I am a (retired) teacher in a jazz studies course at a tertiary college in Geelong Australia.
My primary interest is to provide as much information as I can to intermediate - advanced jazz piano students.
I record the video (on a cheap webcam), audio (as an MP3 file on my computer) and as a midi file (on my Yamaha P-250 piano) all at the same time so all are in sync.
Usually straight after recording, I add the comments that try to explain some of the melodic/harmonic ideas that I used.
The music as standard notation can be seen if the midi file is opened in a suitable sequencing or notation program.
In the free player from Vanbasco
http://www.vanbasco.com/karaok eplayer/
the notes are displayed on a keyboard and if you slow the tempo down (hit the 'Control' button), you can see exactly which notes are played