diff --git a/media-video/mkvtoolnix/additional-files/mkvtoolnix-gui.rdef.in b/media-video/mkvtoolnix/additional-files/mkvtoolnix-gui.rdef.in
new file mode 100644
index 000000000..ac58dc915
--- /dev/null
+++ b/media-video/mkvtoolnix/additional-files/mkvtoolnix-gui.rdef.in
@@ -0,0 +1,33 @@
+
+resource app_flags B_MULTIPLE_LAUNCH;
+
+resource app_version {
+	major  = @MAJOR@,
+	middle = @MIDDLE@,
+	minor  = @MINOR@,
+
+	variety = B_APPV_FINAL,
+	internal = 0,
+
+	short_info = "MKVToolNix GUI",
+	long_info = "@LONG_INFO@"
+};
+
+resource app_signature "@APP_SIGNATURE@";
+
+resource file_types message {
+	"types" = "video/x-matroska"
+};
+
+resource vector_icon {
+	$"6E636966040500020106033C9A71AE8AAC2EB1C93CC28149A1EC4957B500CCCC"
+	$"FBC7464CC8FF6B82F7020106033C3AEFAE2D6D2E71E03C810B49A1EE49587100"
+	$"F26878C7BA2839FFD36171010404955E0302044030C34530BC3A30304030BC3A"
+	$"30C3454050BC3A50C34550504050C34550BC3A00054731C371BB42C0D72A3724"
+	$"BE6CB42E2C263544323BBC7BC4AF4A5EC041CC79C60ECB2F5049C69FC732C61D"
+	$"C34504032E34353744343CBD2EC40F3F50070A010100000A0001001001178200"
+	$"040A000101123FFFB03527CDB527CD3FFFB0BAD084C1959601178212040A0001"
+	$"0112379F67BEEFA03FFD6D381653C2FFCD4B643801178212040A03010230211F"
+	$"01178200040A0201000A3DC0000000000000003DC00049500044400020FF0A00"
+	$"01001A3DC0000000000000003DC00049500044400020FF0117840004"
+};
diff --git a/media-video/mkvtoolnix/mkvtoolnix-74.0.0.recipe b/media-video/mkvtoolnix/mkvtoolnix-74.0.0.recipe
new file mode 100644
index 000000000..ddf991efe
--- /dev/null
+++ b/media-video/mkvtoolnix/mkvtoolnix-74.0.0.recipe
@@ -0,0 +1,141 @@
+SUMMARY="A Matroska file creator and editor"
+DESCRIPTION="MKVToolNix is a set of tools to create, alter and inspect \
+Matroska files. Matroska is a versatile media format which can contain \
+video, audio and subtitles, as well as chapter lists."
+HOMEPAGE="https://mkvtoolnix.download"
+COPYRIGHT="2003-2023 Moritz Bunkus"
+LICENSE="GNU GPL v2"
+REVISION="1"
+SOURCE_URI="https://mkvtoolnix.download/sources/mkvtoolnix-$portVersion.tar.xz"
+SOURCE_DIR="mkvtoolnix-$portVersion"
+CHECKSUM_SHA256="b7dc8be6cb9170030de06b983f256ff3cb21efa3209f0efe8e079656fa3d5643"
+PATCHES="mkvtoolnix-$portVersion.patchset"
+ADDITIONAL_FILES="mkvtoolnix-gui.rdef.in"
+
+ARCHITECTURES="all !x86_gcc2"
+SECONDARY_ARCHITECTURES="x86"
+
+PROVIDES="
+	mkvtoolnix$secondaryArchSuffix = $portVersion
+	app:MKVToolNixGUI$secondaryArchSuffix = $portVersion
+	cmd:mkvtoolnix_gui$secondaryArchSuffix = $portVersion
+	cmd:mkvmerge$secondaryArchSuffix = $portVersion
