I never heard back from you on whether you wanted contact info.

The issue was with the VBRI header, as you stated. I talked to one of the developers here and he said that we don't do anything with the VBRI stuff ourselves. The Fraunhofer encoder does it all itself. So, you'd be best contacting Fraunhofer regarding the VBRI specs. If you want, I can get you some contact info for somebody over there that should be able to help.