Re: Video generation, bash script, keeps sync in spite of tempo changes

[Knut Petersen]

Am 27.09.2016 um 23:43 schrieb Dr. Thomas Tensi:

There is also another python script written by me
and mentioned in a message in this group from
March 6th. Funnily it seems to be a mixture of
the approaches of Knut Petersen and ly2video.

the python file plus some demos can be downloaded at
    http://www.tensi.eu/thomas/iPod/notation-video.zip

Your script fails here because lilypond generates ".midi" files, not  ".mid" files on linux systems.
Line 983 could be changed to

        Processing._midiFileName           = _pictureFileStem + ".midi"

to cure that problem. A better idea would be to add

     #(ly:set-option 'midi-extension "mid")

to  notationVideo.ly as this will not break other systems.
 
After that minor modification the script succeeds to produce bach_639.mp4
with lilypond 2.18.2 on linux. Unfortunately some later changes in lilypond 2.19.x break
your program, it only builds temp1.mp4, not the mp4 files for the succeeding pages.



Regards,
 Knut