+	cmd:mkvextract$secondaryArchSuffix = $portVersion
+	cmd:mkvinfo$secondaryArchSuffix = $portVersion
+	cmd:mkvpropedit$secondaryArchSuffix = $portVersion
+	"
+REQUIRES="
+	haiku$secondaryArchSuffix
+	docbook_xsl_stylesheets
+	lib:libboost_filesystem$secondaryArchSuffix
+	lib:libboost_regex$secondaryArchSuffix
+	lib:libboost_system$secondaryArchSuffix
+	lib:libcmark$secondaryArchSuffix
+	lib:libdvdread$secondaryArchSuffix
+	lib:libebml$secondaryArchSuffix
+	lib:libflac$secondaryArchSuffix
+	lib:libfmt$secondaryArchSuffix
+	lib:libgl$secondaryArchSuffix
+	lib:libgmpxx$secondaryArchSuffix
+	lib:libiconv$secondaryArchSuffix
+	lib:libintl$secondaryArchSuffix
+	lib:libmatroska$secondaryArchSuffix
+	lib:libogg$secondaryArchSuffix
+	lib:libpugixml$secondaryArchSuffix
+	lib:libQt6Concurrent$secondaryArchSuffix
+	lib:libQt6Core$secondaryArchSuffix
+	lib:libQt6Dbus$secondaryArchSuffix
+	lib:libQt6Gui$secondaryArchSuffix
+	lib:libQt6Multimedia$secondaryArchSuffix
+	lib:libQt6Network$secondaryArchSuffix
+	lib:libQt6Svg$secondaryArchSuffix
+	lib:libQt6Widgets$secondaryArchSuffix
+	lib:libvorbis$secondaryArchSuffix
+	lib:libxslt$secondaryArchSuffix
+	lib:libz$secondaryArchSuffix
+	"
+
+BUILD_REQUIRES="
+	haiku${secondaryArchSuffix}_devel
+	docbook_xsl_stylesheets
+	devel:libboost_filesystem$secondaryArchSuffix
+	devel:libboost_regex$secondaryArchSuffix
+	devel:libboost_system$secondaryArchSuffix >= 1.69.0
+	devel:libcmark$secondaryArchSuffix
+	devel:libdvdread$secondaryArchSuffix
+	devel:libflac$secondaryArchSuffix
+	devel:libfmt$secondaryArchSuffix
+	devel:libgl$secondaryArchSuffix
+	devel:libgmpxx$secondaryArchSuffix
+	devel:libiconv$secondaryArchSuffix
+	devel:libintl$secondaryArchSuffix
+	devel:libogg$secondaryArchSuffix
+	devel:libpugixml$secondaryArchSuffix
+	devel:libQt6Concurrent$secondaryArchSuffix
+	devel:libQt6Core$secondaryArchSuffix
+	devel:libQt6Dbus$secondaryArchSuffix
+	devel:libQt6Gui$secondaryArchSuffix
+	devel:libQt6Multimedia$secondaryArchSuffix
+	devel:libQt6Network$secondaryArchSuffix
+	devel:libQt6Svg$secondaryArchSuffix
+	devel:libQt6Widgets$secondaryArchSuffix
+	devel:libvorbis$secondaryArchSuffix
+	devel:libxslt$secondaryArchSuffix
+	devel:libz$secondaryArchSuffix
+	devel:nlohmann_json
+	libebml${secondaryArchSuffix}_devel >= 1.4.4
+	libmatroska${secondaryArchSuffix}_devel >= 1.7.1
+	"
+BUILD_PREREQUIRES="
+	cmd:aclocal
+	cmd:autoreconf
+	cmd:gcc$secondaryArchSuffix
+	cmd:gettext$secondaryArchSuffix
+	cmd:pkg_config$secondaryArchSuffix
+	cmd:rake
+	"
+
+BUILD()
+{
+	export BUILDCXX=gcc
+	export BUILDCXX=g++
+
+	./autogen.sh
+
