Kdenlive/Development/KF5
Working with Kdenlive on KF5
If you want to test the KF5 (KDE Frameworks 5, based on Qt5) version of Kdenlive, you need a distribution that provides a running KF5 environnment, like Kubuntu Vivid (15.04) preview releases.
The status of the refactoring development process can be found on Refactoring page
Compiling MLT with Qt5 support
The first step is to recompile MLT with Qt5 support.
First install dependencies, on ubuntu:
sudo apt-get install build-essential pkg-config \ libavformat-dev libavdevice-dev frei0r-plugins-dev libgtk2.0-dev libexif-dev \ libmovit-dev libsdl1.2-dev libsox-dev libxml2-dev \ ladspa-sdk libcairo2-dev libswscale-dev qtscript5-dev libqt5svg5-dev \ libqt5opengl5-dev libepoxy-dev libeigen3-dev libfftw3-dev
On OpenSuse 13.2, for MLT+Kdenlive (not very used to that system, please correct me):
zypper ar -f http://download.opensuse.org/repositories/KDE:/Qt5/openSUSE_13.2 Qt5 zypper ar -f http://download.opensuse.org/distribution/13.2/repo/oss/ oss zypper ar -f http://download.opensuse.org/source/distribution/13.2/repo/oss/ oss-src zypper refresh zypper si kdenlive libmlt zypper install libqt5-qtscript-devel libqt5-qtsvg-devel \ libQt5OpenGL-devel libQt5Concurrent-devel kplotting-devel \ libQt5Test-devel kparts-devel knotifications-devel
Now obtain the source files for the melt project.
Get the latest release from https://github.com/mltframework/mlt/releases/latest. This shows the most recent release notes. Now scroll down to the end of the release note. You should see a minor section labelled "Downloads". This section contains two attachments; one for the zip sources, another for the tar.gz sources. Download one of them and unpack to some nice place in your file system. In this example the source was downloaded to ~/kdenlive/ creating a folder mlt-0.9.8
This page also has links to Melt releases http://www.mltframework.org/bin/view/MLT/ProjectNews
(<where and how to you download the melt source? Which version of the source? -ttguy>)
Decide where on the file system you want the compiled files to be installed. I choose /home/ttguy/development/kdenlive
Create shell variable for your choice by entering the following in the terminal
INSTALL_PREFIX=/your/path/of/choice
eg INSTALL_PREFIX=/home/ttguy/development/kdenlive
change directories to the melt source folder eg cd ~/kdenlive/mlt-0.9.8
Then configure, enabling all components, using target install dir specified by our INSTALL_PREFIX shell var, and pointing to Qt5...
On ubuntu 15.04 (multiarch enabled):
./configure --enable-gpl --enable-gpl3 --prefix=$INSTALL_PREFIX \ --qt-includedir=/usr/include/x86_64-linux-gnu/qt5 --qt-libdir=/usr/lib/x86_64-linux-gnu
While on ubuntu 14.10 or OpenSuse 13.2:
./configure --enable-gpl --enable-gpl3 --prefix=$INSTALL_PREFIX \ --qt-includedir=/usr/include/qt5 --qt-libdir=/usr/lib64
Success will look something like:
$ ./configure --enable-gpl --enable-gpl3 --prefix=$INSTALL_PREFIX \ --qt-includedir=/usr/include/x86_64-linux-gnu/qt5 --qt-libdir=/usr/lib/x86_64-linux-gnu Configuring framework: Configuring modules: Configuring modules/avformat: Configuring modules/core: Configuring modules/decklink: Configuring modules/feeds: Configuring modules/frei0r: Configuring modules/gtk2: - Libexif found, enabling auto rotate Configuring modules/jackrack: Configuring modules/kdenlive: Configuring modules/linsys: Configuring modules/lumas: Configuring modules/motion_est: Configuring modules/normalize: Configuring modules/oldfilm: Configuring modules/opengl: Configuring