. For common MOV video files, you may use the video and audio parameters as the image below shows:

If you hang on the video quality and would not like degrade the original quality, you may retain the HD video quality by selecting “HD Video”> “H.264 HD Video (*.mov)” in Step 2 and then apply the following settings:
Video- Codec H.264, Size:1280*720p, Bitrate: 6000kbps, Frame Rate: 30/29.97,
Audio- Codec: AAC, Sampling rate: 48khz, Bitrate: 300kbps, Channels: 6.

Step 4: Click “Convert” button to start transfer AVCHD Lite to MOV format for editing.
After the above steps are done, you can click “Convert” button to start conversion. And you can click “Open” button to get the generated QuickTime MOV files effortlessly. Afterwards, just import the output files to QuickTime Player effortlessly. Have fun.