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<html>
<head>
<title>A guide to mkvmerge GUI</title>
</head>
<body>
<h1>A guide to mkvmerge GUI (mmg)</h1>
<i>Moritz Bunkus</i>
<hr>
<h2>Table of contents</h2>
<p>
<ol>
<li>
<a href="mkvmerge-gui.html#introduction">Introduction</a>
<br>
<ul>
<li>
<a href="mkvmerge-gui.html#whatismatroska">What is Matroska?</a>
</li>
<li>
<a href="mkvmerge-gui.html#whatismkvmerge">What is mkvmerge?
What is mkvmerge GUI?
</a>
</li>
<li>
<a href="mkvmerge-gui.html#latestversion">Obtaining the latest
version
</a>
</li>
<li>
<a href="mkvmerge-gui.html#scope">Scope of this guide</a>
</li>
</ul>
</li>
<li>
<a href="mkvmerge-gui.html#setup">Setting up mkvmerge GUI</a>
</li>
<li>
<a href="mkvmerge-gui.html#muxing">Creating Matroska files</a>
<br>
<ul>
<li>
<a href="mkvmerge-gui.html#basics">Basics</a>
</li>
<li>
<a href="mkvmerge-gui.html#fileoptions">Options for input
files
</a>
</li>
<li>
<a href="mkvmerge-gui.html#trackoptions">Options for each
track
</a>
</li>
<li>
<a href="mkvmerge-gui.html#globaloptions">Global options</a>
</li>
<li>
<a href="mkvmerge-gui.html#doit">Starting the merge
process
</a>
</li>
<li>
<a href="mkvmerge-gui.html#saveload">Saving and loading
muxing settings
</a>
</li>
</ul>
</li>
<li>
<a href="mkvmerge-gui.html#chaptereditor">The chapter editor</a>
<br>
<ul>
<li>
<a href="mkvmerge-gui.html#chapterconcept">Matroska's
chapter concept
</a>
</li>
<li>
<a href="mkvmerge-gui.html#chapterexamples">Examples</a>
</li>
<li>
<a href="mkvmerge-gui.html#chapterformats">Chapter formats
supported by mkvmerge
</a>
<br>
<ul>
<li>
<a href="mkvmerge-gui.html#cfsimple">Simple/OGM style
chapter files
</a>
</li>
<li>
<a href="mkvmerge-gui.html#cfxml">Full-featured XML
style chapter files
</a>
</li>
<li>
<a href="mkvmerge-gui.html#cfkax">Chapters found in
Matroska files
</a>
</li>
</ul>
</li>
<li>
<a href="mkvmerge-gui.html#creatingchapters">Creating
chapter files
</a>
</li>
<li>
<a href="mkvmerge-gui.html#editingchapters">Editing existing
chapters
</a>
</li>
</ul>
</li>
</ol>
</p>
<hr>
<h2><a name="introduction">Introduction</a></h2>
<h3><a name="whatismatroska">What is Matroska?</a></h3>
<p>(<i>Note: simply copied from <a href="http://www.matroska.org/">
www.matroska.org</a>.</i>)</p>
<p><b>Matroska</b> aims to become THE Standard of Multimedia Container
Formats. It was derived from a project called MCF, but differentiates
from it significantly because it is based on EBML (Extensible Binary
Meta Language), a binary derivative of XML. EBML enables the Matroska
Development Team to gain significant advantages in terms of future
format extensibility, without breaking file support in old
parsers.</p>
<p>If you need any more info please head over to <a
href="http://www.matroska.org/">Matroska's homepage</a>.</p>
<h3>
<a name="whatismkvmerge">What is mkvmerge? What is mkvmerge
GUI?
