I deliver spots to only one station as H264 files. All others are getting MPeg2 files. Call the station(s) and ask specifically what they require. Sometimes it takes a few calls to get to the right person with the answers. I’ve found that the first or second call usually doesn’t answer your question. Eventually you will get the person involved with the actual encoding for air and he (she) will have the answers. The Denver stations are all very tight technically. Good people. Just ask until you get your answer. Do a little research on your own about tapeless delivery so you know the right questions to ask in the first place. Also, invest in some good FTP software for your computer. It will save you a lot if time and headaches.
E=MC2+/-2db