Hi!
Unfortunately, we did not manage to solve it before the opening, but the problem can be reduced by increasing I/O Vector size (which again means more latency).
I have done som experiments using jweb as video player, and it seems promising. I made a HTML- file with video- tag that I control from max by javascript- messages. I was able to control all aspects of the player that I needed, including starting, stopping, seeking and detecting the end of each movie.
Unfortunately, you will not be able to get the audio streams from the video to MSP as this will be controlled på jwwb (which in turn is an embedded Chromium browser). Also, jweb can only read OGG Vorbis video- files, so we will maybe need to reencode all videofiles used in the exhibition.
Hopefully we will test a prototype of this solution this week.
I you like, I can share the prototype. I am not at the computer with the prototype at the moment, but can upload it the this forum tomorrow.