diff --git a/media-libs/avidemux-core/Manifest b/media-libs/avidemux-core/Manifest
new file mode 100644
index 0000000..9fc0783
--- /dev/null
+++ b/media-libs/avidemux-core/Manifest
@@ -0,0 +1,2 @@
+DIST avidemux-2.7.6.tar.gz 21963753 BLAKE2B 6ca343f90c37844ebfd61123badccefb7327cbf500723c031257cf26500a5b6d98955568c2a9c0d182af68f162e878459a51e6049485937f9b01b4439b32e5e0 SHA512 bc60c733168d40d5b39cc7dd1f74b3f1315e9727302478ef1621e18748bad3400bcfd4d5199862c3093ad9df51385b6b2a96f0f8fedf9bf1c00060327545fb0f
+DIST avidemux-2.7.8.tar.gz 22080267 BLAKE2B a1e56856f44d56afac6ea4015f206a3f9301c025b3c8da1528165bd4c139ccc971074ac21aa05b9b3dfd6d514eabcbb375e671c8df9c9e5cae74a0a6597577c4 SHA512 6cd5527ab34517a07bf73e46d01f15b7ff023ff34ed70ee54f1d7dbfb6cf57364a323b4ecb89bb9aadeb9bc05473aacb40d8c4eecc522840a3c1c4b3a8756d82
diff --git a/media-libs/avidemux-core/avidemux-core-2.7.6.ebuild b/media-libs/avidemux-core/avidemux-core-2.7.6.ebuild
new file mode 100644
index 0000000..6f2b5d5
--- /dev/null
+++ b/media-libs/avidemux-core/avidemux-core-2.7.6.ebuild
@@ -0,0 +1,102 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_MAKEFILE_GENERATOR="emake"
+
+inherit cmake flag-o-matic toolchain-funcs
+
+DESCRIPTION="Core libraries for simple video cutting, filtering and encoding tasks"
+HOMEPAGE="http://fixounet.free.fr/avidemux"
+SRC_URI="https://github.com/mean00/avidemux2/archive/${PV}.tar.gz -> avidemux-${PV}.tar.gz"
+
+# Multiple licenses because of all the bundled stuff.
+LICENSE="GPL-1 GPL-2 MIT PSF-2 public-domain"
+SLOT="2.7"
+KEYWORDS="~amd64 ~x86"
+IUSE="debug nls nvenc sdl system-ffmpeg vaapi vdpau xv"
+
+# Trying to use virtual; ffmpeg misses aac,cpudetection USE flags now though, are they needed?
+DEPEND="dev-db/sqlite:3
+	nvenc? ( media-video/nvidia_video_sdk )
+	sdl? ( media-libs/libsdl:0 )
+	system-ffmpeg? ( >=media-video/ffmpeg-9:0[mp3,theora] )
+	vaapi? ( x11-libs/libva:0= )
+	vdpau? ( x11-libs/libvdpau:0 )
+	xv? ( x11-libs/libXv:0 )
+"
+RDEPEND="${DEPEND}
+	!<media-libs/avidemux-core-${PV}
+	!<media-video/avidemux-${PV}
+	nls? ( virtual/libintl:0 )
+"
+BDEPEND="virtual/pkgconfig
+	nls? ( sys-devel/gettext )
+	!system-ffmpeg? ( dev-lang/yasm[nls=] )
+"
+
+PATCHES=( "${FILESDIR}"/avidemux-core-2.7.6-ffmpeg-flags.patch )
+
+S="${WORKDIR}/avidemux2-${PV}"
+CMAKE_USE_DIR="${S}/${PN/-/_}"
+
+src_prepare() {
+	cmake_src_prepare
+
+	if use system-ffmpeg ; then
+		# Preparations to support the system ffmpeg. Currently fails because
+		# it depends on files the system ffmpeg doesn't install.
+		local error="Failed to remove bundled ffmpeg."
