stands for the Matroska Video.
stands for MPEG 4.
window named open media will appear, with File selected.
on Convert/Save or Press Alt + O
settings, Make sure Convert is selected, on the profile, Select Video – H.264 +
go down to Destination File, Click on Browse and select where you want to save
the converted video file, type in the file name and Click on Save.
usually take almost the time of the video file.