.M1V File Extension

An M1V file is a video file saved in a format based on the Moving Picture Experts Group Phase 1 (MPEG-1) format. It stores video, audio, and metadata interleaved together and compressed with lossy compression. M1V files are typically used for saving home videos, TV shows, and movies.

M1V files are one of several multimedia file types based on MPEG-1, including .MPG, .MPEG, .M1A, .MP1, .MPA, and .MPV. The video files can be opened with a variety of video players, such as VideoLAN VLC media player, Apple QuickTime Player, and Adobe Flash.