</a>
</h3>
<p><i>mkvmerge</i> and <i>mkvmerge GUI</i> (or just <i>mmg</i>) are
two programs created by <a href="mailto:moritz@bunkus.org">Moritz
Bunkus</a>. They're part of the <i>mkvtoolnix</i>
package. <i>mkvmerge</i> can read a lot of different multimedia files
and put their contents into Matroska files. Unfortunately this is a
command line program, and not everyone is comfortable working on the
command line. This is where <i>mkvmerge GUI</i> comes into play. It is
a GUI that provides the user with an intuitive but powerful interface
to <i>mkvmerge</i>.</p>
<p>Both programs are available for both Windows and GNU/Linux and
other Unix derivatives. The program is licensed under the GPL, so the
source code is available to anyone interested.</p>
<h3><a name="latestversion">Obtaining the latest version</a></h3>
<p>You can always find the latest version of <i>mkvtoolnix</i> on
<a href="http://www.bunkus.org/videotools/mkvtoolnix/">Moritz Bunkus'
website</a>. Windows users will have to download the runtime DLLs as
well as the <i>mkvtoolnix</i> binaries. Linux/Unix users will probably
download the sources and compile <i>mkvtoolnix</i> themselves.</p>
<h3><a name="scope">Scope of this guide</a></h3>
<p>This guide only focusses on the GUI part of these tools. All
command line options are explained in detail in <i>mkvmerge</i>'s man
page/HTML page.</p>
<hr>
<h2><a name="setup">Setting up mkvmerge GUI</a></h2>
<p>(<i>Note: This section does not cover compilation and
installation. mkvmerge's own documentation and the
<code>README</code> files that are included in the <i>mkvtoolnix</i>
package.</i>)</p>
<p>The only thing that <i>mmg</i> needs to know is the location of the
<i>mkvmerge</i> binary. Under normal circumstances it will be found
automatically. But if not then you can select the binary to use on the
<i>Settings</i> tab.</p>
<hr>
<h2><a name="muxing">Creating Matroska files</a></h2>
<h3><a name="basics">Basics</a></h3>
<p><i>mkvmerge</i> strictly differentiates between <i>files</i> and
<i>tracks</i>. An input <i>file</i> usually contains one or more
<i>tracks</i>. <i>mkvmerge</i> needs at least one input file and the
file name of the Matroska file it should create before it can do any
work. Starting with this minimal set of options the user can add more
input files, select advanced options for each track, apply some more
global options etc.</p>
<p>The typical basic steps are:<br>
<ol>
<li>Select some input <i>files</i>,</li>
<li>set language options for the <i>tracks</i>,</li>
<li>set the movie/file title,</li>
<li>select the file to write to and</li>
<li>start the muxing process.</li>
</ol>
</p>
<p>When <i>mmg</i> starts up it shows the first and probably most
important tab: the <i>input tab</i>. Here you see four different
elements. The topmost input box lists all input <i>files</i>. Directly
under this box are options that apply to the currently selected input
<i>file</i>.</p>
<p>The two buttons to the right of the upper list box can be used to
add files to the list box with the <i>+</i> button and to remove the
selected entry with the <i>-</i> button.</p>
<p>Once the user selects an input <i>file</i> in the upper list box
the second list box will contains all <i>tracks</i> that can be read
from this <i>file</i>. For each of these tracks the user can select
track specific options with the input boxes and check boxes below the
track listing. These options will be described in the following
sections.</p>
<h3><a name="fileoptions">Options for input file</a></h3>
<p>Once the user has added and selected an input file he can set
options that apply to this specific file. At the moment only one such
option has been implemented: <code>No chapters</code>. If this option
is checked then <i>mkvmerge</i> will not try to copy chapters from
this source file. More information about chapters can be found in the
section about the <a href="mkvmerge-gui.html#chaptereditor">chapter
editor</a> in this document and in <i>mkvmerge</i>'s own
documentation.</p>
<h3><a name="trackoptions">Options for each track</a></h3>
<p>Depending on the type of the currently selected track (audio,
video, subtitles) and even depending on the contents of the track only
a subset of all the track specific options are availbale. The options
are:
<br>
<ul>
<li><code>Language:</code> The user can select the language for each
track regardless of its type. This language is coded in the ISO639-2
language code. The drop-down box contains all ISO639-2 codes so the
user does not have to worry about selecting the wrong language
code.</li>
<li><code>Track name:</code> The user can set a name for the current
track. This name is a free-form string. Practical examples could be
'director's comments' or 'aeriel view of Seattle'. Note that these
names are not meant to contain the movie title!</li>
<li><code>Cues:</code> The <i>cues</i> are for Matroska what the
index is for AVI files. They contain links to the key
frames. Usually this option should be left on the value
'default'. <i>mkvmerge</i> will automatically chose the best method
for any given track type. A full explanantion of tracks can be found
in <i>mkvmerge</i>'s documentation.</li>
<li><code>Aspect ratio:</code> With this option the user can set the
aspect ratio that should be used upon playback. It defaults to the
aspect ratio that the movie was encoded with but can be changed,
e.g. for anamorphic encodings. The GUI expects the format to be
either a floating point number (e.g. '2.33') or a fraction
(e.g. '16/9').
