My next try will be with NUKE but I wanted to see if anyone knew a good method that doesn't require 2-4 hours rendertime for 2 minute of footage (I've got hours to convert for a very specific reason on a VFX project).
Two options: Insane render times, or insane cost. You can rent a Terranex and run your tapes through that, or you can use compressor / after effects to remap. If you use Compressor, turn on Frame Controls and turn rate conversion to "Better". You're still going to get high conversion times.
Los Angeles, CA
"We are the facilitators of our own creative evolution." - Bill Hicks
I deal with this everyday at work. I use either compressor to change the frame rate or media encoder. We are always converting 29.97 go pros for import into avid 23.98 projects. Consider those programs.