Beyond Linux® From Scratch (systemd Edition) - Version r12.4-1007

Chapter 42. Multimedia Libraries and Drivers

MLT-7.36.1

Introduction to MLT

The MLT package is the Media Lovin Toolkit. It is an open source multimedia framework, designed and developed for television broadcasting. It provides a toolkit for broadcasters, video editors, media players, transcoders, web streamers and many more types of applications.

[Note]

Note

Development versions of BLFS may not build or run some packages properly if LFS or dependencies have been updated since the most recent stable versions of the books.

Package Information

MLT Dependencies

Recommended

FFmpeg-8.0.1, frei0r-2.5.1, libsamplerate-0.2.2, and Qt-6.10.1

Optional

Doxygen-1.16.0, fftw-3.3.10, libexif-0.6.25, opencv-4.13.0, sdl2-compat-2.32.62, SWIG-4.4.1, eigen, JACK, LADSPA-SDK, libebur128, movit, rtaudio, rubberband, SoX, and vid.stab

Installation of MLT

Install MLT by running the following commands: 

mkdir build &&
cd    build &&

cmake -D CMAKE_INSTALL_PREFIX=/usr \
      -D CMAKE_BUILD_TYPE=Release  \
      -D MOD_SOX=OFF               \
      -D MOD_MOVIT=OFF             \
      -D MOD_VIDSTAB=OFF           \
      -D MOD_JACKRACK=OFF          \
      -D MOD_RUBBERBAND=OFF        \
      -W no-dev .. &&
make

This package does not come with a test suite. However a test .mp4 file can be played in a local graphical environment with ./out/bin/melt <filename>.mp4.

[Note]

Note

This application uses advanced graphical capabilities. In some cases, firmware for your specific graphics adaptor may be needed. See the section called “Firmware for Video Cards” for more information.

Now, as the root user: 

make install

Command Explanations

-D MOD_*=OFF: These switches allow the package to build without some of the optional external packages.

-D MOD_AVFORMAT=OFF: This option allows building without FFmpeg-8.0.1.

-D MOD_FREI0R=OFF: This option allows building without frei0r-2.5.1.

-D MOD_RESAMPLE=OFF: This option allows building without libsamplerate-0.2.2.

-D MOD_QT6=OFF: This option allows building without Qt-6.10.1.

-D MOD_OPENCV=ON: This option allows building some additional modules that use opencv-4.13.0.

Contents

Installed Program: melt-7 and melt (symlink to melt-7)
Installed Libraries: libmlt-7.so, libmlt++-7.so, and over twenty plugins
Installed Directories: /usr/include/mlt-7, /usr/lib/mlt-7, /usr/lib/cmake/Mlt7, and /usr/share/mlt-7

Short Descriptions

melt

is a test tool for MLT