+
+		rm -r cmake/admFFmpeg* cmake/ffmpeg* avidemux_core/ffmpeg_package \
+			buildCore/ffmpeg || die "${error}"
+		sed -e 's/include(admFFmpegUtil)//g' -e '/registerFFmpeg/d' \
+			-i avidemux/commonCmakeApplication.cmake || die "${error}"
+		sed -e 's/include(admFFmpegBuild)//g' \
+			-i avidemux_core/CMakeLists.txt || die "${error}"
+	else
+		local ffmpeg_args=(
+			--cc=$(tc-getCC)
+			--cxx=$(tc-getCXX)
+			--ar=$(tc-getAR)
+			--nm=$(tc-getNM)
+			--ranlib=$(tc-getRANLIB)
+			"--optflags='${CFLAGS}'"
+		)
+
+		sed -i \
+			-e "s/@@GENTOO_FFMPEG_FLAGS@@/${ffmpeg_args[*]}/" \
+			cmake/ffmpeg_configure.sh.cmake \
+			|| die
+	fi
+}
+
+src_configure() {
+	# See bug 432322.
+	use x86 && replace-flags -O0 -O1
+	# Bug 768210
+	append-cxxflags -std=gnu++14
+
+	local mycmakeargs=(
+		-DAVIDEMUX_SOURCE_DIR='${S}'
+		-DGETTEXT="$(usex nls)"
+		-DNVENC="$(usex nvenc)"
+		-DSDL="$(usex sdl)"
+		-DLIBVA="$(usex vaapi)"
+		-DVDPAU="$(usex vdpau)"
+		-DXVIDEO="$(usex xv)"
+	)
+
+	use debug && mycmakeargs+=( -DVERBOSE=1 -DADM_DEBUG=1 )
+
+	cmake_src_configure
+}
+
+src_compile() {
+	cmake_src_compile
+}
+
+src_install() {
+	cmake_src_install
+}
diff --git a/media-libs/avidemux-core/files/avidemux-core-2.7.6-ffmpeg-flags.patch b/media-libs/avidemux-core/files/avidemux-core-2.7.6-ffmpeg-flags.patch
new file mode 100644
index 0000000..48e58be
--- /dev/null
+++ b/media-libs/avidemux-core/files/avidemux-core-2.7.6-ffmpeg-flags.patch
@@ -0,0 +1,8 @@
+--- a/cmake/ffmpeg_configure.sh.cmake
++++ b/cmake/ffmpeg_configure.sh.cmake
+@@ -1,2 +1,2 @@
+ export PATH=${FF_ENV_PATH}:$PATH
+-${FFMPEG_SOURCE_DIR}/configure ${FFMPEG_FLAGS}
+\ No newline at end of file
++${FFMPEG_SOURCE_DIR}/configure ${FFMPEG_FLAGS} @@GENTOO_FFMPEG_FLAGS@@
+\ No newline at end of file
diff --git a/media-libs/avidemux-core/metadata.xml b/media-libs/avidemux-core/metadata.xml
new file mode 100644
index 0000000..3e232c0
--- /dev/null
+++ b/media-libs/avidemux-core/metadata.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="project">
+    <email>media-video@gentoo.org</email>
+    <name>Gentoo Video project</name>
+  </maintainer>
+  <use>
+    <flag name="nvenc">Adds support for NVIDIA Encoder (NVENC) API for hardware accelerated encoding on NVIDIA cards.</flag>
+    <flag name="system-ffmpeg">Use the ffmpeg provided by the system.</flag>
+  </use>
+  <upstream>
+    <remote-id type="github">mean00/avidemux2</remote-id>
+  </upstream>
+</pkgmetadata>
diff --git a/media-libs/avidemux-plugins/Manifest b/media-libs/avidemux-plugins/Manifest
new file mode 100644
index 0000000..9fc0783
--- /dev/null
+++ b/media-libs/avidemux-plugins/Manifest
@@ -0,0 +1,2 @@
+DIST avidemux-2.7.6.tar.gz 21963753 BLAKE2B 6ca343f90c37844ebfd61123badccefb7327cbf500723c031257cf26500a5b6d98955568c2a9c0d182af68f162e878459a51e6049485937f9b01b4439b32e5e0 SHA512 bc60c733168d40d5b39cc7dd1f74b3f1315e9727302478ef1621e18748bad3400bcfd4d5199862c3093ad9df51385b6b2a96f0f8fedf9bf1c00060327545fb0f
+DIST avidemux-2.7.8.tar.gz 22080267 BLAKE2B a1e56856f44d56afac6ea4015f206a3f9301c025b3c8da1528165bd4c139ccc971074ac21aa05b9b3dfd6d514eabcbb375e671c8df9c9e5cae74a0a6597577c4 SHA512 6cd5527ab34517a07bf73e46d01f15b7ff023ff34ed70ee54f1d7dbfb6cf57364a323b4ecb89bb9aadeb9bc05473aacb40d8c4eecc522840a3c1c4b3a8756d82
diff --git a/media-libs/avidemux-plugins/avidemux-plugins-2.7.6.ebuild b/media-libs/avidemux-plugins/avidemux-plugins-2.7.6.ebuild
new file mode 100644
index 0000000..05c23cd
--- /dev/null
+++ b/media-libs/avidemux-plugins/avidemux-plugins-2.7.6.ebuild
@@ -0,0 +1,161 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_MAKEFILE_GENERATOR="emake"
+PYTHON_COMPAT=( python3_{7,8,9} )
+
+inherit cmake flag-o-matic python-single-r1
+
+DESCRIPTION="Plugins for the video editor media-video/avidemux"
+HOMEPAGE="http://fixounet.free.fr/avidemux"
+SRC_URI="https://github.com/mean00/avidemux2/archive/${PV}.tar.gz -> avidemux-${PV}.tar.gz"
+
+# Multiple licenses because of all the bundled stuff.