+	runConfigure ./configure \
+		--prefix=$appsDir/MKVToolNix \
+		--bindir=$appsDir/MKVToolNix \
+		--libdir=$appsDir/MKVToolNix/lib \
+		--datarootdir=$appsDir/MKVToolNix/data \
+		--datadir=$appsDir/MKVToolNix/data \
+		--enable-qt6 --disable-qt5 --disable-update-check \
+		--with-boost-libdir=$portPackageLinksDir/devel~libboost_system$secondaryArchSuffix/$relativeLibDir \
+		--with-qt6-prefix=$portPackageLinksDir/devel~libqt6core$secondaryArchSuffix \
+		--with-docbook-datadir=$portPackageLinksDir/docbook_xsl_stylesheets/data
+
+	rake -j $jobs
+}
+
+INSTALL()
+{
+	rake install
+
+	local APP_SIGNATURE="application/x-vnd.mkvtoolnix-gui"
+	local MAJOR="`echo "$portVersion" | cut -d. -f1`"
+	local MIDDLE="`echo "$portVersion" | cut -d. -f2`"
+	local MINOR="`echo "$portVersion" | cut -d. -f3`"
+	local LONG_INFO="$SUMMARY"
+	sed \
+		-e "s|@APP_SIGNATURE@|$APP_SIGNATURE|" \
+		-e "s|@MAJOR@|$MAJOR|" \
+		-e "s|@MIDDLE@|$MIDDLE|" \
+		-e "s|@MINOR@|$MINOR|" \
+		-e "s|@LONG_INFO@|$LONG_INFO|" \
+		$portDir/additional-files/mkvtoolnix-gui.rdef.in > mkvtoolnix-gui.rdef
+
+	rm -rf $appsDir/MKVToolNix/data/{applications,icons,metainfo}
+
+	addResourcesToBinaries mkvtoolnix-gui.rdef $appsDir/MKVToolNix/mkvtoolnix-gui
+
+	addAppDeskbarSymlink $appsDir/MKVToolNix/mkvtoolnix-gui "MKVToolNix GUI"
+}
diff --git a/media-video/mkvtoolnix/patches/mkvtoolnix-74.0.0.patchset b/media-video/mkvtoolnix/patches/mkvtoolnix-74.0.0.patchset
new file mode 100644
index 000000000..176328db2
--- /dev/null
+++ b/media-video/mkvtoolnix/patches/mkvtoolnix-74.0.0.patchset
@@ -0,0 +1,77 @@
+From 3537fb529e7d3821017b9431302815e44fca2ff4 Mon Sep 17 00:00:00 2001
+From: robxnano <89391914+robxnano@users.noreply.github.com>
+Date: Mon, 23 Jan 2023 15:58:40 +0000
+Subject: [PATCH] Patch ax_docbook.m4 to support Haiku
+
+---
+ ac/ax_docbook.m4 | 13 ++++++++-----
+ 1 file changed, 8 insertions(+), 5 deletions(-)
+
+diff --git a/ac/ax_docbook.m4 b/ac/ax_docbook.m4
+index 869d4b9..ff1c9e4 100644
+--- a/ac/ax_docbook.m4
++++ b/ac/ax_docbook.m4
+@@ -1,3 +1,7 @@
++AC_ARG_WITH(docbook_datadir,
++  AS_HELP_STRING([--with-docbook-datadir=dir],[datadir where DocBook XSL stylesheets are installed (default: /usr/share)]),
++  [ DOCBOOK_DATADIR="$with_docbook_datadir" ], [ DOCBOOK_DATADIR="${MINGW_PREFIX:-/usr}/share" ])
++
+ AC_ARG_WITH(docbook_xsl_root,
+   AS_HELP_STRING([--with-docbook-xsl-root=dir],[use dir as base for DocBook XSL stylesheets instead of looking for it; must contain the "manpages/docbook.xsl" sub-directory and file]),
+   [ DOCBOOK_ROOT="$with_docbook_xsl_root" ],)
