On Sun, 2016-03-06 at 19:24 +0100, Dr. Thomas Tensi wrote: > Dear all, > > > for my practising and stage usage I developped a tiny > toolchain based on lilypond. > > Starting from a lilypond file an MP4 video is produced > playing the music (or part of) and showing the score (or > part of) with page turning synchronous to the music. As an > additional aid, a (soft) subtitle shows the current measure > number for orientation. > > I use this on a tablet on stage for a duo to have the > background tracks for that band synchronous with the score > for the live instruments. Of course, only one tablet can be > used like that, because there is no video synchronisation > among several tablets out of the box. > > The whole process is described in > > http://www.tensi.eu/thomas/iPod/notation-video.html > > the appetizer demo video with a BWV 639 rendition can be > found at > > https://youtu.be/bqiMfUvmpug > > The idea originated in 2006, where I made a tool chain based > on avisynth and on Windows. Now the 2016 tool chain just > uses lilypond, timidity plus soundfont, ffmpeg and python > (for scripting); those tools should be available on almost > any platform. > > A weakness of the approach is that the page turning times > for the score are gained by parsing the Postscript output > file of lilypond. This approach is fragile and might break > when the font set is changed or whenever lilypond changes > its rendering philosophy. > > Another disadvantage is that tempo changes must be supplied > in a separate text file, because they cannot easily be > deduced from rendering data.
Mathieu Demange found a way of extracting tempo changes see his work at https://gitlab.com/sigmate/lilypond-html-live-score and a video showing LilyPond score visualisation based on his work in Denemo https://vimeo.com/154414223 this is based on LilyPond 2.18, his latest work uses new features in the 2.19 series and a corresponding version of Denemo using that route can be found in a branch http://git.savannah.gnu.org/gitweb/?p=denemo.git;a=shortlog;h=refs/heads/PlaybackView HTH Richard _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user