+LICENSE="GPL-1 GPL-2 MIT PSF-2 public-domain"
+SLOT="2.7"
+IUSE="a52 aac aften alsa amr dcaenc debug dts fdk fontconfig fribidi jack lame libsamplerate cpu_flags_x86_mmx nvenc opengl opus oss pulseaudio qt5 truetype twolame vdpau vorbis vpx x264 x265 xv xvid"
+KEYWORDS="~amd64 ~x86"
+
+REQUIRED_USE="${PYTHON_REQUIRED_USE}"
+
+COMMON_DEPEND="${PYTHON_DEPS}
+	~media-libs/avidemux-core-${PV}:${SLOT}[vdpau?]
+	~media-video/avidemux-${PV}:${SLOT}[opengl?,qt5?]
+	dev-lang/spidermonkey:0=
+	dev-libs/libxml2:2
+	media-libs/a52dec
+	media-libs/libass:0=
+	media-libs/libmad
+	media-libs/libmp4v2
+	media-libs/libpng:0=
+	virtual/libiconv
+	aac? (
+		media-libs/faac
+		media-libs/faad2
+	)
+	aften? ( media-libs/aften )
+	alsa? ( media-libs/alsa-lib )
+	amr? ( media-libs/opencore-amr )
+	dcaenc? ( media-sound/dcaenc )
+	dts? ( media-libs/libdca )
+	fdk? ( media-libs/fdk-aac:0= )
+	fontconfig? ( media-libs/fontconfig:1.0 )
+	fribidi? ( dev-libs/fribidi )
+	jack? (
+		virtual/jack
+		libsamplerate? ( media-libs/libsamplerate )
+	)
+	lame? ( media-sound/lame )
+	nvenc? ( amd64? ( media-video/nvidia_video_sdk ) )
+	opus? ( media-libs/opus )
+	pulseaudio? ( media-sound/pulseaudio )
+	qt5? (
+		dev-qt/qtcore:5
+		dev-qt/qtgui:5
+		dev-qt/qtwidgets:5
+	)
+	truetype? ( media-libs/freetype:2 )
+	twolame? ( media-sound/twolame )
+	vorbis? ( media-libs/libvorbis )
+	vpx? ( media-libs/libvpx:0= )
+	x264? ( media-libs/x264:0= )
+	x265? ( media-libs/x265:0= )
+	xv? (
+		x11-libs/libX11
+		x11-libs/libXext
+		x11-libs/libXv
+	)
+	xvid? ( media-libs/xvid )
+"
+DEPEND="${COMMON_DEPEND}
+	oss? ( virtual/os-headers )
+"
+RDEPEND="${COMMON_DEPEND}
+	!<media-libs/avidemux-plugins-${PV}
+"
+
+S="${WORKDIR}/avidemux2-${PV}"
+
+PATCHES=( "${FILESDIR}"/${PN}-2.6.20-optional-pulse.patch )
+
+src_prepare() {
+	default
+
+	# Don't reapply PATCHES during cmake_src_prepare
+	unset PATCHES
+
+	processes="buildPluginsCommon:avidemux_plugins
+		buildPluginsCLI:avidemux_plugins"
+	use qt5 && processes+=" buildPluginsQt4:avidemux_plugins"
+
+	for process in ${processes} ; do
+		CMAKE_USE_DIR="${S}"/${process#*:} cmake_src_prepare
+	done
+}
+
+src_configure() {
+	# See bug 432322.
