VP19 build 643. I've been going around in circles for the last 2 hours trying to get this DNxHD footage to work on this machine like it works on my other machine. On my other machine, I enabled the legacy Quicktime plugin in depreciated features and Vegas started taking this codec no prob. On this machine, I've installed Quicktime 4 different ways and with an old installer, rebooted, enabled QT in depreciated features ...and it only shows up as audio on the timeline. I tried deleting all of the app data for Vegas 19 and rebuilding it and that didn't work either. Any ideas?