I think we are chasing our tails here. Im talking about the signal itself internal to the file. I.e broadcast specs. If i give say a tv station a file that may have a few issues I missed as i was grading they will kick it back. Is it always good before the final render to apply a legalizer filter in your NLE if the editor is the last one to touch it? and if you are finishing in Davinci what do you guys tend to do to maintain a double check for legality in the file itself?