Anyone have a suggestion of how to get a .mov/.mpg file to Betacam tape?

I am using an iMac and need to convert .mov and .mpg files to a betacam tape. I have been requested by a broadcast company that this is the only format they will take.

I am guessing I need some kind of betacam deck to transfer it too as well as software to make that conversion.

Any advice on what I would need to that would be great!

Thanks!