Since your Panasonic HMC150 digital camera prompt “Check Card” error message, I judge your Transcend 32GB card may be damaged. Typically, this is a logical corruption (non- physical damage). Generally, lost files can be recovered from logic damaged card. You can search “Panasonic photo recovery” or “Panasonic video recovery” on Google to find the right data recovery software. AVCHD Video File (MTS) is a common digital camera video format; most multimedia file recovery tools support recovery of this video format.
Need to be reminded:
(1) Once the file is missing, you should stop taking new photos or videos immediately. Otherwise, new pictures or videos may overwrite the lost files. Overwritten files are unrecoverable.
(2) Before installing and using the Panasonic picture recovery software, carefully read the user manual of the recovery tool.
(3) Do not buy any data recovery tool, unless it has found the lost files.
Good luck to you!