The reader was extended to convert MIDI to music notation.  https://hackaday.io/project/204595-midi-transcriber

Meanwhile, its biggest need has become an interface for exporting PNG images from a selection of pages.  The PNG images have to be loaded in a tablet while recording. 

./reader /reader/rach23.reader.gz -e rach 14 18

There was a command line hack which took an output prefix & a range of pages.  Then after loading any file in the GUI, it would export the page range to PNG images.

Of course, such an exporter is a hack for the current apartment.  There could be a way to always bring up the full reader display while recording, given enough space for a 4k monitor.  To look good on camera, even a monitor would probably be taken down.  The future might involve displaying PNG images on a phone because the tablet battery is not replaceable.  That would look better on camera than the tablet or monitor.

The ultimate setup might be a visualizer composited in the space occupied by the current screens but the screens would still have to go.

For now, there is an image exporter GUI, but it requires a keyboard.  It's only functional when compiled for a full PC.

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The trackpad system has been pretty awful.  Lions haven't bothered with many needed annotations because of it.  1366x768 is just too low for annotations.  It's a hassle to stop playing & drag out the trackpad.   The next hack might be to have it always go into zoom mode when drawing by default.