<br>
This option is only available for video tracks.</li>
<li><code>FourCC:</code> Matroska does not normally store the FourCC
which is used in other containers to identify the codec
used. Matroska has its own format, called <i>CodecID</i>, but it
also has an AVI compatibility mode. In thise mode the FourCC is also
stored. With this option the FourCC can be forced to a different
value. However, you cannot change the <i>CodecID</i> used by
<i>mkvmerge</i>.
<br>
This option is only available for video tracks.</li>
<li><code>Delay (in ms):</code> In some cases audio and video are
not synchronized properly. With this option the user can offset the
audio track by a given amount, either positive or
negative. <i>mkvmerge</i> will either remove samples at the
beginning or insert silence at the beginning to adjust the track.
<br>
This option is available for audio and text subtitle tracks.</li>
<li><code>Stretch by:</code> In some cases audio and video slowly
drift apart during playback. This can be fixed by supplying a factor
of how much the timecodes should be stretched by <i>mkvmerge</i>. If
nothing is given then '1.0' is assumed which does not alter the
timecodes. Please note that this option has not been implemented for
all audio track types yet.
<br>
This option is available for audio and text subtitle tracks.</li>
<li><code>Subtitle charset:</code> Some text subtitle formats do not
store the charset that they were creted with. This is important
because text subtitles are auomatically converted to the UTF-8
charset during muxing. <i>mkvmerge</i> will normally assume that the
system's current charset is the same that the subtitle file was
written in. But in case this is not true the user can select the
correct charset.
<br>
This option is only available for text subtitle tracks.</li>
<li><code>Make default track:</code> Matroska knows a flag which
tells the player that a specific track should be preferred upon
playback if the user does not chose another one. Of course each
track <i>type</i> has its own default track - e.g. the default audio
track is the English one, and the default subtitle track is the
French one. If no track is set to be the default track then
<i>mkvmerge</i> will promote the first track of each type that it
finds to be the default track. This is consistent with the behaviour
of various media players.</li>
<li><code>AAC is SBR/HE-AAC/AAC+:</code> The new technology called
'high efficiency AAC' has some drawbacks when it is being stored in
<code>.AAC</code> files: it is not possible to detect the HE-AAC
part for these files. Therefore the user has to check this option
manually if it applies. Please note that this problem does not exist
for HE-AAC stored in <code>.MP4</code> files.</li>
</ul>
</p>
<h3><a name="globaloptions">Global options</a></h3>
<h3><a name="doit">Starting the merge process</a></h3>
<h3><a name="saveload">Saving and loading muxing settings</a></h3>
<hr>
<h2><a name="chaptereditor">The chpater editor</a></h2>
<h3><a name="chapterconcept">Matroska's chapter concept</a></h3>
<h3><a name="chapterexamples">Examples</a></h3>
<h3>
<a name="chapterformats">Chapter formats supported by
mkvmerge
</a>
</h3>
<h4><a name="cfsimple">Simple/OGM style chapter files</a></h4>
<h4><a name="cfxml">Full-featured XML style chapter files</a></h4>
<h4><a name="cfkax">Chapters found in Matroska files</a></h4>
<h3><a name="creatingchapters">Creating chapter files</a></h3>
<h3><a name="editingchapters">Editing existing chapters</a></h3>
</body>
</html>