#Sync questions
Ok here's my 2 cents worth.
You would need a sync generator (I think they are also refered to as Black
Burst Generators). That signal would also be refered to as HOUSE SYNC. You
would feed that sync into the TBCs reference in connector. You most likely
would have to get a video distribution amp which would take the one sync
source in and give you at least 4 outputs that you would send to each TBC
and what ever else needed a reference in. That way there would be no
timing differences as you switch between devices as you record. I also
think you have to keep the coaxial cable lengths the same from the
distribution amp to each device or you may get delays in timing.
Chroma keyers are available from any video product distributer such as B&H
or G&G.
I have no info on the I2C connection.
I hope my info is correct, good luck.
Jim R. Ollick on a Warped 4000/040/40
Using AP from Bergenfield, NJ