The GUI lets you adjust the size of the sections by dragging the sides to contract and expand them. All of the pieces can be separately selected and unselected depending on your preferred action to keep or remove elements. The different components of the records will appear in the ‘Tracks, chapters and tags’ area to tell you the multimedia type, codec, language, etc. You can drop multiple files at once or only a single file to see the file name, container type, size, etc. The information will populate into the different areas of the UI: ‘Source file’ and ‘Tracks, chapters and tags’. You can import media by dragging and dropping the documents into the ‘Input’ section of the user interface. MKVToolNix completes the tasks quickly while displaying the progress percentage in the lower right corner. The app can embed multiple subtitles into the media in different languages: Arabic, English, Spanish, etc. You can extract the different elements from the files: audio, subtitles, and video. The software lets you split a single record up into numerous files to easily access the preferred part. There are plenty of options to edit while you inspect the properties. New files can be created from the processes of splitting the content. You can extract and merge codecs within the GUI. MKVToolNix is a multiplexer that can demux and mux data.

You can use MKVToolNix to manipulate MKV files by using the mkvextract, mkvinfo, mkvmerge, mkvpropedit, and mmg tools. MKVToolNix lets you control the different factors that are within the MKV container format: header, subtitles, visuals, etc. MKV formats are a popular file type because they can package audio, video, and text content together.

What is an MKV file?Īn MKV file is a digital container for multimedia files that can be called a Matroska file.

MKVToolNix GUI is cross platform and available for Apple Mac, Linux, Microsoft Windows PC, and other Unix 32-bit and 64-bit operating systems. The freeware is an open source project developed by Moritz Bunkus that lets you modify the application in the C++ programming language. MKVToolNix is a free MKV manager that lets you create, edit, and view MKV files in a graphical user interface.

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