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How to Merge MKV Files with mkvmerge GUI

text size: T | T Related software / service: MKVtoolnix , MKVMerge GUI

Problem

If you have lots of small mkv pieces, it is better to join these mkv files for convenient management and sharing. Other wise, maybe you want to add soft subs or another audio track to a mkv.

Solution

Here we will free a GUI included in MKVtoolnix to merge mkv files.Download MKVtoolnix, if you don't have it on your computer.
Extract the package and double click the mmg.exe file to launch mkvmerge GUI.
Click the add button to import the file you want to merge.You can see the tracks contained in each file.
Select a track and Set Options for input file：General track options and Format specific options.
In the General track options, rename the track and select the language for each track regardless of its type.

A flag: It tells the player that a specific track should be preferred upon playback if the user does not chose another one. Each track type has its own default track - e.g. the default audio track is the English one, and the default subtitle track is the French one.
Tags: For each track you can create a XML tags file. You can leave this option empty.
Timecode:import a timecode from a external text file. This is an advanced option, leave it empty too, if you are not very clear about it.

Format specific options:

Set the aspect ratio or Display width/height according to your need. If you specify the aspect ratio then mkvmerge will calculate the display dimensions based on the size of the video track. This option is only available for video tracks.
FPS: Number of frames per second for AVC/h.264 video tracks.If you don't select anything then mkvmerge defaults to 25.
Delay: This option is used to sync the audio or subtitle track.
FourCC:it is used in other containers(e.g. avi) to identify the codec used. MKV use Codec ID. You can leave this option empty.
Stereo mode: provides pseudo three dimensional images. Mostly we also leave this option empty.

In the Extra option, Cue contain links to the key frames in avi file. Usually we set it 'Default'.
After above settings, select the output filename and then click Start muxing button to merge mkv files.