It is one of the best choices for modifying MKV files and it does not require installation (portable versions).
MKVToolNix just needs to be run to function (no installation process is required) and it can also be stored on external devices and run on any computer you have access to.
Another advantage is the intuitive and easy-to-use interface, inviting all users, regardless of their experience and familiarity with computers, to manage and alter their MKV files.
The tools provided by MKVToolNix allows you to perform the following actions: finding out information about MKV files; extracting tracks and other data from these files and creating Matroshka files from other media files (merging).
Moreover, MKV is not the only format supported by this application. MKVToolNix also works with AVI, FLV, MOV, MPEG, OGG, MP4 and FLAC.
Items can be brought to MKVToolNix by using the file browser or the drag and drop function. The actions you can perform are varied: changing aspect ratio and sizes, cropping, compression, and customizing track names, tags and timecodes. Save your logs in a TXT file for analyzing them again later and also have the command line displayed on demand.
MKVToolNix has undergone hundreds of changes and fixes for the latest versions, so you can enjoy a reliable and user-friendly application.
MKVToolNix needs a small amount of system resources and it doesn’t affect the performance of your computer.
MKVToolNix is a piece of software that will find its place on your computer memory and be used often if you work a lot with MKV files.
It allows you to perform all the operations you might think of when it comes to organizing and editing Matroska files.
Changes to MKVToolNix 76
mkvmerge: MP4 reader: mkvmerge will now read Timed Text (FourCC `tx3g`) subtitle tracks & convert them on the fly to Matroska's simple text subtitle format (`S_TEXT/UTF8`; text only, no styles). Implements #2208, #2242, #2613, #3000, #3243, #3418 and possibly others.— Full list of changes.