.SEC File Extension
File Type 1PGP Secret Key Ring
What is a SEC file?
Contains ASCII armored private keys used for decrypting PGP (Pretty Good Privacy) encrypted files
File Type 2Samsung Security Video File
.SEC File Association 2
Video file created with a Samsung DVR surveillance system; contains H.264/AVC video in a proprietary container format that can only be played back with Samsung's video software.
You can play back a SEC file in Samsung's SmartViewer. You can also use FFmpeg to convert the file to a more convenient container format, like .AVI, that can be shared with others.
File Type 3GuinXell Video File
.SEC File Association 3
Video container file used by SecPlayer, a video player for the GuinXell homebrew platform, which can be run on the Sony PSP; contains sequential M-JPEG video data and .MP3 data for audio; used for playing back video on GuinXell at resolutions up to 240x160 and frame rates up to 18 frames per second.
SEC files can be transferred to a Sony PSP using Windows and a USB connection.