modules/plus: Configuring modules/plusgpl: Configuring modules/qt: - Libexif found, enabling auto rotate - Qt version 5.x detected - Include directory: /usr/include/x86_64-linux-gnu/qt5 - fftw found, enabling lightshow Configuring modules/resample: Configuring modules/rtaudio: Configuring modules/sdl: Configuring modules/sox: Configuring modules/swfdec: - swfdec not found: disabling Configuring modules/vid.stab: - vid.stab not found: disabling Configuring modules/videostab: Configuring modules/vmfx: Configuring modules/xine: Configuring modules/xml: Configuring mlt++: Configuring swig: GPLv3 license used
In the same melt source folder type:
make
success looks something like:
<snip> done make[1]: Leaving directory '/home/ttguy/kdenlive/mlt-0.9.8/src/swig' make[1]: Entering directory '/home/ttguy/kdenlive/mlt-0.9.8/profiles' make[1]: Nothing to be done for 'all'. make[1]: Leaving directory '/home/ttguy/kdenlive/mlt-0.9.8/profiles' $
In the same melt source folder type:
make install
success looks something like:
install -d "/home/ttguy/development/kdenlive2/bin" install -d "/home/ttguy/development/kdenlive2/include" <snip> install -d "/home/ttguy/development/kdenlive2/share/mlt/profiles" install -m 644 * "/home/ttguy/development/kdenlive2/share/mlt/profiles" rm -f "/home/ttguy/development/kdenlive2/share/mlt/profiles/"*~ rm -f "/home/ttguy/development/kdenlive2/share/mlt/profiles/Makefile" make[1]: Leaving directory '/home/ttguy/kdenlive/mlt-0.9.8/profiles' cp -R presets "/home/ttguy/development/kdenlive2/share/mlt"
Check that your compiled melt works:
cd $INSTALL_PREFIX/bin
melt myclip.mp4
Melt should play your test file in a video window.
You can check that your melt is linked to QT5 /KF5 libraries using the ldd command
ldd $INSTALL_PREFIX/lib/mlt/libmltqt.so
linux-vdso.so.1 => (0x00007ffcc0d4d000)
libmlt.so.6 => /usr/lib/libmlt.so.6 (0x00007f797c7f4000)
libpthread.so.0 => /lib/x86_64-linux-gnu/libpthread.so.0 (0x00007f797c5d6000)
libX11.so.6 => /usr/lib/x86_64-linux-gnu/libX11.so.6 (0x00007f797c29d000)
libQt5Core.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Core.so.5 (0x00007f797bd5a000)
libQt5Gui.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5 (0x00007f797b80d000)
libQt5Xml.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Xml.so.5 (0x00007f797ce05000)
libQt5Svg.so.5 => /usr/lib/x86_64-linux-gnu/libQt5Svg.so.5 (0x00007f797cdad000)
As Dan Dennedy recently pointed out, the frei0r package, which contains many effects, sometimes causes crashes because 2 of its filters are usually compiled against Qt4, which conflicts with Qt5. The solution is to balcklist these 2 filters, by adding them in MLT's blacklist.txt file, found in:
$INSTALL_PREFIX/share/mlt/frei0r/blacklist.txt
Just add these lines to the file:
frei0r.facebl0r frei0r.facedetect
Get the Qt5/KF5 branch of Kdenlive
We are cloning the git repository for kdenlive into a local folder on your hard drive. This step will create a new kdenlive folder in the current directory. In this example I cloned into ~/kdenlive/kdenlive_git. Which creates ~/kdenlive/kdenlive_git/kdenlive
cd ~kdenlive mkdir kdenlive_git cd kdenlive_git git clone git://anongit.kde.org/kdenlive.git
Success looks like:
Cloning into 'kdenlive'... remote: Counting objects: 67026, done. remote: Compressing objects: 100% (12978/12978), done. remote: Total 67026 (delta 54842), reused 65893 (delta 53935) Receiving objects: 100% (67026/67026), 22.35 MiB | 582.00 KiB/s, done. Resolving deltas: 100% (54842/54842), done. Checking connectivity... done.