+	use x86 && replace-flags -O0 -O1
+
+	for process in ${processes} ; do
+		local build="${WORKDIR}/${P}_build/${process%%:*}"
+
+		local mycmakeargs=(
+			-DAVIDEMUX_SOURCE_DIR='${S}'
+			-DPLUGIN_UI=$(echo ${build/buildPlugins/} | tr '[:lower:]' '[:upper:]')
+			-DFAAC="$(usex aac)"
+			-DFAAD="$(usex aac)"
+			-DALSA="$(usex alsa)"
+			-DAFTEN="$(usex aften)"
+			-DDCAENC="$(usex dcaenc)"
+			-DFDK_AAC="$(usex fdk)"
+			-DOPENCORE_AMRWB="$(usex amr)"
+			-DOPENCORE_AMRNB="$(usex amr)"
+			-DLIBDCA="$(usex dts)"
+			-DFONTCONFIG="$(usex fontconfig)"
+			-DJACK="$(usex jack)"
+			-DLAME="$(usex lame)"
+			-DNVENC="$(usex nvenc)"
+			-DOPENGL="$(usex opengl)"
+			-DOPUS="$(usex opus)"
+			-DOSS="$(usex oss)"
+			-DPULSEAUDIOSIMPLE="$(usex pulseaudio)"
+			-DQT4=OFF
+			-DFREETYPE2="$(usex truetype)"
+			-DTWOLAME="$(usex twolame)"
+			-DX264="$(usex x264)"
+			-DX265="$(usex x265)"
+			-DXVIDEO="$(usex xv)"
+			-DXVID="$(usex xvid)"
+			-DVDPAU="$(usex vdpau)"
+			-DVORBIS="$(usex vorbis)"
+			-DLIBVORBIS="$(usex vorbis)"
+			-DVPXDEC="$(usex vpx)"
+			-DUSE_EXTERNAL_LIBA52=yes
+			-DUSE_EXTERNAL_LIBASS=yes
+			-DUSE_EXTERNAL_LIBMAD=yes
+			-DUSE_EXTERNAL_LIBMP4V2=yes
+		)
+
+		use qt5 && mycmakeargs+=( -DENABLE_QT5=True )
+		use debug && mycmakeargs+=( -DVERBOSE=1 -DADM_DEBUG=1 )
+
+		CMAKE_USE_DIR="${S}"/${process#*:} BUILD_DIR="${build}" cmake_src_configure
+	done
+}
+
+src_compile() {
+	for process in ${processes} ; do
+		local build="${WORKDIR}/${P}_build/${process%%:*}"
+		BUILD_DIR="${build}" cmake_src_compile
+	done
+}
+
+src_install() {
+	for process in ${processes} ; do
+		local build="${WORKDIR}/${P}_build/${process%%:*}"
+		BUILD_DIR="${build}" cmake_src_install
+	done
+}
diff --git a/media-libs/avidemux-plugins/files/avidemux-plugins-2.6.20-optional-pulse.patch b/media-libs/avidemux-plugins/files/avidemux-plugins-2.6.20-optional-pulse.patch
new file mode 100644
index 0000000..a75f129
--- /dev/null
+++ b/media-libs/avidemux-plugins/files/avidemux-plugins-2.6.20-optional-pulse.patch
@@ -0,0 +1,20 @@
+--- a/cmake/admCheckAudioDeviceLibs.cmake
++++ b/cmake/admCheckAudioDeviceLibs.cmake
+@@ -158,6 +158,7 @@
+ 
+ 	MESSAGE(STATUS "Checking for PULSEAUDIOSIMPLE")
+ 	MESSAGE(STATUS "*****************************")
++	IF (PULSEAUDIOSIMPLE)
+         IF (PULSEAUDIOSIMPLE_INCLUDE_DIR AND PULSEAUDIOSIMPLE_LIBRARIES)
+         # in cache already
+          SET(PULSEAUDIOSIMPLE_FIND_QUIETLY TRUE)
+@@ -191,6 +192,9 @@
+         MARK_AS_ADVANCED(PULSEAUDIOSIMPLE_INCLUDE_DIR PULSEAUDIOSIMPLE_LIBRARIES)
+ 
+ 		APPEND_SUMMARY_LIST("Audio Device" "PulseAudio" "${USE_PULSE_SIMPLE}")
++	ELSE (PULSEAUDIOSIMPLE)
++		MESSAGE("${MSG_DISABLE_OPTION}")
++	ENDIF (PULSEAUDIOSIMPLE)
+ ELSE (UNIX AND NOT APPLE)
