MOFF file extension
Video Summary File
These files are created by Sony's PMB (Picture Motion Browser) application and are used to help index any generated video files.
These files appear with the .modd files and .m2ts video files.
The PMP software is bundled with various models of their Camcorders.
MODD file extension
Sony Video Information/Summary File
This file is used to store information on video taken with various Sony Camcorder models. This file is reported to accompany a .m2ts file
The mysterious .MODD file appears to contain information regarding dates and time-lines related to your recording. Attempts to delete these files in order to improve video archiving have resulted in loss of time-line data and some claim to have experienced a loss of audio data.