Francois,
Good research! That brings me to another issue actually, which could also lead me to a solution if I could solve it. For some reason I can’t ever import a video file output by Route Generator and compressed via RG’s ffmpeg builtin functionality into Vegas, which is one reason why I had always used the bitmaps. Route Generator can output compressed video in about a million different codecs and no matter what I use I get a “An error occurred while opening a codec.” These files always open and play fine with vlc, by the way.
Route Generator also has the ability to export an seemingly uncompressed file via bmp2avi.exe, giving me a 2GB-ish avi file I could in theory pull into Vegas and then render into something more storable, but while the file looks totally fine in Vegas’ preview window the outputted video is super duper washed out. That is, unless I change the project settings to 32bit floating point and disable view transform, then it outputs properly. However I cannot import a higher resolution file this way (“An error occurred while opening a codec.”), so I can’t zoom into the final map without distortion, which is the second reason I was working from the bitmaps.
It’s so complex I’m not even sure what to ask, it feels like there is some sort of encoding going on somewhere along the lines here that Vegas is not dancing with, somewhere a file is being created that has some flag set wrong or something so it’s not being interpreted by Vegas as it should be.