Generator for Notation Videos from Lilypond Text
The LilypondToBandVideoConverter is a system of several python scripts that orchestrate existing command line tools to convert a music piece written in the lilypond notation to
a PDF score of the whole piece,
several PDF voice extracts,
a MIDI file with all voices (with some preprocessing applied for humanization),
audio mix files with several subsets of voices (specified by configuration), and
video files for several output devices visualizing the score notation pages and having the mixes as mutually selectable audio tracks as backing tracks.
For processing a piece one must have
a lilypond fragment file with the score information containing specific lilypond identifiers, and
a configuration file giving details like the voices occuring in the piece, their associated midi instrument, target audio volume, list of mutable voices for the audio tracks etc.
Based on those files the python scripts -- together with some open-source command-line software like ffmpeg or fluidsynth -- produce all the target files either incrementally or altogether.
Installation and Requirements
All the scripts are written in python and can be installed as a python package. The package requires either Python 2.7 or Python 3.3 or later.
Additionally the following software has to be available:
lilypond: for generating the score pdf, voice extract pdfs, the raw midi file and the score images used in the video files,
ffmpeg: for video generation and video postprocessing,
sox: for instrument-specific postprocessing of audio files for the target mix files as well as the mixdown, and
Optionally the following software is also used:
qaac: the AAC-encoder for the final audio mix file compression.
mp4box: the MP4 container packaging software
The location of all those commands as well as a few other settings has to be defined in a global configuration file for the LilypondToBandVideoConverter.
Installation is done from the PyPi repository via
pip install lilypondToBVC
Make sure that the scripts directory of python is in the path for executables on your platform.
Download the file for your platform. If you're not sure which to choose, learn more about installing packages.
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