A user may have attempted to convert a Matroska (.mkv) file to an MPEG-4 (.mp4) file but manually typed the new extension instead of letting a converter tool handle it.
A flexible container that can hold unlimited video, audio, and subtitle tracks in one file.
A widely used container standard for digital video and audio, often using H.264 or MPEG-2 encoding .
: A technology for high-speed fiber connectivity.
