The file extension , technically known as MPEG-4 Part 14 , is a digital multimedia container format used to store video, audio, and metadata like subtitles.
: It typically uses H.264 or H.265 encoding. It saves space by only storing data for blocks of pixels that change from one frame to the next.
: If it's corrupted or incompatible, tools like HappyScribe can sometimes transcribe or convert the container format.
: Double-click to open with default players like Windows Media Player or QuickTime .