+@@ -9,11 +13,10 @@ if ! test -z "$DOCBOOK_ROOT"; then
+ else
+   AC_MSG_CHECKING([for DocBook XSL root directory])
+ 
+-  PREFIX_FOR_XSL=${MINGW_PREFIX:-/usr}
+-  for i in `ls -d $PREFIX_FOR_XSL/share/xml/docbook/xsl-stylesheets*-nons 2> /dev/null` \
+-            $PREFIX_FOR_XSL/share/xml/docbook/stylesheet/xsl/nwalsh \
+-            $PREFIX_FOR_XSL/share/xml/docbook/stylesheet/nwalsh \
+-            `ls -d $PREFIX_FOR_XSL/share/sgml/docbook/xsl-stylesheets* $PREFIX_FOR_XSL/share/xml/docbook/xsl-stylesheets* 2> /dev/null` \
++  for i in `ls -d $DOCBOOK_DATADIR/xml/docbook/xsl-stylesheets*-nons 2> /dev/null` \
++            $DOCBOOK_DATADIR/xml/docbook/stylesheet/xsl/nwalsh \
++            $DOCBOOK_DATADIR/xml/docbook/stylesheet/nwalsh \
++            `ls -d $DOCBOOK_DATADIR/sgml/docbook/xsl-stylesheets* $DOCBOOK_DATADIR/xml/docbook/xsl-stylesheets* 2> /dev/null` \
+     ; do
+     if test -f "$i/manpages/docbook.xsl"; then
+       DOCBOOK_ROOT="$i"
+-- 
+2.37.3
+
+From a0e49d84b6469de100d547b67197c382271b009a Mon Sep 17 00:00:00 2001
+From: robxnano <89391914+robxnano@users.noreply.github.com>
+Date: Sat, 11 Feb 2023 18:30:17 +0000
+Subject: [PATCH] Patch qt6.m4 to allow specifying prefix
+
+---
+ ac/qt6.m4 | 8 ++++++++
+ 1 file changed, 8 insertions(+)
+
+diff --git a/ac/qt6.m4 b/ac/qt6.m4
+index d6ae0aa..dc0ed3b 100644
+--- a/ac/qt6.m4
++++ b/ac/qt6.m4
+@@ -9,6 +9,10 @@ check_qt6() {
+     AS_HELP_STRING([--with-qmake6=prog],[use prog instead of looking for qmake6]),
+     [ QMAKE6="$with_qmake6" ],)
+ 
++  AC_ARG_WITH(qt6-prefix,
++    AS_HELP_STRING([--with-qt6-prefix=prefix],[Qt 6 install path]),
++    [ QT6_PREFIX="$with_qt6_prefix" ],)
++
+   if ! test -z "$QMAKE6"; then
+     AC_MSG_CHECKING(for qmake6)
+     AC_MSG_RESULT(using supplied $QMAKE6)
+@@ -149,6 +153,10 @@ EOT
+   QT_CFLAGS="$QT_CFLAGS `$ac_cv_path_EGREP '^CXXFLAGS *=' "$qmake_dir/Makefile" | sed -e 's/^CXXFLAGS *= *//' -e 's/-pipe//g' -e 's/-O.//g' -e 's/ -f[[a-z]][[^ ]]*//g' -e 's/ -W[[^ ]]*//g' -e 's/-std=[[^ ]]*//g' -e 's/\$([[^)]]*)//g'`"
+   QT_INCFLAGS="`$ac_cv_path_EGREP '^INCPATH *=' "$qmake_dir/Makefile" | sed -e 's/^INCPATH *= *//'`"
+ 
++  # Fix relative path if prefix is provided, needed for Haiku
++  if ! test -z "${QT6_PREFIX}"; then
++    QT_INCFLAGS="`echo $QT_INCFLAGS | sed -e "s:\(\.\./\)\{1,\}:${QT6_PREFIX}/:g"`"
++  fi
+   # If under MinGW/MSYS2, fix relative include paths
+   if ! test -z "${MINGW_PREFIX}"; then
+     QT_INCFLAGS="`echo $QT_INCFLAGS | sed -e "s:../..${MINGW_PREFIX}:${MINGW_PREFIX}:g"`"
+-- 
+2.37.3