One of these 'cleaner' programs must be deleting files from your transcoded folder. Or, it is deleting the 'MezzmoTranscode.db' database file in the following folder:
C:\Users\<username>\AppData\Local\Conceiva\Mezzmo (for Win8/Win7/Vista)
C:\Documents and Settings\<username>\Local Settings\Application Data\Conceiva\Mezzmo (for Win XP)
I suggest you add the transcoding folder and the above folder to the whitelist folders in the 'cleaner' programs' settings so they do not touch files in these folders.
Another possible reason for transcoded files to be removed from time-to-time is that the maximum size has been reached for the transcoded folder and Mezzmo is deleting older transcoded files so that newly transcoded files can be created. You can check the Transcoding Settings dialog to see if this maximum size has been reached and can also increase the maximum folder size if you like.
Bookmarks