I'm wanting to reliably record the times at which a lecturer changes (advances or reverses) slides in a live Powerpoint presentation. This is to enable jpeg images of that presentation to be synced against a separate video camera recording of the lecture. Ideally I would like to capture into an external text file the time and slide number
Impactica have a "Time Recorder" add-in that does this, but it doesn't capture if the lecturer returns to an earlier slide. Also it writes the results into an external text-file that is overwritten if the process is started again - I'm looking for something more fool-proof!
Any suggestions of existing add-ins would be appreciated, or should I be dusting off Visual Studio?