Just to follow up on my inital question, I was able to record audio and video from Access Grid using Max. Because AG provides separate audio and video streams, I had to capture both independently. Audio was captured directly from the AG, and I created an .SDP file with the information from the venue server to stream the video into Max using jit.grab. I then recorded the asynchronous audio and video using jit.vcr. There is a bit of lag in the video stream when recording in this manner, but it works!