The master branch is the current development branch containing refactoring efforts.
Create a build directory inside the kdenlive directory that git created:
cd kdenlive;mkdir build;cd build
(working dir now /kdenlive/kdenlive_git/kdenlive/build in our eg )
Compile Kdenlive
You will need to install several Qt/KDE devel packages to successfully compile.
On Ubuntu 15.04 the following packages will pull all the necessary dependencies:
sudo apt-get install libkf5newstuff-dev libkf5notifications-dev libkf5notifyconfig-dev libkf5plotting-dev \ extra-cmake-modules kdoctools-dev libsm-dev libv4l-dev libav-tools cmake qtdeclarative5-dev
Then build Kdenlive with the following options (in your build dir):
export LD_LIBRARY_PATH=$INSTALL_PREFIX/lib export XDG_DATA_DIRS=$INSTALL_PREFIX/share:$XDG_DATA_DIRS:/usr/share PKG_CONFIG_PATH=$INSTALL_PREFIX/lib/pkgconfig cmake .. -DCMAKE_INSTALL_PREFIX=$INSTALL_PREFIX make -j4 install
And test
$INSTALL_PREFIX/bin/kdenlive
Frameworks 5 packages are hard come by in current linux versions. Beta versions of Ubuntu/Kubuntu 15.04 are a safe bet for getting these packages. Consider installing a virtual Ubuntu/Kubuntu 15.04 for testing the frameworks branch.
A light virtualization option is using chroot, setting it up in a ubuntu/debian environment is as simple as:
sudo -s apt-get install schroot debottstrap debootstrap --arch amd64 vivid $CHROOTDIR http://us.archive.ubuntu.com/ubuntu/ cat << === >> /etc/schroot/chroot.d/vivid.conf [vivid] aliases=default description=vivid type=directory profile=desktop directory=$CHROOTDIR users=$USER === schroot -c -p vivid
Installing a recent git version of FFmpeg for Kdenlive (optional)
The LibAV/FFmpeg libraries that do all the encoding/decoding stuff are evolving quickly, but distributions do not always provide a recent version of these libraries. If you want to benefit from the latest features / fixes from these libraries, here is a quick howto on installing a recent FFmpeg version for MLT/Kdenlive without touching your system's LibAV/FFmpeg official version. This howto provides details for FFmpeg, but can probably be easily adapted for LibAV if you have a preference.
- Get the latest FFmpeg sources:
git clone git://source.ffmpeg.org/ffmpeg.git ffmpeg
- Compile FFmpeg with the "suffix" option. It means all FFmpeg programs/libraries will be renamed to use that suffix so that they do not mess up your system's official versions (in my exemple, the suffix is mlt, so ffplay will be called ffplaymlt). Choose the install prefix of your choice, but do not install in /usr. Here is a sample configure:
./configure --prefix=/usr/local --progs-suffix=mlt --build-suffix=mlt --enable-shared --enable-libmp3lame \ --enable-gpl --enable-libfaac --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid \ --enable-x11grab --enable-libgsm --enable-libx264 --enable-libtheora --enable-libdc1394 --enable-nonfree \ --disable-stripping --enable-avfilter --enable-libschroedinger --enable-libopencore-amrnb \ --enable-libopencore-amrwb --enable-version3 --enable-libvpx
- Next, recompile MLT to use this special FFmpeg version. Just add these 2 parameters to the MLT configure, where avformat-shared points to the install prefix of your custom FFmpeg, and avformat-suffix is the suffix used in previous step:
--avformat-shared=/usr/local --avformat-suffix=mlt
- Recompile Kdenlive and in the Kdenlive settings dialog, under environment, make sure to edit the FFmpeg and FFplay paths to your newly compiled versions (in my example it will be /usr/local/ffmpegmlt and /usr/local/ffplaymlt)