+ 	SET(PULSEAUDIOSIMPLE_CAPABLE FALSE)
+ ENDIF (UNIX AND NOT APPLE)
diff --git a/media-libs/avidemux-plugins/metadata.xml b/media-libs/avidemux-plugins/metadata.xml
new file mode 100644
index 0000000..8d0f32d
--- /dev/null
+++ b/media-libs/avidemux-plugins/metadata.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="project">
+    <email>media-video@gentoo.org</email>
+    <name>Gentoo Video project</name>
+  </maintainer>
+  <use>
+    <flag name="aften">Enable A/52 (AC-3) audio encoder support.</flag>
+    <flag name="amr">Enable Adaptive Multi-Rate format support via <pkg>media-libs/opencore-amr</pkg>.</flag>
+    <flag name="dcaenc">Enable DTS Coherent Acoustics audio encoder support via <pkg>media-sound/dcaenc</pkg>.</flag>
+    <flag name="fdk">Adds support for encoding AAC using <pkg>media-libs/fdk-aac</pkg>.</flag>
+    <flag name="fribidi">Enable unicode bidirectional algorithm support via <pkg>dev-libs/fribidi</pkg>.</flag>
+    <flag name="nvenc">Adds support for NVIDIA Encoder (NVENC) API for hardware accelerated encoding on NVIDIA cards.</flag>
+    <flag name="twolame">Enable TwoLAME support via <pkg>media-sound/twolame</pkg>, an optimised MPEG Audio Layer 2 (MP2) encoder.</flag>
+    <flag name="vpx">Enable WebM VP8 Codec SDK support via <pkg>media-libs/libvpx</pkg>.</flag>
+    <flag name="x265">Enables HEVC support with <pkg>media-libs/x265</pkg>.</flag>
+  </use>
+  <upstream>
+    <remote-id type="sourceforge">avidemux</remote-id>
+  </upstream>
+</pkgmetadata>
diff --git a/media-video/avidemux/Manifest b/media-video/avidemux/Manifest
new file mode 100644
index 0000000..4894536
--- /dev/null
+++ b/media-video/avidemux/Manifest
@@ -0,0 +1,4 @@
+DIST avidemux-2.7.6.tar.gz 21963753 BLAKE2B 6ca343f90c37844ebfd61123badccefb7327cbf500723c031257cf26500a5b6d98955568c2a9c0d182af68f162e878459a51e6049485937f9b01b4439b32e5e0 SHA512 bc60c733168d40d5b39cc7dd1f74b3f1315e9727302478ef1621e18748bad3400bcfd4d5199862c3093ad9df51385b6b2a96f0f8fedf9bf1c00060327545fb0f
+DIST avidemux-2.7.8.tar.gz 22080267 BLAKE2B a1e56856f44d56afac6ea4015f206a3f9301c025b3c8da1528165bd4c139ccc971074ac21aa05b9b3dfd6d514eabcbb375e671c8df9c9e5cae74a0a6597577c4 SHA512 6cd5527ab34517a07bf73e46d01f15b7ff023ff34ed70ee54f1d7dbfb6cf57364a323b4ecb89bb9aadeb9bc05473aacb40d8c4eecc522840a3c1c4b3a8756d82
+DIST avidemux-i18n-2.7.6.tar.gz 2268693 BLAKE2B dedf6d015e6bbd58f432e05e72c4d8d175ce4f5567331b5e51e7a14d2a8180e92211efc172a4d7001a2947f46c2e910a485d42970b99df05c1ba12002974cfbf SHA512 26ada29c4b7c23739ddcc4ca1dc9819bbc64fa2b6472fd7ff5706905dbd9b382e7a7d69ba78f72afa6f3db55cf3c5373a5e2d244f1cf189aeb187984dd1f4187
