Thanks guys. It’s definitely not a codec pack issue but the Nero OEM application is installed. I instlled everything on my laptop which doesn’t have Nero and I have encountered the same issue.
I have double-checked that the output format is correct any number of time but it just doesn’t like it for some reason. I have been scouring the net for answers and have found a few others with the same problem but it’s always a dead end…
Thanks for the input though.