External files can be embedded in the movie as attachments. What's more, you can set the aspect ratio, FPS, delay, stereoscopy mode, cropping, cues, compression mode, and custom command-line parameters for enhanced functionality. For example, when it comes to general track options, you can set the track name, language, default and forced track flags, tags, and timecodes. The tool enables you to view, append and take apart tracks, chapters and tags, as well as to edit a wide range of data. The full package includes separate command-line utilities for merging and extracting streams, viewing information, as well as for editing headers and chapters They are all wrapped up in a graphical interface in the Windows edition.
It offers support for other popular video file types too, along with audio tracks and subtitles. MKVToolnix is an advanced application that enables you to open, examine, edit and mux Matroska files (.mkv).