+DIST avidemux-i18n-2.7.8.tar.gz 2488165 BLAKE2B 9e6bfb10e938c880d372570cfe35ba9422a8c0081b116230d831bd421b205a555415350be96b0e3149beb164a0151e04205bded403354d7052aa24884a068407 SHA512 a62b06a3d95577cf805be36f991ccb63d044b7c3633ada65bd5810f0e7d8eb41aa874ef5dd63de4fcacc0be073935bed827b2f0bceba77ab735ac8673c1ad39f
diff --git a/media-video/avidemux/avidemux-2.7.6-r1.ebuild b/media-video/avidemux/avidemux-2.7.6-r1.ebuild
new file mode 100644
index 0000000..b1fce24
--- /dev/null
+++ b/media-video/avidemux/avidemux-2.7.6-r1.ebuild
@@ -0,0 +1,136 @@
+# Copyright 1999-2020 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=7
+
+CMAKE_MAKEFILE_GENERATOR="emake"
+inherit cmake desktop flag-o-matic qmake-utils xdg
+
+DESCRIPTION="Video editor designed for simple cutting, filtering and encoding tasks"
+HOMEPAGE="http://fixounet.free.fr/avidemux"
+SRC_URI="https://github.com/mean00/avidemux2/archive/${PV}.tar.gz -> ${P}.tar.gz
+	https://github.com/mean00/avidemux2_i18n/archive/${PV}.tar.gz -> ${PN}-i18n-${PV}.tar.gz"
+
+# Multiple licenses because of all the bundled stuff.
+LICENSE="GPL-1 GPL-2 MIT PSF-2 public-domain"
+SLOT="2.7"
+KEYWORDS="~amd64 ~x86"
+IUSE="debug nls nvenc opengl qt5 sdl vaapi vdpau xv"
+
+BDEPEND="dev-lang/yasm
+	qt5? ( dev-qt/linguist-tools:5 )"
+DEPEND="
+	~media-libs/avidemux-core-${PV}:${SLOT}[nls?,sdl?,vaapi?,vdpau?,xv?,nvenc?]
+	nvenc? ( amd64? ( media-video/nvidia_video_sdk:0 ) )
+	opengl? ( virtual/opengl:0 )
+	qt5? (
+		dev-qt/qtcore:5
+		dev-qt/qtgui:5
+		dev-qt/qtnetwork:5
+		dev-qt/qtopengl:5
+		dev-qt/qtwidgets:5
+	)
+	vaapi? ( x11-libs/libva:0= )
+"
+RDEPEND="${DEPEND}
+	nls? ( virtual/libintl:0 )
+	!<media-video/avidemux-${PV}
+"
+PDEPEND="~media-libs/avidemux-plugins-${PV}:${SLOT}[opengl?,qt5?]"
+
+S="${WORKDIR}/avidemux2-${PV}"
+
+src_unpack() {
+	default
+	mv -f -T avidemux2_i18n-${PV} "${S}"/avidemux/qt4/i18n >/dev/null || die
+}
+
+src_prepare() {
+	eapply "${FILESDIR}"/${PN}-2.7.4-qt-5.15.patch
+
+	processes="buildCli:avidemux/cli"
+	use qt5 && processes+=" buildQt4:avidemux/qt4"
+
+	for process in ${processes} ; do
+		CMAKE_USE_DIR="${S}"/${process#*:} cmake_src_prepare
+	done
+
+	if use qt5; then
+		# Fix icon name -> avidemux-2.7
+		sed -i -e "/^Icon/ s:${PN}\.png:${PN}-${SLOT}:" appImage/${PN}.desktop || \
+			die "Icon name fix failed."
+
+		# The desktop file is broken. It uses avidemux3_portable instead of avidemux3_qt5
+		sed -i -re '/^Exec/ s:(avidemux3_)portable:\1qt5:' appImage/${PN}.desktop || \
+			die "Desktop file fix failed."
+
+		# QA warnings: missing trailing ';' and 'Application' is deprecated.
+		sed -i -e 's/Application;AudioVideo/AudioVideo;/g' appImage/${PN}.desktop || \
+			die "Desktop file fix failed."
+
+		# Now rename the desktop file to not collide with 2.6.
+		mv appImage/${PN}.desktop ${PN}-${SLOT}.desktop || die "Collision rename failed."
+	fi
+
+	# Remove "Build Option" dialog because it doesn't reflect
+	# what the GUI can or has been built with. (Bug #463628)
+	sed -i -e '/Build Option/d' avidemux/common/ADM_commonUI/myOwnMenu.h || \
+		die "Couldn't remove \"Build Option\" dialog."
+}
+
+src_configure() {
+	# See bug 432322.
+	use x86 && replace-flags -O0 -O1
+
+	# The build relies on an avidemux-core header that uses 'nullptr'
+	# which is from >=C++11. Let's use the GCC-6 default C++ dialect.
+	append-cxxflags -std=c++14
+
+	local mycmakeargs=(
+		-DGETTEXT="$(usex nls)"
+		-DSDL="$(usex sdl)"
+		-DLibVA="$(usex vaapi)"
+		-DOPENGL="$(usex opengl)"
+		-DVDPAU="$(usex vdpau)"
+		-DXVIDEO="$(usex xv)"
+	)
+
+	use qt5 && mycmakeargs+=(
+			-DENABLE_QT5="$(usex qt5)"
+			-DLRELEASE_EXECUTABLE="$(qt5_get_bindir)/lrelease"
+	)
+
+	use debug && mycmakeargs+=( -DVERBOSE=1 -DADM_DEBUG=1 )
+
+	for process in ${processes} ; do
+		local build="${WORKDIR}/${P}_build/${process%%:*}"
+		CMAKE_USE_DIR="${S}"/${process#*:} BUILD_DIR="${build}" cmake_src_configure
+	done
+}
+
+src_compile() {
+	for process in ${processes} ; do
+		local build="${WORKDIR}/${P}_build/${process%%:*}"
+		BUILD_DIR="${build}" cmake_src_compile
+	done
+}
+
+src_test() {
+	for process in ${processes} ; do
+		local build="${WORKDIR}/${P}_build/${process%%:*}"
+		BUILD_DIR="${build}" cmake_src_test
+	done
+}
+
+src_install() {
+	for process in ${processes} ; do
+		local build="${WORKDIR}/${P}_build/${process%%:*}"
+		BUILD_DIR="${build}" cmake_src_install
+	done
+
+	if use qt5; then
+		cd "${S}" || die "Can't enter source folder"
+		newicon ${PN}_icon.png ${PN}-${SLOT}.png
+		domenu ${PN}-${SLOT}.desktop
+	fi
+}
diff --git a/media-video/avidemux/files/avidemux-2.7.4-qt-5.15.patch b/media-video/avidemux/files/avidemux-2.7.4-qt-5.15.patch
new file mode 100644
index 0000000..5c92a56
--- /dev/null
+++ b/media-video/avidemux/files/avidemux-2.7.4-qt-5.15.patch
@@ -0,0 +1,11 @@
+diff -ur avidemux2-2.7.4.orig/avidemux/qt4/ADM_UIs/src/T_RubberControl.cpp avidemux2-2.7.4/avidemux/qt4/ADM_UIs/src/T_RubberControl.cpp
+--- a/avidemux/qt4/ADM_UIs/src/T_RubberControl.cpp	2019-08-14 19:11:18.000000000 +0200
++++ b/avidemux/qt4/ADM_UIs/src/T_RubberControl.cpp	2020-05-30 20:45:53.304702855 +0200
+@@ -8,6 +8,7 @@
+ ***************************************************************************///
+ 
+ #include <QPainter>
++#include <QPainterPath>
+ #include <QRubberBand>
+ #include <QBoxLayout>
+ #include <QSizeGrip>
diff --git a/media-video/avidemux/metadata.xml b/media-video/avidemux/metadata.xml
new file mode 100644
index 0000000..10fd323
--- /dev/null
+++ b/media-video/avidemux/metadata.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE pkgmetadata SYSTEM "https://www.gentoo.org/dtd/metadata.dtd">
+<pkgmetadata>
+  <maintainer type="project">
+    <email>media-video@gentoo.org</email>
+    <name>Gentoo Video project</name>
+  </maintainer>
+  <use>
+    <flag name="nvenc">Adds support for NVIDIA Encoder (NVENC) API for hardware accelerated encoding on NVIDIA cards.</flag>
+  </use>
+  <upstream>
+    <remote-id type="sourceforge">avidemux</remote-id>
+  </upstream>
+</pkgmetadata>